Why does my trailblazer not go over 3000 rpm?

My Trailblazer has no power and will not go over 3000 rpm. I have replaced the spark plug, gas filter, throttle body acceleration pedal sensor and the crank shaft sensor. I am at a loss of where I go from here.

Can a Chevy Trailblazer lose power on OnStar?

vbell, my information came from a news report that stated that OnStar can now reduce engine power to newer OnStar equipped cars. They do not “deactivate” a car, they reduce power to a safe level so the driver cannot speed away. I would pose the question directly to OnStar, not Chevy or GM.

When did the Chevy Trailblazer lose its power?

Just reaching 30k miles and things starting to go out: little things: door switches, squaky and rattling noises. This is last american car for me seriously, the darn Honda Accord I had 10yrs ago was purring like a kitten at 180k miles with 32 mpg.

When did I buy a 2002 Chevy Trailblazer?

We bought a 2002 Trailblazer from AutoRama about 4 months ago, if even that. But about 2 weeks ago I was driving and got lost on the highway and ended up 6 hours later home. But what would normally take me about 20 minutes up the highway from where I finally figured out where I was]

Why is the AC not working on my 2006 Trailblazer?

My 2006 trailblazer has not had functioning heat since I bought it last summer. So far I have verified it has pressure in the system (tried to add an autozone bottle but saw the system was already full). Found a cut wire at the low pressure switch, installed a new pigtail with no change.

Why does my Trailblazer have a reduced power light?

When the engine power has been reduced, the engine and transmission can operate in totally different ways. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. Good luck diagnosing your Trailblazer’s reduced engine power light. If there is anything that you would like to add, please feel free to leave a comment below.

Why is the clutch not kicking on on my Chevy Trailblazer?

Bypassed the low pressure switch with no change. With AC turned on, the clutch on the compressor does not kick on. The fuses all looked good for everything ac related. What should be my next diagnostic steps, jump relay, check power at the compressor plug?

What kind of engine does a Chevrolet TrailBlazer have?

Rather than a V-6 or V-8 engine, the 2002 TrailBlazer held a 270-horsepower, 4.2-liter, all-aluminum inline-six-cylinder. GM claimed it was the strongest engine in its class, ready to go against the V-8s in some other SUVs.

What are the symptoms of a bad throttle / accelerator pedal?

Symptoms of a Bad or Failing Throttle/Accelerator Pedal Position Sensor. $79.99 – $89.99. Average rating from 4,829 customers who received a Check Engine Light is on Inspection. The days of having to constantly adjust the throttle cable due to a loose nut on the carburetor are long gone.

How does the accelerator pedal work in a car?

Today’s modern cars, trucks, and SUVs are all equipped with an electronic throttle control system that contains an accelerator pedal position (APP) sensor. This sensor’s primary job is to monitor the position of the throttle pedal and send an electronic signal to open the throttle body as you depress the gas pedal.

Why does my car not accelerate when I press the gas pedal?

If it seems loose or the engine changes speed without accelerating or decelerating, the clutch is definitely the origin of the problem. 2. Problems With The ECU. An error in the electronic control unit (ECU) could also be the reason for your car won’t accelerate when pressing gas pedal. For example, a pollution error could trick …

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.

Is the accelerator pedal connected to the throttle plate?

The Accelerator Pedal Assembly is not connected to the throttle plate via a cable (like in the good ole’ days). That the Accelerator Pedal Assembly is made up of 3 individual Position Sensors. Each one has separate signal, Ground, and 5.0 volt reference circuits.

What are the symptoms of a bad throttle position sensor?

This is another failure mode of the TPS, which indicates that it is falsely limiting the power being requested with your accelerator pedal foot. You may find that your car will accelerate, but not beyond a speed of 20 – 30 MPH. This symptom often goes hand in hand with loss-of-power behavior.

Are there any problems with the 2004 Chevrolet TrailBlazer?

CarComplaints.com Notes: It would be ill-advised to blaze any trails with the 2004 Trailblazer. Its faulty fuel gauge could leave you stranded. This data is from the NHTSA — the US gov’t agency tasked with vehicle safety.

Why does my Chevy Trailblazer make a knocking noise?

The vehicle was taken to the dealer for diagnostics. The technician advised that the knocking noise was normal for the type of engine in the vehicle. The vehicle was then taken to an independent mechanic who advised the contact that the pistons in the engine were down sized, causing the noise. The vehicle was not repaired.

What causes acceleration in a 97 Chevy Blazer?

97 chevy blazer 4.3 idles great but upon acceleration it starts to surge, changed just about everything, fuel pump,cap rotor, wires, plugs distributor injectors, crankshaft, cam, throttle pos. sensor, tried new computer, at a loss starts right up and idles great, take in down the road and starts surging. Exhaust?

