Problem for Chevrolet Cars
Generic problem for all Chevrolet Silverado 1500 Cars
Doesn't stay running when i give it gas...
I have a 1988 chevy silverado 1500 and it has a 5.7 in it. If it's idle it runs if I put it in gear it still runs but touch the gas and the truck dies. What's wrong? I have a new fuel pump, fuel filter,pick up coil, computer box,regulator, you name it I've checked it and replaced it. The only thing I haven't mentioned is it sat up for about three years and the guy that was fixing it did the computer box and when you buy a computer box, you have to keep your own proms. I don't know if he did or if he put some out of something else. when I check the fuel pump to see if it's pumping it shoots out gas so I know it works. I checked the IAC, ECM, and couple of other things with initals,lol. I really don't know what else to do. I hope this isn't too big even for you guys.
Comments:
Apr 25, 2009
- Is there something that will make the pressure continue to drop? Apr 25, 2009
- We checked the MAP as well, and the throttle position sensor.Apr 25, 2009
- you guys are giving me really good ieads but most of them I've already tried.
Clarification Request
Posted by mousede on Apr 26, 2009
Couple other things to check; Have you checked for vacuum leaks at the throttle body?
Is it gummed up? If so, clean it up with carb cleaner (injector safe type). I would also check the egr valve, clean or replace as needed. When you replaced the IAC, did you clean the passage out? Chevron techron cleaner, wouldn't hurt to run a can through the gas tank.
Best Solution
posted on Apr 25, 2009
Rank: Guru
Expert
Rating: 85%, 147 votes
Are both injectors spraying gas? Make sure fuel filter wasn't installed backwards and remember if the fuel pressure drops below 9psi those trucks wont run. If injectors are sticking tap them lighty with a wrench and see if that helps
Comments:
Apr 25, 2009
- 88 chevy truck does not have maf it has a mapApr 25, 2009
- you really need to check fuel pressure, can tell how many defective pumps i have replaced
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Solution #2
posted on Apr 25, 2009
Rank: Guru
Rating: 87%, 124 votes
check the fuel regulator,its in between the 2 injectors,its kind of expensive,about $50.00,my old 89 chevy 350 in my dually acted like that,also check the throttle position sensor,then finally check the mass air flow sensor because it may be getting too much air
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Solution #3
posted on May 15, 2009
Rank: Apprentice
Rating: 100%, 1 votes
hey there.....my co-worker had the same problem with his truck...Saturday i looked at it and found nothing wrong with his fuel system,but i found his injector o-ring were shot in it....after replacing it ...the truck ran great....problem solve..
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