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Chevy S10 - GMC S15 and Sonoma Stalling/Dying Problems

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  • Hi, yes it is a tbi. I tried cleaning egr and it didn't appear to have any problem moving. Dont know where or if this model has an egr solenoid. It has a vacuum hose coming out of it. still researching this one.

    Bob
  • I'd bet good money your are right
  • I want to see this beast. Got any images?
    Because when I'm ready, I'll dump the 4.3 when it's due time.
    I might go to a lighter weight V8 like from a Lexus or Beamer.

    http://farm3.static.flickr.com/2378/2000071501_23bcf8e618_o.jpg
  • I am currently working on a 95 Sonoma am having trouble keeping it running. have replaced all sensors engine will start but only runs for a few seconds and then shuts off if anyone has any ideas i would appreciate any help.
  • My son has a 91 s15 that stumbles on acceleration. I have replaced the fuel regulator, fuel filter, replaced plugs, check wires for continuity, replaced o2 sensor. This vehicle idles fine until it reaches running temp. then it stumbles severely on accerleration and then throws rich fuel mixture on the o2 sensor. How much fuel should one see coming out of the injectors into the throttle body while it is idling. This one seems to be alot. I can see it covering the walls and plate pretty well just when idling. I tried to test the tps and the ignition coil and the ignition pickup inside the dist. but not sure if I am doing it right. Any help would be appreciated.

    Bob
  • 1988 Chevy S-10 2.6 V-6 4 wheel drive.When I
    drive the truck for 30 minutes I have to keep my
    foot on the gas a little, because If I don't the
    truck dies, and when I start it up it acts like the
    battery doesn't have the volts, but it only does
    this when the engine is normal temperature.
    Please help me out on this!
  • When the truck warms up to normal temp,when I stop at traffic lights or stop signs,
    if I don't keep my foot on the gas stopped,the truck will die and when I try to
    start it up the starter tries to drag only when it dies.Please help me out with
    a solution?
  • try the ignition module, it goes out,everything goes out except starter. hope this helps
  • try replacing the tps sensor or it may be the injectors
  • i have a 93 sonoma 2.8 v6 have been having simular problem. have had trouble starting it , will fially fire then after you drive it just dies. put in new fuel pump and today ignition switch. but when i was driving i would turn corner and it just dies, tow bills are getting out of control
    please help if you all have figured it out yet
  • I haven't figured my son's truck out yet, but I will let you know when I do.
  • mptimkomptimko Posts: 1
    Hello to all, I come in search of a possible solution. I have a 2000 s10 4wd 4.3 V6 vin W with CPFI (central port fuel inj). Well I have a mind stumper. A few weeks ago, my fuel pump died on me for the 2nd time in 2.5 yrs. So, after much cursing and swearing, I bit the bullet and replaced the pump and harness, flushed the tank, filter etc. It ran ok for a day or two but then it started acting up. What it does is when you start it and go it's great for about 15 minutes and then all of a sudden you can't do anything more than just tap the gas. If you do, say going up a hill or even on flat, it just bogs down and if you geive it even more than half throttle, it backfires up thru the intake, not loudly, but enough. Kinda sounds like when you pull the choke out on your lawnmower and it starts flooding out. At first, you could pull over and shut it off, wait a min and then do it all over again, but now it's gotten progressively worse. I put a full tune up on it when I did the pump, and just yesterday it popped the code for a left bank o2 sensor so I changed that and looked for any vacum leaks but to no avail.. After looking at what else it can be, I have gotten everything from egr valve, throttle pos sensor, maf sensor, clogged cat conv. I am at my wits end cause it ran great until the problem with the pump and I can't go to the garage cause they will kill me on diagnostic charges. Anyone else had this problem????? Thanks for your input
  • red91red91 Posts: 1
    hi ive got a 91, 2.8 tbi, 2wd, and am having some trouble with it. It will start up and run for a few seconds and then it will run really bad. When taking off it will start to die out in each gear up untill 4th thenit dont as bad. Have put new plugs,wires, cap,roter,coil,fuel fiter,air filter,iac valve,map sensor,egr valve,cat,muffler,02 sensor,cleaned inj,have checked the timing alot and found no vacume leaks,it dont give any code or light,took to shop they said map sensor, and now am looking at a fuel pump or tps or a 350 can yall help , kinda on a budget after th parts
  • "What it does is when you start it and go it's great for about 15 minutes and then all of a sudden you can't do anything more than just tap the gas. If you do, say going up a hill or even on flat, it just bogs down and if you geive it even more than half throttle, it backfires up thru the intake, not loudly, but enough. Kinda sounds like when you pull the choke out on your lawnmower and it starts flooding out. At first, you could pull over and shut it off, wait a min and then do it all over again, but now it's gotten progressively worse."

