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Pickups Chevrolet S-10 & GMC S15 Sonoma Chevy S10 - GMC S15 and Sonoma Engine and Underhood Issues
315 messages, Last post on Aug 26, 2008 at 7:14 PM
You are in the Chevrolet S-10 & GMC S15 Sonoma Forum. Your Host is kcram
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I have a 1995 GMC Sonoma, it will start but only if I hold the throttle wide open and crank it, but when it starts it is shaking real bad, and wants to stall if you dont pump it, and it smells of strong gas odor. I have had the problem before, changed the coil, cap, rotor, wires, plugs, and the fuel pump. This time around it didnt fix the problem, can anybody here give me some help. I certainly would appreciate it. please email me, LiveNLearnSacrifice4Life  yahoo.com thanks, Jim
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Replying to: thawstside (Jun 22, 2007 12:02 pm) Sounds like it’s getting too much fuel. Maybe one of your sensors or connections is faulty. Have you had the codes read yet? If you don’t have a reader of your own most part stores will read it for free to get your business. You might find the following web site helpful in explaining how the different sensors interface with the onboard computer, which is what actually runs your engine. In today’s engine, pumping the accelerator doesn’t do it. We like to think we’re in control but just like 2001: A Space Odyssey (1968), HAL has final word. http://www.aa1car.com/library/1999/cm69910.htm 
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Replying to: hoodlatch (Jun 23, 2007 8:34 am) Please advise if you can help any more. thanks, Jim LiveNLearnSacrifice4Life yahoo.com
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Replying to: thawstside (Jun 23, 2007 4:19 pm) Sounds to me like it has something to do with the MAP sensor or EGR valve. In the past I’ve had to replace them on both Ford’s and GM’s. Sometimes they have a rubber or metallic line running to them that comes loose. Sometimes the sensor or valve just wears out. There’s another possibility on the EGR valve. It can get carbon trapped inside it causing it not to open and close like it should. GM is bad for that. They make an after market gasket for it that has a screen built in to help alleviate the problem. The gasket is less than $10 bucks. The MAP sensor or EGR valve are pricey. Be advised, in the state your engine is in now it is poring out tons of carbon monoxide. Speaking from experience, do your work outside the garage vice inside the garage. My head still hurts every time I see the dent in the wall from where I fell out from being overcome by the CO. Good luck.
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Hey, I just wanted to extend a special thank you to you. I remember a friend talking about the egr valve in the past and when you said that might be my problem I went after it. I took it off, noticed the little plunger/piston was coated in heavy black carbon, I soaked it with carb/choke cleaner for about 30 minutes, I noticed in the end of it there was a star driver hole, so I took a driver, and gently turned it in complete circles, and pushed it up and down and completely cleaned the carbon out of it, it worked freely up and down with no hesitation. After blowing it out and getting it bolted back on and everything plugged in I had my girlfriend try to start the truck. It didnt hardly take any effort what so ever. The truck idled with no hesitation, I drove the truck around for about 25 minutes to make sure everything was fine and the battery was charging properly from the connections being unhooked, it had a small miss before it broke down, but as I stated before I changed every single part under the hood for the ignition. So, like I said, this post is to THANK YOU for your insight and guidance in figuring this truck out. I couldnt have done it without you. thanks again, Jim Brandenburg
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Replying to: thawstside (Jun 24, 2007 8:14 pm) 
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| I have bought ny truck really good looking truck but once i started to drive it i noticed that it would overheat so easily i just need some information on is there something i could add to help cool it or do i have to fix? it i need some major help on this one | |
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Replying to: hoodlatch (Jun 28, 2007 7:03 am) |
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Replying to: curious_gears (Jul 05, 2006 11:43 pm) |
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ok my cousin has a s10 and it has a overheating problem i know that it was lowerd and when we run it going up the road it get overheated pretty easily and it even get so hot that it makes you hot sitting in the drivers seat im not sure what is wrong just please help me out
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