What causes a GM truck to lose power?

If your GM truck occasionally loses the ability to accelerate and warns you of reduced engine power, that could be caused by a faulty throttle body. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in a while to several times in a day.

Why does my car lose power going uphill?

Reasons Your Car Loses Power Going Uphill 1) Bad Fuel Filter. You can’t have a good working engine without fresh pure gasoline flowing into it at all times. If you don’t have a good fuel filter to prevent the impurities of the fuel from flowing into the engine, then it could ultimately jeopardize the performance of your engine.

Why is my GM Truck bogging down on hard acceleration?

If your not using delco plugs in this motor that can be a big contributor to your problem. GM vortec engines hate anything but vortec plugs and will do all kinds of weird things. And yes a clogged converter could cause this sort of thing to happen. Are the O2 codes upstream or downstream?

What to do if your Chevy Silverado loses power?

While generally the Chevy Silverado is a premium, reliable truck, there are times when even the best vehicles can end up having problems. If you’ve ever had your Chevy Silverado or GMC Sierra suddenly lose power, you may be wondering exactly what is going on with your truck.

Who is the owner of the GMC Sonoma?

GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Emblem and the name SONOMA are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed. We reserve the right to make changes in the product after that time without further notice.

What makes the engine sputter at 3000 rpm?

The fuel cuts out and starts to sputter at 2000 rpm all the way to 3000 rpm. I have changed plugs, MAP, TPS, IAT, crank sensors, wires, cool pack, cool mod, fuel pressure, fuel pump, crank, timing gears and chain ECM/ECU. Checked grounds, injectors, head gasket. I check compression it is 180 across the board.

What are the symptoms of a bad ECM power relay?

A bad relay may cause the vehicle to crank, but not start, or sometimes not even crank at all. 3. Battery drain or dead battery. A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off.

What happens if the ECM fails on a car?

The fuel and ignition systems, as well as several other engine management functions, of many vehicles are controlled by the ECM. If the ECM or it’s relay fail, the entire engine management system will be left without power and will not function as a result.

What’s the problem with my Chevy Silverado 1500?

When it decides to act right, all is will. Anyone else found a solution? Chevy silverado 1500 2004. The same problem, random intermittent starting. I had had this problem before about 5 times and each time I disconnected and reconnected the negative battery cable it started fine. This time that didn’t work.

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

Is there low end power on a C / K 1500?

No low end power untill I hit about 35mph then my engine seemed to wake up and scoot. 1998 C1500 5.0 A friend had the same problem and recommended changing the fuel injectors or spider as they call in on Chevy engines. I did, and the change was amazing. Try that, it’s not cheap but def worth it. Make sure you upgrade to an MFI unit.

Why does my GMC Sierra 1500 run rough at idle?

The spray smoothing out the rough rpm is an indication of the engine running lean, could be low fuel pressure, could be a vacuum leak. With it running rough at an idle and smoothing out at a higher rpm is a general sign of a vacuum leak.

Why does my Chevy Silverado lose engine power?

Keep reading to find at least one possible answer to “Why is my Chevy Silverado losing power?” Read More: How Can You Tell If Your Pickup Is Overloaded? If your GM truck occasionally loses the ability to accelerate and warns you of reduced engine power, that could be caused by a faulty throttle body.

What’s the problem with my 1997 Chevy Silverado?

I have a 1997 chevy 1500 siverado with a 5.7 vortec that has been having a problem for about 6 months now. The truck starts, idles, and revs normally and when accellarating slowly everything works just fine, but once you get past half throttle it falls on its face and acts like it has a clogged fuel filter or bad fuel pump.

Why is my Chevy Suburban bogging down on hard acceleration?

I have a 97 Suburban 5.7, 2wd. On hard acceleration it is bogging down like there is to much air, because sometimes it backfires. Or a plugged exhaust. I replaced the fuel pump-because it was bad in July.

Why is the TPS on my Chevy Silverado 1500 not working?

The throttle position sensor (TPS) on the Chevrolet Silverado 1500 is notorious for failure which causes: This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.

