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Chevy S10 - GMC S15 and Sonoma Engine and Underhood Issues

363 messages,  Last post on Nov 07, 2009 at 8:24 PM

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What is this discussion about? GMC S-15, GMC Sonoma, Chevrolet S-10, Truck

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#292 of 363 93 sonoma water temp by zbkeebler Apr 24, 2008 (7:01 pm)
i have a 93 sonoma with the non vortec 4.3L(z engine code) and i put a after market water temp gauge and a new sensor in and it is reading 220-235 and i'm not sure why its so hot. i changed the fan clutch and the thermostat and the waterpump is still good. one of my friends has the vortec engine in a 94 silverado and his runs about 195 and his sending wire is metal with the spiral type cover and i just have a typical electrical wire and he thinks that is the problem and it is just reading wrong but i dont think thats it and i am not sure if the non vortec is supposed to run hotter or what???
#293 of 363 Re: ...oscillating whine, or buzzing sound ...... [2002sonoma] by acobbold Jun 06, 2008 (4:32 pm)
Replying to: 2002sonoma (Apr 14, 2008 5:25 pm) I have a 2002 sls 4x4 extcab, buzzing noise out of the distrubutor, took off the cap it was full of white cake which had pushed its way down the dist. shaft and dried out the bearing, had the shaft removed and cleaned, changed the cap, need a tune up, I only have 48000 miles, check your 3, o2 sensors, each cost $166.00, they should flucuate between 150-950 mv, watch for stuck o2 sensor, usually around 520 mv to 950mv, change them all, ebay has all 3 for less than $150 complete, your dealer should be able to give you a diagram to show you their location, driver side hardest to change, must have small hands, locate passenger side and last one at the catalytic convert. i also had a 2x4 to 4x4 actuator problem, took it to a qualified tranny shop $500. later same problem, especially in the winter time, keep that 4.3 tuned up and buy an OBD CHECKER , (a good one) do not skimp here, it will pay for itself in the end, run a scan every month, egr valve is $303 dealer, ebay $83, all prices CND.   good Luck
#294 of 363 Random Misfire 2002 Sanoma by sanoma4x4 Jun 12, 2008 (7:45 am)
I have a 2002 GMC Sanoma Crew Cab 4X4 SLS. When I am on the highway doing between 70 and 75 for about 20 minutes the check engine soon light starts to flash. I put on the ODB tester and it comes back 0300 for a random misfire. The car runs fine and has no problems at low or high speed. I have 51000 miles on a 4.3 engine. I had to replace the distributor and did a complete tune up. Fuel pump pressure is good. Any suggestions would be appreciated.
#295 of 363 Re: replacing manifold gasket [tripp97sonoma] by dagandw Jun 14, 2008 (4:51 pm)
Replying to: tripp97sonoma (Mar 01, 2008 3:19 pm) not hard... make sure you have gasket grease [(and) a gasket] and to disconnect the battery Replies to this message: sanoma4x4 (Jun 15, 2008 8:33 am)
#296 of 363 Re: replacing manifold gasket [dagandw] by sanoma4x4 Jun 15, 2008 (8:33 am)
Replying to: dagandw (Jun 14, 2008 4:51 pm) That almost sounds to easy of a fix, I will try it next week end. Thanks for the info.
#297 of 363 Chevy s10 Xtreme 99 4.3L under the hood problems by xtremes10 Jun 17, 2008 (3:57 am)
On a cold day or rainy day or just in the morning when you first start up it runs like a champ but after it gets hot ive noticed that nun of my power is there so say im in 3rd gear and i gas it, it skips sometimes cuts off on me makes like a skiping noise and smells like something is bruning and its only when its hot outside so im thinking something is getting hot and not running right ive done the wires plugs Mass airflow still the same problem sometimes if u try to give it gas it will stall and i have to pull over on the side of the road or w/e to let it cool off before i can go anymore and after that i still dont get to far i hope you can help me thanks
#298 of 363 Low RPM engine vibration by bajaracer Jun 19, 2008 (1:41 pm)
I have a 2001 Sonoma with the 2.2 4 cylinder engine. At low RPM (under 2500) I have an engine vibration to the point of shaking the dash board. At speed with the truck it all smooths out. The truck has 115k miles on it. My first thought is that the timing chain and tensioner is worn out and changing the timing at low RPMs.......any other ideas? Thanks Replies to this message: paulbaker (Aug 22, 2008 1:05 am)
#299 of 363 engine type? by cinqoman22 Jun 23, 2008 (5:46 pm)
I have a '94 sonoma that does not have the original engine in it. Unfortunately, I got the truck after the engine switch. I don't know exactly what type the engine is, and I can't seem to see the code stamped on the rear of the block. The engine has 2 injectors that spray fuel downward into what looks like a carb, but I don't think it is a carb. Any help would be appreciated. Replies to this message: mickeymouse2 (Jun 23, 2008 8:22 pm)
#300 of 363 Re: engine type? [cinqoman22] by mickeymouse2 Jun 23, 2008 (8:22 pm)
Replying to: cinqoman22 (Jun 23, 2008 5:46 pm) GM used a 2.2L =4 cyclinder and a 4.3L =V6 on that. The Fuel Injection is called Throttle Body Injection TBI for short. Even though there has been an engine change, it is one that will bolt up to your transmission. You either have a 2.2 or a 4.3.
#301 of 363 2000 S-10 cooling fan by boomerff373 Jul 16, 2008 (1:59 pm)
I was wondering if anyone had a good way of testing the fan clutch on my truck. I don't think its locking up all the way. Any help would be appreciated. Replies to this message: gonogo (Jul 17, 2008 8:39 am) boomerff373 (Jul 17, 2008 1:04 pm)

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