Last post on Nov 15, 2013 at 8:17 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma
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Chevrolet S-10, GMC Sonoma, GMC S-15, Truck
#225 of 240 2003 chevy S10 troubles, please help, thankyou
Nov 09, 2012 (4:42 pm)
hi i have a 2003 chevy s10. it seems not to have the power it use to. when i get on freeway or been driving for while it slows down to 10to25 mph and when i hit the petal i dont see the rmps on dash go up. it feels like no power, when i gently hit gas petal it slowly gets going but never over 30 unless been sitting for while. idk what could be. wondering if anyone had this problem b4. i cleaned the mass air flow sensor wirh crc but it didnt do the trick. any ideas? thankyou for any help you can provide me with.
#226 of 240 Re: 2003 chevy S10 troubles, please help, thankyou [locomatt]
Nov 10, 2012 (6:05 am)
Have you check the fuel side of it / pump / filter etc / are the sparks clean or dark or moist / I am not a mechanic but have a s10 with 210k miles ;o)
#227 of 240 Re: 2003 chevy S10 troubles, please help, thankyou [s100614]
Nov 11, 2012 (11:26 am)
hi ty bud, i got new filter, cant believe how much it was lol, used to paying 5 bucks for one, this one was 40. i also got a new thermostat. do u think it could be the catalacconverter? it sounds like something is lose in it, but im confused can it be that or fuel filter cause of it seems to go slower when it gets hot, first it goes normal, then slows to about 300, then slows to 10 and wont go over 10 or a crawl unless i let it cool at that point. it got this smell too. i was wondering if the catalacconverter would make it do that. i think it does on freeway faster cause im getting englne hotter faster. idk i try filter and thermostat and see what happens. another thing im also confused about is the indash gauges arnt showing it getting hot but i can certainly smell it. ty for ur help
#228 of 240 Re: S10 Sonoma 2001 Clicking Sound [the_goat]
Nov 15, 2012 (4:56 pm)
check coolant level. I assume the oil pressure even at idle is above 7-15 psi.
What is likely is that the intake manifold gasket is seeping coolant into the lifter valley causing the lifters to rattle. replacement of lower intake manifold gaskets will likely repair this issue.
Nov 15, 2012 (5:52 pm)
I have a 99 Sonoma having an issue when i let off the throttle, i get a bad hesitation and at highway speeds its feels like it might stall out. No problems accelerating or idling.
Any help, ideas or recommendations?
#230 of 240 Re: 1995 GMC Sonoma stalls and won`t start [mags468]
Mar 18, 2013 (3:24 pm)
What was wrong with the wires? And where is the junction box located? My truck is doing the same thing...but I can't figure it out....
#231 of 240 Re: 1995 GMC Sonoma stalls and won`t start [mags468]
Mar 18, 2013 (3:31 pm)
My truck is doing the same thing...what wires were messed up?
#232 of 240 Re: gmc s15 4.3 tbi [shaunbromz]
Mar 21, 2013 (9:48 am)
Catalytic Converter needs to be replaced.
#233 of 240 4.3 driveing me nuts
Apr 23, 2013 (2:52 pm)
I have a 96 S10 4.3 that has had an issue for 5 years that has me stumped.
Engine shuts down and will not restart after about 20 minutes driveing time but only in warm weather above 70. It will restart and run fine after 12 to 14 hours for another 20 minutes.
The truck runs great without issue from fall till spring then the weather gets warm and the problem returns. When it shuts down the fuel pressure with the key on is 20psi.
I replaced the fuel pressure regulator, and the filter 3 times, no change. I have not changed the fuel pump, but my thinking is if the pump was going bad it would have quit compleatly by now. I have had several 4.3s and have replaced alot of fuel pumps on them, none acted like this.
Any thought on this would be great
#234 of 240 Re: stalling S10, fuel pump? [cttrucker]
May 13, 2013 (8:03 am)
I have an '85 S-15 4WD Ext Cab and am having the same problem. Sometimes I can't make it a mile from home before this begin, sometimes I drive about 30-40 miles and it doesn't happen at all, however it will almost certainly happen coming up the hill on the way home. At first I could put it in neutral and it would start right up, but the more often it is happening the more trouble I am having getting the car started. The temp gauge will be in the first quarter one second, but as soon as the truck dies it flips up to overheated then back down as soon as started. Went to buy a fuel pump and the fellow told me to wrap my lines to prevent vapor lock, but I wondered if you found a reason why the problem is more prominent near a half tank.
Any advice someone would have would be welcome, especially what are the cheapest things to work on/replace as I try to pin point the problem.