Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Chevy S10 - GMC S15 and Sonoma Starting problems



  • gonogogonogo Posts: 869
    Could be, lots of starters near the exhaust have a heat shield.
  • my 03 s10 4.3 4wd with 150000 cranks but wont turn over, while its cranking it will stop and slowly crank like the battery is dead even thouygh i have it hooked up to a jumper, when it does turn over it hesitates horribly the entire motor and truck shakes violently. if i try to put my foot on the gas the truck dies and puffsback thru the intake i replaced the fuel pump at 125000 im just baffeled on y this is happening any help woul;d be greatly appreciated.
  • I had a similar problem after trying to get full value for synthetic oil. :( I think there's a sensor in the case which gets 'blinded'. Another thing I've discovered is that cranking doesn't help. I think the computer doesn't fire the plugs until the starter motor is off. Mine now works fine after an oil change. It seems to like one short crank to get fuel going (short), and then just a tap and release on the starter. It now catches right after I release the key, and it was cheap - an oil change. I didn't 'figure it out and do it, I just did it. It seemed to take a month or so to clean off the crank(?) sensor, but long term cranking never worked for me. It didn't work for you, obviously, either. I don't think the computer goes to the next instruction until you quit cranking. I don't think it would hurt to run some cc cleaner in the first oil change. Please let me know if it helps. Thanks
  • hoodlatchhoodlatch Mid-westPosts: 255
    Please don't put carburetor cleaner in the crank-case. The only thing that is intended to go in to the crank case is engine oil, conventional or synthetic. The symptoms you’ve describe sound like it might have jumped time. If you think it’s a bad crank sensor, pull it out and replace it. That’s a lot cheaper than replacing an engine that blew up from carburetor cleaner. :confuse:
  • would seafoam be ok to clean out the crankcase? i also have a strong rotten egg smell comin from the exaust
  • qtbrqtbr Posts: 3
    2000 S-10, manuel trans, 2.2 4cyl.. on a cold start it starts normal, once it gets to operateting temp its another story. Or if the truck sits in da heat for awhile, I have to hold the accelerator to the floor to get it to fire. If I dont, the truck will just crank n crank. Ive replaced plugs, plug wires, TPS, coil packs, and fuel filter. Im lost and ready to shoot my truck.. lol
  • hoodlatchhoodlatch Mid-westPosts: 255
    After you go through your procedure to get it started, how does it run then?
  • hoodlatchhoodlatch Mid-westPosts: 255
    Captain - the only time i would use engine flush or anything except detergent motor oil would be just before i tore it down for an overhaul. I use conventional motor oil that has detergent additives. I mostly have highway miles on my rigs so i change oil and filter every 5k miles. when ever i have the valve cover off its clean with no build up.

    did you get a chance to check your timing? is it still belching back through the air intake? Wishing you fair winds. :shades:
  • My 99 S-10 has a 4.3L High output V6. After it rains it want start. I have replaced the plugs,wires, distributor cap,rotor button,coil, ignition control module,and coil. The alternator is new as well as the battery. The fuses are good and it is getting gas. Usualy a day or so after it rains I can crank the truck on the first turn of the key. Any ideas? My email is if anyone knows what could cause this. Just put S-10 in the subject line.

  • out of the blue the truck starts and runs i think it might have been from the truck sitting for 3 months but it still has a small hesitation and a little loss of poweri haveno idea how it worked but i think the thing just has a freiken mind of its own i am howeber experiencing a tranny leak and reverse now seems to take a while to kik in but when i revv it a few times it goes right into gear any suggestions?
  • hoodlatchhoodlatch Mid-westPosts: 255
    Is your S10 a stick or automatic. If its a stick check the the fluid to the slave cylinder. Maybe some of the leak your noticing from your transmission is a leaky slave cylinder. If its an automatic transmission check the fluid level.
  • qtbrqtbr Posts: 3
    after geting it started it runs like a champ. for haveing 170,000 miles on Im really impressed.
  • hoodlatchhoodlatch Mid-westPosts: 255
    I don't understand why holding the pedal to the floor helps it start, especially with a new tpi sensor. I think i would try hooking up an inline pressure gauge and monitor the fuel pressure to see if there is a fluctuation when the engine warms up in contrast to when its cold. Between the hardware store and the auto parts store i got the fixens to make up my own test gauge kit. I hope your fuel pump is ok. They're a real hoot to change out.
  • jmc75jmc75 Posts: 1
    I have a 96 S-10 4.3L with 220000 miles won't start it's getting fuel and has spark I think it is timming how do i check?
  • qtbrqtbr Posts: 3
    I'll give it a shot ASAP. Im tryin to keep it out of the shop and haveing them scope it. Its been mind boggleing for me. Almost like its flooding out. Anyways THANKS! I'll keep u updated
  • jnpjnp Posts: 1
    1997 s-10 truck will periodically not start, almost randomly. It will always crank however. I have noticed that when you turn the key and the dummy lights on the dash go on it starts right up. No lights, cranking but no start. Any ideas what this might be?
  • my 94 s-15 isnt starting because of the neg temp what should i do
  • my 94 sonoma isnt starting because of the neg temp what should i do
  • hoodlatchhoodlatch Mid-westPosts: 255
    how cold is it? it's been fairly cold here in missouri, off and on. last week we were having problems with the hydraulics on the old tractor trying to plow snow off the drive. we stuck an electric dip stick in it and left it in there overnight. that was enough to get it working again.

    during the winter i run lighter grade of motor oil in my s10.

    good luck :D
  • hzinkhzink Posts: 1
    I have an automatic 2000 s-10 with 144,000 miles on it. The truck has some starting problems but overall still runs very well. For several years now the truck takes several cranks to start up and almost always at least three. The truck always starts up but takes sometimes up to 6 cranks, but once in a great while it will start up with 1 turn of the key. I have replaced the plugs, wires, distributor cap, EGR valve, and fuel filter. The fuel pump is also still working fine. The truck has also lost power and feels like it sometimes misses and doesnt spark when accelerating. The gas mileage has also dropped off from an average of about 18 to barely 15. I am trying to avoid the mechanic, any suggestions or help would be great, thanks.
Sign In or Register to comment.