Why does my passenger side power window not go down?

Passenger Side Power Window: Electrical Problem V8 Two Wheel Drive… Passenger side window will not go down. I took the motor out of the door and jumped it off of a battery and it worked in both diections just fine. I plugged it back up and it will go up from the switch on the driver side and the passenger side, but would not go down.

Why are my Silverado windows not going down?

I purchased a 1991 Silverado for my son and the windows worked fine for a month and then they started to stop and go at times. I replaced the switches and checked the relay and all were fine. I then took the panel apart and it looks like the previous owner made speaker holes in them and damaged some of the wires in the process.

Why does my smallblock Chevy have no power?

If it doesn’t, and you find no other issues such as fuel starvation or exhaust restrictions, your camshaft could be excessively worn. Many older, higher mileage smallblock Chevys develop flattened cam lobes over time, resulting in lack of power and, sometimes, backfiring and the like. Lack of power is the most common symptom of flattened cam lobes.

Why does my C / K 1500 have no power?

I have a ’97 k1500 with a 350 and 4l60e automatic. Assuming all things are OK with the truck, would a bad fuel pressure regulator cause it to have no power at low rpm’s?

What are the codes for GMC check engine lights?

P1245Intake Plenum Switchover Valve P1250Early Fuel Evaporation Heater Circuit P1257Supercharger System Overboost P1258Engine Coolant Overtemperature – Protection Mode Active P1260Last Test Failed SCC Or Theft Detected, Vehicle Immobilized

How to troubleshoot a GM 4.8L 5.3L?

You can find this tutorial in Spanish here: Cómo Diagnosticar y Resolver Una Falla en Cilindro (GM 4.8L, 5.3L, 6.0L) (at: autotecnico-online.com ). The core symptom of a misfire is rough idle. This isn’t the only symptom that your GM van, pickup or SUV might experience… here are some more that you might see:

Is there a cure for limp mode on a GMC?

This feature is not available right now. Please try again later. GM and GMC vehicles have been plagued by throttle position sensor problems along with the dreaded reduced engine power or limp mode. Here, we show you the cure. T.S.B. https://www.autocodes.com/uploads/gmc… Loading…

Why does my Duramax say reduced engine power?

If you’ve got a Duramax diesel, the Reduced Engine Power warning could Illuminate for a variety of reasons. There are many different technical service bulletins (TSBs) for Duramax-powered vehicles that mention Engine Reduced Power mode.

Why does my GM car have a reduced engine power warning?

Some GM vehicles will enter Reduced Engine Power Mode when the engine begins to overheat due to cooling system issues. The PCM triggers the mode to protect the engine from further damage. In some instances, the Reduced Engine Power warning may illuminate to inform the driver that the vehicle lacks power due to an underlying condition.

What does high RPMs but won’t pick up speed mean?

It doesn’t sound like clutch slipping, if that was the case the rpms would skyrocket while your speed stayed the same. It sounds to me like your vehicle is in limp mode. If that was the case it would be throwing some sort of codes for sure and I’m guessing you would have a warning light.

Why is my car losing power at low speeds?

If the pressure is low the fuel injectors will not be able to spray the correct amount of fuel into the combustion chamber and that will result in a loss of power. A faulty fuel pump will not pose problems at low speeds but when you are looking for quick acceleration you might be left wanting.

What does it mean when GM says reduced engine power?

In some instances, the PCM may actually cut off fuel delivery to the engine, rendering the vehicle undrivable. When this happens, GM’s Engine Reduced Power Mode is being implemented as a “fail-safe” mode (also known as a “limp” mode).

What happens when you turn off the diesel engine?

That type of engine runs on electrical spark of 12 volt power supplied from your car’s battery. When you turn your key off, electrical power is interrupted and the engine quits immediately. Since a diesel engine does not run on electric spark, the engine has to be shut off by some other means.

What does it mean when your engine loses power?

While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in a while to several times in a day. When given a digital diagnostic, the vehicle scan will tell you there is an issue with the throttle body. This is a sign that your truck’s throttle body should be replaced.

