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pamela brown Posted on Mar 28, 2014
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Stuttering acceleration Hello, I have a 1997 Chevy Silverado pickup 5.7 liter 4wd I have a problem with a stuttering,almost stalling out when I reach 30-45 mph, once I reach past 45mph it stops. So, I start truck up, put my foot on gas pedal,once it is around 30-45 mph it starts stuttering,acting like it wants to stall,heistent,so I press my foot on gas pedal more and once it gets past 45-50 mph it stops the stuttering etc and rides smooth.

1 Answer

Ricky Peters

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  • Chevrolet Master 2,620 Answers
  • Posted on Mar 28, 2014
Ricky Peters
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Has the engine light come on yet?

  • 5 more comments 
  • pamela brown Mar 28, 2014

    no check engine light on

  • Ricky Peters
    Ricky Peters Mar 28, 2014

    There is so many different things that could cause problem.So trying to guess at what is wrong will just get you many different answers.So what i'm saying is with out having any codes from the computer then it will need to be traced down.

  • pamela brown Mar 28, 2014

    well it had 2-o2 sensors replaced,throttle control sensor,IAC sensor,and some other sensor took the cover off the intake and sprayed it,could it be a vaccum/air line? it was at a shop for this and they were suppose to fix it,but I guess it is something else..but what?

  • Ricky Peters
    Ricky Peters Mar 28, 2014

    OK here's what i think it might be.Have someone who knows how to check the fuel pressure with the key on and engine off your fuel pressure should be between 60-66 psi.If its not within these specs replace the fuel filter and fuel pump.

  • pamela brown Mar 28, 2014

    The fuel filter has been done and would the whole fuel pump need to be replaced? I checked out the prices online and there is a fuel pump with assembly and then there is a fuel pump?

  • Ricky Peters
    Ricky Peters Mar 29, 2014

    I get my parts from www.rockauto.com and i would get the fuel pump assembly by Airtex part #E3622S.I've used many of this brand fuel pump with no complaints.It cost $92.89

  • Ricky Peters
    Ricky Peters Mar 29, 2014

    Make sure to check the fuel pressure first before you buy a pump that you may not need but,if this has never had the fuel pump replaced before then more than likely thats the problem.

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5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Jan 27, 2009

SOURCE: 1997 ford e 350 v-10 stutters when accelerating. Smooth otherwis

Water jackets pretty tight on heads. Replacing engine right now for this problem on customer work van. Pull plugs and look for any cylinders with antifreeze in them. This truck had 250k and same problem.

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Anonymous

  • 4669 Answers
  • Posted on Feb 27, 2009

SOURCE: hard to start when cold and doesnt accelerate past half pedal

Sounds like low fuel pressure.

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Mar 11, 2009

SOURCE: car idles low, stalls after start

Common issue at the shop (i'm a ford technician), here is what I do to correct it.
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is the idle speed control air-bypass valve and throttle valve (IAC for short), they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Anonymous

  • 1486 Answers
  • Posted on Jul 03, 2009

SOURCE: Pontiac G6 2005 - starts then stalls immediately

Chage the throtle possition senser.

ttmam

  • 2 Answers
  • Posted on Aug 17, 2009

SOURCE: 2001 jeepgrand cherokee wobbles and shakes @low speed

steering stabilizers are shot. I had the same problem, you hit a hole or bump and it starts to wobble then it resonates to a death wobble til you slow enough to stop it.

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