1996 1500 missing when accelerating
October 17th, 2012, 2:00 PM
#13
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Checked fuel pressure is ok around 60 psi and coolant system checks ok where to go from here? Only happens when cold outside and will go full throttle and idle with no problem its the steady acceleration where it acts up
October 18th, 2012, 1:15 PM
#15
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Sometime in the morning I will get p0300 only if I keep holding a steady throttle at any rpm but will idle perfect and if I stomp it in park or driving will rev and go just fine. Lunges and sputters when driving normal acceleration during cold mornings or days. Warm outside problem seems to go away. I've swapped the maf with one that was on my 1999 GMC Sonoma 4.3 and didn't change anything. Wouldn't think both would be bad?
Last edited by chevy1500cht; October 18th, 2012 at 1:19 PM.
October 18th, 2012, 1:32 PM
#16
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Sometime in the morning I will get p0300 only if I keep holding a steady throttle at any rpm but will idle perfect and if I stomp it in park or driving will rev and go just fine. Lunges and sputters when driving normal acceleration during cold mornings or days. Warm outside problem seems to go away. I've swapped the maf with one that was on my 1999 GMC Sonoma 4.3 and didn't change anything. Wouldn't think both would be bad?
Last edited by kevinkpk; October 18th, 2012 at 1:34 PM.
October 18th, 2012, 3:58 PM
#17
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It has distributed cap and button which is not wet when cold and yes I'm pretty sure about the cold weather because it can warm up in the*mornings and still act up just not quite as bad but still noticeable till it warms up outside above 65 f or so. That is the only code besides an o2 sensor which has shown up since I bought the truck 3 years ago and only comes on every once in awhile
October 18th, 2012, 7:18 PM
#18
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Have a smoke test done to see if there is a crack in the intake manifold, or other vacuum leak, that can throw off the fuel metering. But I would fix the problem with the o2 sensor first, possible that the o2 sensor has been an unnoticeable problem, and has just gotten worse.
October 22nd, 2012, 5:48 PM
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Ok I will give those things a try I have a video of what the.truck is doing.its not the greatest but will try to put on YouTube and post link here thanks for all the help.