Why does my GMC diesel engine not work?

American diesel fuel is thinner than its European counterpart, allowing for air pockets that cause the metal to rub against metal and create shavings. “The pump secretly deposits metal shavings and debris throughout the fuel injection system and the engine until it suddenly and catastrophically fails without warning,” the lawsuit alleges.

Are there any problems with a 7.3 liter diesel engine?

The legendary 7.3 Power Stroke Diesel engine, when properly maintained can provide years of trouble free service. However there are several common problems that can develop over time. Generally speaking these can all be resolved relatively easily. Listed below are 9 common problems of the 7.3 Liter Power Stroke Diesel engine.

Why does my Silverado Sierra jerk at high speeds?

If you hammer it down, the truck smooths out. It appears to only happen durring light acceleration and at higher speeds. The best I can do to explain the jerking is that it feels as if is missing or being starved for fuel and about to run out. There are no check engine lights on in the truck.

Why is my Chevy 4.3 engine still running?

Checking your vehicle’s fluid levels is always a good idea to maintain the overall longevity of the engine. Once you have ruled out all the basics, you can go back to what the Chevy 4.3 engine is known for: bad idle air control valves and throttle control switches.

Why is my Blazer 4.3L driving like a dog?

If you have Hesitation and surging on Blazer 4.3L and it’s driving like a dog—poor acceleration, hesitation, or a surge and you suspect a fuel problem, you may be partially right. But before you start replacing really expensive components like the fuel pump, try this: Disconnect the electrical connector to the MAF sensor and take it for a drive.

What causes a car to lose power on a hill?

If the fuel pump is on its way out, it may work intermittently or not at all. A symptom of starving the car for fuel is a car that runs correctly at idle and low load, but falls flat on its face as you ask for more power (when climbing a hill, for instance). Fuel pumps may fail due to age, sediment buildup, or running the incorrect fuel.

Why does my car not have any power?

There are a few possible causes to missing power from an engine and here are a few things to ponder: Your engine may have old gas in the tank. Fuel in the last couple of years now has up to 10% ethanol.

Why do I lose power on hills GMC Sierra 1500?

2000 gmc sierra 4.3 shows lean feul but can not find how or where to look 4 people found this helpful. my 2000 sierra starts good and ideals good the only thing that shows up on the scanner is the fuel is lean everything else shows good pls help 3 people found this helpful. Bad spark control module people…….that’s the problem….

When do I feel like my car is losing power?

You will notice this especially when you go on a long road trip or use a city car on open roads. If you are overtaking while going uphill and have the air conditioning on, you will notice how the engine can feel like it is losing power. There is no need to worry.

Can a stalling engine be intermittent driveability?

Intermittent driveability problems of any kind are always a challenge to diagnose. When a customer brings you a vehicle and complains of a stalling problem, you may not have much to go on other than their description of what’s happening and when it happens.

What does it mean when your car is losing power?

For the sentimental, it feels like a trusty horse or boon companion is knocking at death’s door; for everyone else, it produces a pang in the pocketbook — at least until it’s diagnosed. That’s the thing about power loss: It could point to some minor, easily fixed issue, or it could stem from a real whopper of a problem.

Why does my Dodge Ram 1500 lose power?

Sputtering loss of power is one of the common issues associated with the Dodge Ram 1500; This problem has caused a lot of cash spending, a thing of concern for its users. In this article, we would be unveiling a lot of things about the Sputtering loss power issue of Dodge Ram 1500.

Why does my car lose power when I put my foot on the gas?

The ignition system has ignition coils which convert 12 volts of power from your battery into the 20,000 volts of power needed to ignite the engine. If you were to have a bad ignition coil, then the mixture of fuel and air inside the engine would not be ignited adequately. This means you would lose power as you put your foot on the gas pedal.

Why does my car lose power when I put the pedal to the metal?

If your car loses power when you put the pedal to the metal, odds are good that a fuel system malfunction is preventing your engine from drawing the extra go-juice it needs to accelerate. You could be looking at a clogged injector, leaking fuel line, gummed-up filter or kaput fuel pump [source: Salem ].

