What causes a Chevy Silverado 1500 to hard start?

As it warms up the idle air control adjusts to this vacuum leak and when the key is off the idle air control resets itself causing a hard start up due to the vacuum leak not being compensated for. Just a possibility 16 people found this helpful. K6, see what I mean by listen to John?

Why does my Silverado turn off the fuel pump?

So, my suspicions about the fuel pump were wrong! The found a stored P1626 code, which means there was a communication problem between the Theft Deterrent Module and the PCM. When it doesn’t receive the right password, it disables the fuel pump.

When does a Chevy Silverado pickup start cold?

MY SILVERADO PICKUP STARTS GREAT WHEN COLD BUT WILL NOT START WITH OUT CRANKING FOR PROBABLY AROUND 6 SECONDS. SOMETIMES MORE AND SOMETIMES LESS. IT WILL START BACK UP EASILY RIGHT AFTER YOU SHUT IT OFF BUT ABOUT 5 MINUTES LATER IT WILL NOT START VERY WELL. MY CRUISE QUIT ALSO, DON’T KNOW IF IT HAS ANYTHING TO DO WITH IT.

Are there any problems with the 5.3 liter Chevy engine?

The 5.3 engine not only can succumb to engine sludge, but to faulty sensors. While this is a very common problem with this type of engine, it can be frustrating nonetheless. There are some quality oil sensors that will increase the performance.

What causes a 5.3 liter engine to misfire?

Noise and misfire seem to be very commonplace for this 5.3-liter engine. These misfires happen as a result of various kinds of Active Fuel Management Lifter. Active fuel management which is a general feature in various engines, can provide some serious issues.

What causes a car to have a hard start?

As mentioned previously on this site, some people have experienced where only 5 to 10 PSI low caused starting problems on higher pressure systems. But this problem clears when the vehicle has been run, so that makes that kind of thing less probable.

What’s the best time to start a Chevy Silverado?

How long does it take to fire a hard start Chevy?

Good Morning island auto, well your mention of that kind of pressure does sound a bit high, but the gauge you are using may have an error, generally even if the fuel did drain back to the tank it only takes a few seconds to be replenished and even if the system contains air, I would expect some firing to happen initially.

Are there any problems with the Chevy 4.3 Vortec engine?

The 4.3 Vortec engines made from 1996-2002 (L35 and LF6) have been reported to have engine knock problems. In a properly functioning engine, fuel burns in even pockets instead of all at once. The pockets burn in even timing, in sync with engine cycles. Engine knock occurs when the fuel burns unevenly and out of sync with the engine cycles.

What causes hard shift condition in Chevy Silverado?

The video shows the replacement of the 1-2 shift accumulator after the pin is worn allowing pressure blow by of transmission fluid, causing hard shift condition that does not really get worse over time. Loading…

What kind of engine does chewy silver ADO 1500 have?

I just recently bought a 2001 chewy silver ado 1500 with a 4.3L V6 Vortex engine with a 4 speed automatic transmission. I am wondering if my truck has a problem or not.

What kind of V8 does a Chevy Silverado have?

My Silverado has the 5.3L V8, so I don’t have any insight to offer, but you are more likely to get responses on the heavily tracked topic, “Chevy Silverado – Continued XVIII”. auto. I don’t have this problem. Is your truck a regular cab with the 3.08 rearend? I would check it out. Also try to test drive another truck problem.

What causes a Chevy Silverado engine to surge?

My 1999 silverado with the 5.3 engine. the motor will occasionally surge at crusing speeds between 40 and 60 mph. I figured out how to induce it by letting off the gas and quickly giving it 1/4 throttle and about half the time this will cause the engine to surge.

What should I do about my Chevy 5.3 liter engine?

CFMtech, Extreme EFI, and Megasquirt have all came to the conclusion that a new properly oiled filter works very well. After on average 1500K miles ‘highway’ time (not offroad) the filter plugs and needs to be serviced (cleaned and oiled).

What kind of engine does a Chevy Silverado 1500 have?

5.3L EcoTec3 V8 (L84) EQUIPPED WITH DYNAMIC FUEL MANAGEMENT 1 355 horsepower and 383 lb.-ft. of torque 2 8-speed automatic transmission (10-speed automatic transmission included on LT Trail Boss and High Country 4×4) 3 Auto stop/start technology 4 Standard on LT Trail Boss, LTZ and High Country; available on LT and RST

What does cold start knock sound like on Chevy Silverado?

Be aware that the radiator cooling fans may operate at any time. Cold start knock is generically called “piston slap,” which is common in Vortec engines. For the first 30 to 60 seconds after a cold start, the short-skirted pistons rock inside the cylinders and slap against the cylinder walls, sounding rather like a diesel engine.

Are there any problems with the Chevy 4.8L Vortec?

The two engines tend to have similar problems, but the 4.8 Vortec comes in at a higher reliability rating on our scale due to its lack of AFM, which is known to cause problems on just about every engine it touches. 1. Intake Knock Sensor – 4.8L Vortec

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 the Chevy Silverado 1500 a good truck?

The Chevrolet Silverado 1500 represents the status quo for a full-size light-duty truck. Its acceleration and braking performance are pretty average, while comfort and interior appointments are nothing special — at least not special enough to attract new buyers who currently own competing trucks.

Depending on cab selection, the three available bed sizes are an 8-foot-long bed, a 6.5-foot bed and a shorter 5-foot-8-inch bed. The base WT is powered by a 4.3-liter V6 engine (285 horsepower, 305 lb-ft of torque) matched to a six-speed automatic transmission.

What kind of acceleration does a Chevy Silverado have?