Why is my Chevy Blazer not getting gas?

Pressing the gas pedal does not give it more fuel. Taking the throttle body sensor off makes no difference either. Took it to a mechanic for a “professional” diagnosis – they told me it was the fuel injection system. Put a new one on this weekend, still no dice. Can’t move the truck as it won’t get gas.

Why does my car not accelerate when I press the gas?

If the power-train control module is not detecting the proper signal from the throttle position sensor, the engine may not accelerate properly. I would recommend having your throttle body inspected by a qualified mechanic, such as one from YourMechanic to determine why your car is slow to accelerate.

Why does my Chevy Blazer have no power?

If not that code then your problem is most likely the cheap plastic distributor that GM installed for that year. Take off that expensive cap and see if the shaft jiggles. It is better to remove the distributor to inspect it. AutoZone sells a lifetime warranted Distributor for about $90.

What’s the fuel pressure on a Chevy Blazer?

My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving. Can we have pressure without flow? Initially the code was p0171. Now that we cleared it it hasn’t come back on.

Why does my Chevy Blazer engine bog down when I hit the gas?

Take it to a good local mechanic (not a dealer) and see if this is one problem. My Blazer bogs down when you hit the gas and has trouble starting. We have replaced the MAF sensor, plugs, rotor, cap, plug wires, and fuel filter. The fuel pressure is at 50psi when idling and 64 wot when driving.

When does a 2001 Blazer start to bog down?

I have a 2001 Blazer, last week as I was climbing a hill I attempted to accelerate and heard a “pop” and my engine started to bog down. Over this last week the bogging down has got progressively worse but only happens when you attempt to accelerate.

Why does my Chevy Trailblazer not speed up?

Chevy Trailblazer Won’t Accelerate: RPMS Go Up If your Trailblazer won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue.

What kind of power does a Chevy Trailblazer have?

Thanx so much in advance for any ideas and advice. I own a 2007 Trailblazer…I6 4.2L, much like yours. I have had a similar problem happen twice in my brand new truck. The first time I was driving about 20mph- the truck lost power and dropped to almost 5-10 mph. With in seconds..it had kicked back in and it was fine.

What is the throttle position sensor on a trailblazer?

The throttle position sensor is one of the most vital sensors in your Trailblazer. If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. The TPS data also helps determine when the transmission will shift.

When is a bad throttle position sensor a warning sign?

Engine won’t idle smoothly, idles too slowly, or stalls If you start to experience engine misfires, stalling, or rough idling when the car is stopped, it can also be a warning sign of a failing TPS. You don’t want to wait to get this checked out!

Why does my Trailblazer have a reduced engine power warning?

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

Can a bad throttle position sensor cause idle surging?

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. 3) Check Engine Light

Is there a way to reset the throttle body?

This method is almost foolproof as long as all ECU control parameters are within their normal ranges. Resetting The Throttle Body Calibration (this step is conditional) A Rough Idle or a SES can sometimes be caused by a change in the throttle body position sensor calibration.

Why is the spark chain on my trailblazer not working?

The timing chain (or belt) is responsible for keeping the upper valve train synced with the crankshaft. This is vital for spark timing. If the timing is off a little and the engine still runs, the timing belt may have skipped. If it has jumped too much the Trailblazer may not even fire.

Can a Chevy Trailblazer be deactivated while in motion?

As far as Chevy is concerned they say that OnStar is NOT able to deactivate a vehicle while it is in motion. (even if told to do so by police). Its is considered unsafe.

Why does my 2005 Chevy Trailblazer die at idle?

Clean it thoroughly and then take it on a test drive. Once the idle is re-learned, your problem will be solved. Also the radio control **** to turn channels or volume and on and off won’t work the radio and cd will switch back and forth,, what could could cause this — 2005 trailblazer.

When do I stop at red light RPM drops?

But when i stop at light rpm drop to 500. And feels like its going to shit off. My car has 80455 miles. My car has an automatic transmission. This may be a sign of a failing idle air control valve.

Do you need Spotless throttle bodies on a trailblazer?

The Trailblazer throttle bodies need to be near spotless for it to make a difference. All inside and behind the throttle blade, etc. Yes i removed it and cleaned it spotless, you could eat off it.

Why does my Subaru Impreza stall at stop lights?

Usually at stop lights or when i would let off the gas and the car would try to find an idle. When it did idle, it idled low and was unstable often dipping to just a couple hundred RPM. I took the advice of Zecher here and cleaned out the TB.

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.

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 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.

What causes hesitation and surging on Blazer 4.3L?

Fix Hesitation and surging on Blazer 4.3L 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.

When did my Trailblazer start having erratic gauge readings?