Why is my van battery constantly Diying?

Battery died with the van off and the radio on for more than 5 minutes. Literally jumped it all the time. I replaced the battery, battery didn’t work. Found out it wasn’t charged when I bought it (as a lot of places don’t pre-charge them now) so I charged it and it worked fine.

Why is my car losing so much power?

If you are losing power, bad spark plugs could be a problem in some rare scenarios. Mostly you will notice worn spark plugs when your car is misfiring. If your car engine doesn’t sound like usual, there is a chance that a spark plug is worn out and the car is running on one cylinder less than usual.

When does the Dodge Caravan lose its power?

(Did not replace it yet). Drove fine in the morning 50-70 mph. Cant figure out it it happen while was driving or after morning trip but car does not accelerate over 40 mph. It might go higher but I’m afraid to fry my engine. When I drive 40 mph RPM is at least 3,100.

What makes a 2002 Dodge Cravan stop running?

2002 Dodge Cravan quit running at hwy speed. All instrument lights are working. No service engine light is on. When you turn the key, instrument lights go out and there is a faint click at the fusebox. the battery is charged and the terminals are clean. Wiring at fuse box and computer checked. Fusebox and computer replaced with working ones.

Why did my Dodge Caliber lose power while driving?

This car was towed home with no throttle response where a machanic first tried a new accelerator pedal since it was a known issue and cost was about $120, this did not resolve the issue. He then went for the more expensive second half of the possible issue of a new throttle body which cost about $600, this fixed the car.

What do I do when my generator gives me a RMP sense loss error?

What do I do when my generator gives me a RMP sense loss error? If the unit was running and shuts down, attempting to restart, clear the alarm by pressing the ENTER button twice, then press AUTO. Next, remove some of the loads. Try putting it back in AUTO and then restart.

What are the symptoms of a damaged fuel pump driver?

Symptoms of the damaged fuel pump driver module are as follows: 1 Hard starting or no start 2 Lack of power 3 Code P1233 Fuel Pump Driver Module (FDM) Offline

What happens when you lose power in your car?

You’ll be driving down the road, your lights will dim, and you’ll lose power and die. If the problem is with your battery, then you’ll generally only have trouble starting your car since that’s the battery’s main function.

Is there a truck driver shortage in Texas?

Dallas intermodal ramp flows recover after paralyzing winter storm 26 May 2021 After a rough six-week period following the paralyzing February snowstorm in Texas, intermodal terminals are operating with fewer delays in Dallas-Fort Worth, with chassis available and driver productivity bucking national trends.

What is the FPS of a 60 mph vehicle?

If the initial velocity is 60 mph, 88 fps, after 1 second elapsed, the vehicle velocity would be 73 fps, after 2 seconds it would be 58 fps decreasing progressively thereafter.

What is a driver policy and safety manual?

DRIVER POLICY AND SAFETY MANUAL INTRODUCTION This manual is designed to provide drivers, employees, and all other concerned parties with information regarding the operational policies, safety policies and general practices of this company. A wide scope of information is provided herein.

What is the stopping distance at 60 mph?

Virtually all current production vehicles’ published road braking performance tests indicate stopping distances from 60 mph that are typically 120 to 140 feet, slightly less than half of the projected safety distances.

Why does my car keep losing power while driving?

If the weather is cool and the engine is overheating, this points to a more serious problem. Always keep an eye on the engine temperature, as running with a hot engine is likely to cause serious permanent damage to a car.

What happens when you have reduced engine power?

Depending on the vehicle, this reduced power backup system could shut down accessory components, limit your speed, and sometimes completely immobilize your vehicle. In most cases, your vehicle will give you just enough power to get to a shop or back home in case you happen to be driving somewhere and a problem arises unexpectedly.

What should I do if my Ford truck is losing power?

Depending on whether your truck is gas or diesel, the procedures vary slightly. The truck’s on board ECU (computer) can tell you what problems are being recorded, especially if they are related to emissions or misfires. Use an OBD scanner to scan the codes. Alternatively, some auto supply stores scan vehicle codes for free. Figure 1.