We tested a Silverado crew cab (High Country trim) with the 5.3-liter V8, 4WD and eight-speed automatic. Acceleration and braking are average but totally sufficient for daily driving or towing. Our test truck covered 60 mph in 7 seconds from a standstill at our test track.

What causes a Chevy Silverado to throw an OBDII code?

Faulty Charcoal Canister – The charcoal canister is often the cause of P0446. Fuel Tank Sending Unit – It is possible for the fuel tank sending unit to go bad. This can mess with line pressure and throw the code.

What causes a Chevy Silverado to turn over slowly?

A weak battery will produce a weak spark at the plugs, and will turn the engine over slowly. A worn distributor cap, old or broken plug wires or a worn distributor rotor can result in a weak spark at the sparkplugs, causing the engine to turn over excessively before catching.

Why does my Chevy Silverado have no spark?

Common causes for no spark are a weak battery, indicated by a slow-turning starter, a faulty ignition coil or a wet ignition system. Less common problems are faulty sparkplugs, broken or disconnected coil wires or broken wires in the ignition system.

When did GM start using Vortec on the Chevy Silverado?

In 1996, GM began implementing the vortec features on there engines. This included redesigned heads for improved combustion and an intake that has better air flow. It also brought about sequential fuel injection that allowed more precise control over the air/fuel ratio.

Is there a TSB on a Silverado 5.3?

For the 5.3, there is one TSB that applies to the model years of 2004, 2005, and 2006. 2006 also has two other TSBs. This TSB affects the engine and engine cooling. An intermittent check engine light may be present due to five possible internal trouble codes. There may also be an extended crank after filling the fuel tank.

What was the first year for key cylinder PassLock?

I understand that 98 was the first year for the key cylinder passlock in the trucks (my ’97 does not have Passlock)

How can I Fix my Chevy Silverado ignition?

Wedge a shim in the connection and secure the new connection with hot glue, silicon or any other glue that can be fairly easy to scrap off and remove if further maintenance is required. Replace the steering column cover and that’s how you fix the ignition in your GMC Sierra or Chevy Silverado 1500, 2500 and 3500. Loading…

What causes Chevy Silverado to shut down while driving?

Parts stores can scan it for you if you don’t have access to a scanner. But we don’t recommend driving anywhere until your Silverado is fixed, since dying at the wrong time can cause a collision. 1. Out of Fuel

Is there a way to Fix my Chevy Silverado?

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What was the problem with my Chevy Silverado?

I was having a problem with my 2000 Chevrolet Silverado. It was starting hard all the time with the exception of first thing in the morning. The first start of the day would go just fine, but the rest would turn over and over rapidly until I pumped the gas pedal. Then it would start but it would sputter for a little bit.

Why does my Vortec 5300 engine not start?

A faulty fuel pressure regulator can lead to your truck either getting too much fuel, or too little fuel. The result in both instances can be misfires, poor idling, loss of power, engine shakes during acceleration, and more. On the Vortec 5300, one of the most common symptoms is hard starting, or trouble starting the car.

What causes a Chevy Silverado to start without turning the engine?

A fuel delivery problem is usually caused by a clogged fuel filter, no fuel in the tank or a faulty fuel pump. A starter that spins without turning the engine is caused by the starter gear failing to engage the engine’s flywheel.

Why does my Chevy Silverado 1500 start cold?

Starts fine cold because its in open loop and using extra fuel to run but once its in closed loop with the idle air control reset there just isn’t enough fuel to start right away. One way there is too much air and the other would be not enough fuel.

Can a 1999 Chevy c1500 / k1500 start?

Hi, our 1999 CHEVROLET C1500/K1500 is having the same issue. After sittiing for a few hours, we have to crank it and eventually put a little gas or tarting fluid in the throttle body for our truck to start but runs and drives fine once it does start and will start right up after only sitting for about an hour or so. 205 people found this helpful.

Why does my 96 Chevy Express van not start?

Also had a similar issue spin and no start with a 96 Chevy Express Van with the 5.7L. This vehicles issue turned out to be a shorted pink wire in the wiring harness that runs up the passenger side of the block. The vehicle had died while driving several times and wouldn’t start. Then, finally after blowing a couple fuses, would start at all.

What kind of truck is a 96 Chevy?

– CarGurus 96 Chevy C1500 5.7L Vortec Truck won’t start, Replaced Fuel Pump, Filter & Has Spark.

What’s the fuel pressure on a 1996 Chevy c1500?

I stuck a fuel pressure gauge on the fuel rail port and was reading about 50 psi. Unfortunately, as high as that sounds, the injectors won’t even open until you are at about 60 psi.

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 my GM Vortec engine bogging down?

If so look into a vacuume leak or possibly bad igntion components. 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.

Is the 1998 K 1500 hard to start?

Not open for further replies. i am working on a 1998 k 1500 5.7 the truck is very hard to start but when it does it runs fine.. good power and will start fine afterwards,,the problem i am having is when it sits for 2 days then once again it is very hard to start…

Why is my car engine hard to start?

The starter itself may not be cranking correctly due to the heat impacting the relays which drive the mechanisms (this was a common issue in old air cooled VWs, and with how some newer engines are crammed into engine bays similar things can happen).

Why is my Chevelle 350 hard to start?

Fuel pump check valve doesn’t maintain pressure in the fuel rail so it boils and then you have to crank excessively to get rid of the vapor before it will start. Bought a 1972 Chevelle 350 a couple years ago. Every time I drove it it wouldn’t restart easily or sometimes not at all unless I waited a while.

What causes a Chevy Silverado 1500 to hard start?