Question about 1997 Chevrolet K1500

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1995 Chevy K1500 4.3L V6. Engine has inconsistant idle

1995 Chevy K1500 4.3L V6. When starting the engine it has an inconsistant idle and will sometimes shut off. If it does stay running, it will idle low then high and correct itself or stall when I put it in gear. It is hesitant when speeding up, feels like a loss of power. I have changed the Spark plugs, wires, cap and rotor, fuel filter, air cleaner and have put some dry gas and fuel injector cleaner in it. Also have cleaned out all of the vaccuum lines. Any ideas? Thank you.

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  • john6336 Apr 27, 2009

    It's been happening for about a month now. The check engine light has never come on and it's not showing any codes when I hook the computer up to it. The only other thing I can think to try is taking the Throttle body off and cleaning it out. Maybe a clog vaccuum port in the TB?

  • david Jun 12, 2013

    im having the same problem but i have a 350 tbi the problem started when i put another trans in i didnt change anything put in another 700r4 its got a full tune up plus map sensor and throtle positioning sensor any help plz

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Have you changed the fuel pump yet?I had the same exact problem.I replaced my fuel pump with an AUTOZONE PIECE OF JUNK fuel pump.That pump lasted almost 2 days.The second day i had it the truck didnt want to start but it did and it ran like ****,and when i put it in gear it ran as long as I didnt touch that gas pedal.You could go get a fuel pressure test or just replace it,your call.You might want to check your filter too but im sure its the pump.Good luck

Posted on Apr 27, 2009

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O2 sensor stopped my 1995 Astro CPI from surging and dieing at idle after the CPI spider was replace. #1 check fuel pressure is within specs. #2 change O2(just do it its cheaper in the long run) #3 have a diagnostic run on the computer sensors.

Posted on May 12, 2010

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This may seem Silly but I had the exact same symptoms when my alternator went out, but... it may be a few different problems. (some that I have experienced first hand) How long has the truck been doing this?

Posted on Apr 22, 2009

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