    This is exactly what was happening to my Dad's 1997 GMC Sonoma, we replaced the water pump and haven't had a problem since.
  • Im new to this forum, and have recently been having problems with my 2000 S10, a couple months ago it would randomly short and everything electrical in the car would turn off and on, and as time went on it would get worse and not come back on. So i took it to a Goodyear and they said it was a loose bolt on the fuse box or w/e, which appeared to fix it. Until now...it has come back with a vengeance, it'll die, and after jumping appear to not have full power, go 10 feet and die again. So i dont know what to do to permanently fix this aggravating problem.
  • cinchupcinchup Posts: 1
    ok I hope someone can help. I have a 96 s10 truck manual 4cyl. It has been a great truck until now. Twice now it has stoped on me when I am ideling. It stops and won't do anything. we let it rest for 15 minuts and it will start back up again. After the first time we thought it was the fuel pump and so we first changed the fuel filter, it was clogged bad. Now after it happned the second time we now think it might be my computer system going out. I had a mechanic look at it and we had it running for 2 hours and it only stoped once and started up right away, not like it has been while I was driving it. I don;t need it anymore I just want to be able to sell it running. Any help on where to start would be great. I have many people telling me different ideals but no one knows for sure.
  • vikanvikan Posts: 15
    detritotroph,

    "a couple months ago it would randomly short and everything electrical in the car would turn off and on, and as time went on it would get worse and not come back on"

    Is this while you were driving? Hitting any bumps? At Idle? When you say "not come back on" do you mean it wouldn't start or it didn't flicker off and back on like your lights in the house during a thunder storm? In all instances, I would check and make sure your battery cables are connected well to the frame for the ground points and to your starter/alternator on the hot side. There's something definitely loose on the ground or hot side OR rubbing between hot and ground somewhere creating a shot. Be sure to check and make sure all your fuses are in perfect order as well.

    Was any electrical work done to it lately? New starter? Alternator? Stereo or alarm install? Subwoofer / Amp? After market DVD player? Sounds like it may be a dead short. Look for anyplace a hot wire may come into contact with ground. That's the reason for the questions about the electrical mods. I've seen where people install stereos themselves and tap into a hotwire under the dash and not insulate it where it rubs on the chassis or dash and shorts out.

    Was the bolt on the fusebox a ground bolt? Check for more loose bolts in that area if the fusebox bolt was a grounding point. Loose connections will temporarily disconnect and surge power like you describe also.

    That's the best advise I can give you with the information you posted.

    Good luck,
    vi-kan
  • elroy5elroy5 Posts: 3,741
    My 96 S-10 (4 cylinder) sputters when accelerating. This gets worse as the engine warms up. Sounds like it's poping/backfiring in the throttle body sometimes. There is no check engine light at this time.
  • gonogogonogo Posts: 869
    I would start with a tune up.
  • lilgtolilgto Posts: 12
    During warm weather (mostly summer months) my 2001 S10 has a problem with the idle speed increasing, once I notice the increase in RPMs I can shut the vehicle off, restart it and it goes back to a normal idle. The idle will remain normal until I drive it again for a few miles. I have taken it to a few places but each time they look at it the idle speed does not increase. This problem surfaced the other night and when I tried to pull away from a stop the vehicle about died. The funny thing is I can drive this vehicle for hours in colder weather and it will never occur. As stated this is a 2001 S10, 2.2 engine, auto and about 125,000 miles on it. All preventive maintenance is completed on time. I have a feeling it could be the 2 different sensors or the Idle Air Controller. Any suggestions would be extremely helpful.
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