What causes a car to have no power when accelerating?

3. Defective Fuel Pump. If the car has no power when accelerating, it means there is some defect in the fuel pump. A fuel pump supplies fuel in the gas tank for the engine for combustion. Further, it also accommodates the engine’s need by regulating the pressure for the fuel.

When does a car lose power while driving?

Here’s one of the most expression you often encountered in car loses power while driving situation. You often encounter this situation when suddenly running at an unusually high speed. The soot in the combustion chamber fell into the mouth of the valve so it could not be closed, the machine died suddenly.

What to do when your car is losing power?

If your car is chugging and losing power, consider a fuel injector cleaning or replacement. As mentioned earlier, there are many potential causes of your car chugging and losing power. Here are some other things to check or consider when diagnosing your engine’s power loss and sputtering issues. Failing fuel pump. Timing belt or chain problems.

What does it mean when your car says reduced power?

In most cases, the Engine Power Reduced warning indicates that your car’s performance has been intentionally limited. “Reduced Engine Power” Message Your car’s primary computer, often known as the powertrain control module (PCM), triggers Reduced Power Mode when it detects a system failure.

What causes a loss of power in an engine?

A weak or failed ignition coil is another potential source of a loss of engine power. Ford Modular engines are well known to have issues with the coil on plug systems. Coils get weak with age and misfire under load.

What to do if your truck has no power?

Truck has no power and bogges down down when given throttle. I have changed the plugs, distributor cap and rotor. Still did not fix the problem. Replaced the throttle position sensor and thought I found the problem but still bogges down.

What causes a car to have a stumbling issue?

In some cases, the connections on the fuel filter may be loose, causing fuel to leak from the fuel lines or the fuel filter. This can cause engine stumbling issues. If you notice this problem, replace the fuel filter with a new one and retighten the fittings. Verify the leak has gone and inspect the vehicle for stumbling issues.

Why does my GMC truck not shut off?

OK, new ignition sw & harness installed, alarm system disabled. It puts all kind of codes in it. It’s been at the shop for almost 6 days and the tech’s have been working on it. It is a RAMDOM problem, don’t do it all of the time. Any more ideas? Any help will be appreciated. Thanks.

Why does my Vortec engine not start at all?

11 people found this helpful. check your fuel pressure. The vortec engines are known to have the fuel pressure regulator fail and leak into the intake. At the worst of it the vehicle cant start at all, it will flood a couple cylinders and not feed fuel to the rest. This can be checked for by checking fuel pressure and leakdown rate.

Can a Chevy Truck turn over but not start?

I replaced the starter, have checked the battery and even jump acrossed the starter, which did make it turn over but not start, but I cannot get the truck to turn over with the ignition switch. Is there any way to test the switch? When I turn it to the on position everything seems to work. When I try to start it nothing works.

Why does my Chevy Silverado not turn over?

Have a 99 Chevrolet 4×4 Silverado with 5.0 it was hot wired by previous owner. It did crank but replaced the steering wheel column with new wires and now it will turn over but won’t start. The fuel pump is connected directly to the battery.

Why is my GM 5.3 engine not working?

There are other issues caused by the active fuel management system which uses an oil pressure relief valve to spray oil directly on the piston skirts. Unfortunately, this oil can overload the piston rings, allegedly. The excess oil allegedly accumulates on the combustion chamber, leading to carbon buildup.

Can a GM 5.3 engine be sued for?

The vehicles involved in the civil actions are primarily those which contain the GM 5.3 engine. Vehicles covered in these suits include the following: If you own any of the models listed above, you may be eligible to join a GM 5.3 engine lawsuit. However, you may not qualify if your vehicle has already been adequately repaired.

What happens if the engine ground is bad?

The engine ground provides an electrical return path for the starter motor. A bad engine ground is a common problem leading to hard-starting and no-starting conditions. The following test takes a voltage drop reading to locate unwanted resistance in the engine ground path.

