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Chevy S10 - GMC S15 and Sonoma Stalling/Dying issues

168 messages,  Last post on Nov 02, 2009 at 11:36 AM

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#51 of 168 Erratic Idle and Acceleration probs in WET weather by ncologolf Jan 05, 2007 (6:37 pm)
Hey Folks! Have enjoyed reading the content of this forum and have found some very interesting issues and resolutions. I have a '95 S10 short cab, 4.3, 4X4 PU. 151,000 miles. Looks perfect, runs great with no significant issues over trucks life except....this odd condition that appears ONLY in WET conditions.   Encounter a puddle after a hard rain, drive thru slush or puddles after a snowfall, run thru a gutter with standing water will result; occasionally, in an erratic idle and difficulty accelerating. When at a stop engine will randomly (foot OFF pedal, clutch not engaged) rev and fall (no tach but guess 500+ RPM. Additionally will experience a problem accelerating, will simply not accelerate normally, feels like a speed limiter (not a rev limiter as engine will rev high) is in place. In certain traffic situations I've had to down shift hard to accelerate (when in normal, dry conditions I would have good acceleration in gear I was already in).   Note that Truck has a well maintained K&N oiled air filter and routine normal maintenance done professionally. Note that condition occurs in both 2X4 and 4X4.   A 20 or 30 minute drive on dry pavement or motor off for a while restores normal operation.   Sounds strange....yes, but am CERTAIN of the correlation with wet conditions. Have owned vehicle since new.   Sorry so long for my first post but currently in the middle of Colorado snow melt and experiencing problem as we speak. THANKS for any input. Replies to this message: dthesman (Jan 06, 2007 7:47 pm) hoodlatch (Jan 13, 2007 6:20 am) dthesman (Jan 13, 2007 8:54 pm) and 1 more...
#52 of 168 Re: Erratic Idle and Acceleration probs in WET weather [ncologolf] by dthesman Jan 06, 2007 (7:47 pm)
Replying to: ncologolf (Jan 05, 2007 6:37 pm) seal up the bottom of the distributor cap and see if all youre plug boots are seated properly but put som dielectric grease in those plug boots and see if that works or if u have an exposed spot in a main wire near metal Replies to this message: hoodlatch (Jan 13, 2007 6:20 am) dthesman (Jan 13, 2007 8:54 pm) philscbx (Nov 13, 2007 7:56 am)
#53 of 168 Re: Erratic Idle and Acceleration probs in WET weather [dthesman] by hoodlatch Jan 13, 2007 (6:20 am)
Replying to: dthesman (Jan 06, 2007 7:47 pm) Every now and then I'll flip the distributor cap up, take my pocket knife, and scrape the terminals / rotor. Some times I'll use dielectric if its handy. I wish the cap had a vent on top like some of the other rigs do.   Replies to this message: dthesman (Jan 13, 2007 8:54 pm) philscbx (Nov 13, 2007 7:56 am)
#54 of 168 Re: Erratic Idle and Acceleration probs in WET weather [hoodlatch] by dthesman Jan 13, 2007 (8:54 pm)
Replying to: hoodlatch (Jan 13, 2007 6:20 am) I took my 91 standard cab short-bed 2 wheel drive and put a 383 stroker in it and had a 4' cowl oni it with open end towards windshield,Icould see my intake clearly well when it rained My motor would act like it was choking out and I thought I was pulling in too much moisture down the intake,nope,sealed up that distributer and boom problem solved,rainy day drifting commenced. Replies to this message: philscbx (Nov 13, 2007 7:56 am)
#55 of 168 Re: S10 1995 2.2 JUST DIE / pls help [vikan] by s100614 Feb 10, 2007 (1:39 pm)
Replying to: vikan (Jul 09, 2006 8:13 am) Good Afternoon   Same thing happen to me. I will appreciate any timing information   Thanks   PG Replies to this message: vikan (Feb 10, 2007 4:07 pm)
#56 of 168 Re: S10 1995 2.2 JUST DIE / pls help [s100614] by vikan Feb 10, 2007 (4:07 pm)
Replying to: s100614 (Feb 10, 2007 1:39 pm) Is your truck's timing chain broken? If your 2.2L is the same as mine, you should first do a compression check. If you have zero on any cylinder, pull the head and have it done at your local machine shop because you have a bent valve or valves. You might as well have them change valve guide seals too since it's minimal cost and they'll already have the head apart.   If you have compression in all cylinders, your truck was probably at idle or running at a very low RPM when the chain broke. You are lucky and won't have to pull the head.   Next, when you start to pull the timing gear cover off, the book I had told me to drop the oil pan. DON'T DO IT. Instead, you can remove the two nuts that are on the very front of the oil pan. THEN, using a torx socket, remove the studs that go into the block. You'll see what I'm talking about once you're under there. It will save you a bunch of time. The timing gear cover can then be pulled towards the front of the vehicle instead of having to lift it UP, then forward. It's a very tight squeeze with this engine so the way I described worked best.   When I got ready to install the new chain and gear set, I set my #1 piston to TDC before re-installing the head.   Before you install the head (if you had to pull it), install the plate with the EGR valve and the fuel intake line as well. Believe me, you'll be a much happier person then trying to install those two items AFTER the head is mounted.   When you buy the new timing gear set, make sure you get a new tensioner as well. The new set will come with directions on how to align the marks and set the tension on the chain.   What I did was take a large piece of cardboard and for every bolt and stud that I removed, I stuck them through the cardboard, used a marker to put a box around the group of bolts and labeled them. That saved me a lot of time during reassembly. Good luck!   vi-kan
#57 of 168 No acceleration under full throttle by shokwav68 Feb 14, 2007 (6:54 am)
I have a 92 blazer with the 4.3 CPI "W" engine. The engine has 40,000 miles on it. Was a Jasper long block replacement. Recently under full throttle after engine is warmed up it bogs and backfires through the plenum you can hear it. No trouble codes are stored in the ECM. Was wondering if the problem centered around the TPS? Any ideas would be appreciated greatly. I would rather replace a 30.00 sensor than take it to a mechanic and pay the diagnostic costs.
#58 of 168 Stalling ,Dying & lossing power by flashq Feb 15, 2007 (12:04 pm)
I have a Chevrolet S10,V6,2002,4 wheel auto driver, my gas pressure is good, sometime it backfire through the air filter & stalling all the time, I change lots of parts like injectors ect..., but no luck, there are no codes stored in the ECM,no engine light on. If I drove backward, it drive good, but I go forward it stall.Sometime it will drive good,now it is worst.I am lost.Thank you
#59 of 168 Resolution of wet weather problem by ncologolf Mar 21, 2007 (7:22 pm)
Finally got my wet weather problem resolved. Was a worn coil wire that occasionally got splashed from roadway up rear of engine. Thanks for all the suggestions!
#60 of 168 2003 S-10 by ahinson Mar 22, 2007 (11:34 pm)
HAVE A 2003 S-10,2WD,AUTO,4.3L.DO THESE TRUCKS HAVE A REV LIMITER OR SPEED LIMITER ON THEM.TRUCK RUNS GOOD IF YOU TAKE OFF A LITTLE HARD FROM STOP LIGHT.BUT,IF YOU ARE GOING ABOUT 45-50 MPH AND PUT THE GAS TO THE FLOOR AT ABOUT 5700 RPM OR 65 MPH IT STARTS TO CUT OUT.THE TACH JUST BOUNCES OFF THE 8-9000 RPM RANGE. AND GAINS NO MORE SPEED.DOES FINE IF YOU GRADUALLY GAIN SPEED.

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