My 2004 Trailblazer, with only 29 K miles, started having erratic gauge readings (Volts and Temperature) last winter (2010-2011), right after snow had been piled up on the hood for a couple of days (I live a little south of Detroit, so this happens frequently), and I was really puzzled by this problem.

This sensor sends a reference voltage to your power-train control module, which uses that to determine ignition timing and fuel trims. If the power-train control module is not detecting the proper signal from the throttle position sensor, the engine may not accelerate properly.

Why is my throttle position sensor not working?

The reason this happens is that the ECM doesn’t get correct information from the TPS as to how much to throttle the car. 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.

What was the problem with my TrailBlazer LT 4.2 L?

We’ve owned this TB for roughly 4 years now and never had any real problems with it other than a bad ignition coil and a failed secondary air injection pump and water pump. Three days ago, my wife drove it to work just fine but it would not crank over when she went to leave.

What happens when a Chevy Trailblazer loses power?

The first time I was driving about 20mph- the truck lost power and dropped to almost 5-10 mph. With in seconds..it had kicked back in and it was fine. I have Onstar so I called them and had them do an emergency diagnostic- found nothing wrong.

What to do if your Trailblazer won’t start?

Boosting/jumping the battery no longer helps. I can jump and start the truck by jumping across sockets 87 and 30 of the starter relay sockets and the truck will run. I checked the ground from socket 85 to vehicle chasis and the resistance is zero. Now I am leaning towards the neutral safety switch or the wire to and through it as being the culprit.

Why is the shift button not working on my TrailBlazer LT?

The shift button on the shifter could not be depressed with key in run and foot on brake pedal and the shifter could not be moved out of the park position.

Why is the grounding cable on my trailblazer not working?

The Grounding Cable is one of the few things the engineers cannot dispense with from being made of Pure Copper Wire… subject to flex work hardening and, as the cable (s) bounce and move out of sync with the dynamic vibrations and motions of the Engine riding on top of the motor mounts.

How tall is a 2003 Chevrolet TrailBlazer EXT?

The seven-occupant TrailBlazer EXT is 207.8 inches long overall on a 129-inch wheelbase. The EXT stands 3.6 inches taller than the regular TrailBlazer. Ground clearance totals 8 inches.

How big is the turning circle on a Chevy Trailblazer?

GM further claimed that torsional rigidity with the inline engine increased by 260 percent and the rack-and-pinion steering system delivers a tight 36.4-foot turning circle. The TrailBlazer debuted in five-passenger form.

Is the 2003 Chevrolet TrailBlazer in good condition?

Check back with us soon. Showing 3 of 1,897 reviews. Very good body b. No rust no dents Has not been in Easy to drive. Weather tec floor mats. Interior very good condition and non smoker It’s a great first car for someone who needs to get around, and very comfy.

How often do I need to repair my 2002 Chevrolet TrailBlazer?

Repairs now, each year, 600-800. Normal for wear and tear and ahem, my abuse. Cat converter, motor mounts, brake vac booster and such. Well worth it to avoid a car payment! Now can we talk about wifes ’13 Honda CRV.

What causes car RPMs to go up but not down?

There might be a leaking vacuum hose in the car, hoses deliver air and fuel to the combustion chamber. If it is leaking, the air will mix with the gas causing the RPMs to go higher than it should be. Another thing to look out for is a clogged air filter if the air is having difficulties entering the combustion chamber.

Why does my car not accelerate uphill?

We also showed you the main reason why car won’t accelerate past 40 and also why car wont accelerate past 20 and finally, we discussed the reason your car wont accelerate uphill. So if your car won’t accelerate but RPMs go up automatic then you know why that is so.

Why does my car not accelerate past 40 mph?

If your accelerating won’t go past 40 mph, then there might be a problem with your exhaust pipe. It might be blocked; you will need to take it to the mechanic.

How to change the accelerator pedal release position?

Accelerator Pedal Release Position Learning Procedure. Make sure that the accelerator pedal is fully released. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds. Turn ignition switch “ON” and wait at least 2 seconds. Turn ignition switch “OFF” wait at least 10 seconds.

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.

What happens if you have a bad accelerator pedal?

However, when a problem with the APP sensor exists, the vehicle’s ability to consistently accelerate or decelerate as directed by the driver is reduced. This could cause a serious safety hazard, as the driver is not able control the speed or acceleration of the vehicle.

Why does my car run when I release the gas pedal?

It would sometimes run normally if I release the gas pedal and press it again. What could be the problem? Thank you. It sounds like you may have an issue with your throttle position sensor. This sensor sends a reference voltage to your power-train control module, which uses that to determine ignition timing and fuel trims.

Why does my trailblazer not go over 3000 rpm?