Why does my Silverado go slower past half Trottle?

The truck starts, idles, and revs normally and when accellarating slowly everything works just fine, but once you get past half throttle it falls on its face and acts like it has a clogged fuel filter or bad fuel pump. It actually goes slower than below half throttle. The bogging gets consistently worse the more throttle you give it.

Why does my GMC Sierra 1500 stall while in gear?

Motor wants to stall while in gear (but doesn’t do it out of gear once over 1000 rpm it dosent) seem to stall and it is only from a dead stop. Fuel filter has been replaced and TBI was rebuilt last April but it sort of used to do something like this when it was like 40 degrees or below. Could be torque converter lockup solenoid in the trans.

Why does my Silverado 1500 not go into gear?

Won’t go into gear. No I haven’t where is the brake switch put it in neutral and reverse. It was in the way so I used another truck to push it out of the way. The back wheel drug like something was holding it … read more I have a 2008 Chevy Silverado 1500. The issue is the truck I have a 2008 Chevy Silverado 1500.

Why does my GMC S15 Jimmy not move?

My neighbor owns a ’93 GMC S15 Jimmy 4×4. When he puts it in gear, the truck doesn’t want to move. Then he switched it to 4×4 and it still doesn’t move. I’d imagine that it could be the transmission, … read more

What kind of truck won’t go into gear?

I HAVE AN 86 CHEVY C20 P-UP THAT WON’T GO INTO GEAR WHEN RUNNING (MANUAL TRANS.). I JUST CHANGED THE SLAVE CYLINDER, AND I KNOW THAT THE CLUTCH ISN’T THAT OLD. ANY IDEAS……….? … read more My neighbor owns a ’93 GMC S15 Jimmy 4×4. When he puts it in gear, the truck doesn’t want to move.

Why is my GMC Sierra 1500 stalling and dying?

There is no code given. Have changed the injectors, timing, fuel tank, fuel pump, fuel pump, map sensor, cooling temp sensor on front of block, rebuilt the tbi, air idea valve. None of this hasite helped. The truck starts and dies. Have to give a little gas to keep running. While driving have to 2 foot it so it won’t die.

What happens when the accelerator pedal goes bad?

When the Accelerator Pedal Position (APP) Sensor 1 goes bad, you’re gonna’ see the following symptoms: Check engine light will be lit on your instrument cluster. P0121: Accelerator Pedal Position (APP) Sensor 1 Circuit Performance. P1125: Accelerator Pedal Position (APP) System.

How is the gas pedal connected to the engine control unit?

Connected to the gas pedal, it is responsible for making sure that there is enough air entering your engine to meeting driving and accelerating demands. It works together with the Engine Control Unit to balance the right mix of air and fuel in your engine for the best power and performance.

How to test the GM accelerator pedal position?

The Fluke 115 digital multimeter has a bar graph… to see it, check out this article: Abe’s Multimeter Recommendation. You can use an analog multimeter too. Generic scan tool. As I mentioned above, you don’t need to use a generic scan tool to take advantage of the test info in this tutorial, but it does come in handy to read any trouble codes.

What causes no acceleration when pressing the gas pedal?

This may be a result of low transmission fluid or potentially a faulty transmission control module. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. The transmission control module has various sensors such… Hi there.

What are the symptoms of a bad accelerator pedal?

Symptoms of a Bad or Failing Throttle/Accelerator Pedal Position Sensor. Common signs of a faulty pedal position sensor include inconsistent engine response, reduced fuel efficiency, and the Check Engine Light coming on. The days of having to constantly adjust the throttle cable due to a loose nut on the carburetor are long gone.

What causes a Chevy 2500HD to lose power under load?

Probably P0087. Check the fuel hoses at the side of the trans– they can get kinked, weak and collapse. I’ve just experienced a very similar situation with my 2005 2500HD. After driving about 2 hours, over varying terrain, I had to stop at a light (not the first on the trip).

What to do when you lose power under load?

