Bad Miss no accel
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Bad Miss no accel
My buddy has a 99 24v with 350k on it and is some what stock has 4" exhaust and it has a power puck on it and he seems to think that there was a programer in it but the original owner did not have the programmer so the program is still in the ecm. Anyway last night he was messing around getting on it and the truck died taking off from a stop. He fired it back up but the truck is missing badly. I did put a fuel test gauge on it and it is at 5psi I know that this is low but think that it has been this low for awhile now. When it idles it has a definate miss and lopes real bad and there is no throttle response. After it runs for a while it will pick up and smooth out a bit and still has a miss but not a bad and does have some throttle response then. Any ideas on what this could be or what to look for or what to do. I am thinking and injector went out but idk for sure. Any help would be greatly appreciated Thanks!!
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Update I just pulled the power puck off and it idles smooth just wont accelerate very well it is very eratic and wont rev up very well maybe up to 1200 rpm or so.
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Update I just pulled the power puck off and it idles smooth just wont accelerate very well it is very eratic and wont rev up very well maybe up to 1200 rpm or so.
Last edited by blkjack; 08-23-2010 at 01:03 PM. Reason: Automerged Doublepost
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Yea I'm hoping that the pump will help it i am trying to get a scanner so i can scan it and see what it has for codes. I also have been preparing him for a vp as well and also an air dog or fass set up along with gauges so we will see what happens. Is there a way to test the VP and see if that is the problem?
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Well I was able to get ahold of a scanner and the codes of interest that I got was P01688, P01689, P0251, P01689. I cleared the codes and started the truck and the only ones that come back are P0251, and P0252. Do these definatly mean time for a new VP or is there something else that could be wrong? My buddy doesnt have any $$ for a pump if we can figure something else out that it could be just trying to help him out as cheaply as possible. And thanks guys for all of your imput so far.
---AutoMerged DoublePost---
Well I was able to get ahold of a scanner and the codes of interest that I got was P01688, P01689, P0251, P01689. I cleared the codes and started the truck and the only ones that come back are P0251, and P0252. Do these definatly mean time for a new VP or is there something else that could be wrong? My buddy doesnt have any $$ for a pump if we can figure something else out that it could be just trying to help him out as cheaply as possible. And thanks guys for all of your imput so far.
Last edited by blkjack; 08-25-2010 at 12:15 PM. Reason: Automerged Doublepost