01 LB7, only non stock is air intake.I was pulling an average size boat when I got a check engine light and lost power. I could ease it up to 50 mph but if I pushed it then back down to no power. Pulled into a parts store,changed fuel filter and they analyzed it.

What to do if you lose power under load?

Going up hill fine, loses power check engine light on. Stop for a while light off next big hill same thing. I thought I had it, the air filter was plugged and actually collapsed. Replaced that next time out with the trailer same thing….. Fuel filter?

What makes a GM 4.8l engine misfire?

Now that we’re aware of the core essentials that each engine cylinder needs to run at a 100% power output.. in the next sections I’ll explore some of the specific components that fail and cause a misfire and misfire codes.

Why does my GMC Sierra have a reduced engine power warning?

Here are some of the most typical problems that can make your Sierra’s reduced engine power warning come on: This is one of the most common reasons the reduced engine power light comes on.

What does it mean when your engine is losing power without warning?

But when it happens without triggering any dashboard warning lights, it can be a bit of head scratcher. Luckily, if your engine is losing power without triggering warning lights, that suggests it’s probably 1 of 4 potential issues. What’s more, all of these issues can be tackled at home saving expensive trips to the mechanic.

Why does my car idle but no power?

Installed new fuel pump and it ran great for 2 months then it just lost power during ride home from work. Replaced fuel pump again with no results. Replaced both ignition coil packs and fuel filter, still no results. TPS is working fine. Not sure about fuel pressure regulator-and there is no port to check fuel pressure.

What causes idle surges on a car ECM?

Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

What kind of engine does a 1995 Sonoma have?

I’ve got a 1995 Sonoma with the 2.2 and it suddenly quit while I was driving on the interstate at about 70 mph. I got it home via AAA and found I had plenty of fuel pump pressure as well as spark.

Why does my GMC S15 die at high idle?

Recently my truck has began to die when coming back down to idle. In looking at the fuel injection, I can see the injectors stop injecting fuel. After it dies, it is very hard to restart unless it is left alone and cools a bit. If the IAC is unplugged, the engine will run at high idle fine.

What kind of acceleration does a GMC Sierra have?

Alright I’m going to do the best I can to try and describe what is going on. I have a 2005 GMC Sierra with the 5.3L H.O. 139K. The truck starts and idles without an issue. Durring light acceleration and at low speeds (city driving 35 mph or so) the truck seeems to run fine.

What should the temp be in a tow truck?

However, when I tow an 8000lb 5th wheel on 100F days at 60MPH up 6% grades, mine goes to 240F, the fan comes (around 225 but it takes a several seconds to have an affect) and then the temps drop like a rock to 190-195, the fan goes off and it starts all over again.

What’s the best rpm range for a tow vehicle?

But unless you have a diesel or a Ford 3.5 Ecoboost it’s usually up around 35-4000rpms. It’s best to have a gas tow vehicle not lugging, so running out of OD is okay. My 2010 F150 has no way to turn the OD off, just a tow/haul mode.

When did GMC Duramax lose power under load?

In 2012 there was a P1093 code and the dealer invoice states “…low rail pressure during enrichment. Command high fuel rail pressure, pressure drops. Follow diagnostic chart, test system pressure, relief valve failed” so they replaced the FPRV.

Why does my GM Truck shut down while driving?

At a dead stop. It would crank over, but not start. Ran the battery dead trying to crank it. My dad came to help, charged the battery, and it started right up. It sounds wierd but this is what its doing.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

Why does my Chevy Suburban die while driving?

This “behavior” has happened just after it is started, it happens after it’s been running for 20 + minutes without any prior problem, there is no rhyme or reason to it. I can start it and it will run in the driveway for 30 minutes with no problems or I can start it on another day and it wont stay running! It isn’t the fuel pump, or the battery.

What was the name of the truck that just died?

The truck continued down the road like nothing had happened. The truck did the same thing about 3 miles after the first time the truck died. There were no more incidents during that trip. Later that same day I was pulling into kroger parking lot turning into a parking spot at about 5 mph when the truck completely shut down again.

What causes a GM truck to lose power?