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another hesitation thread.... with a twist

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Old May 16, 2010 | 06:45 PM
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Default another hesitation thread.... with a twist

so i get my car all together after the winter take it for a drive its running great stop to get a drink. go to start car again starts fine go to leave and its stuttering and hesitating give it a little gas and it takes off like a freight train. it only does it when it is heat soaked i have to drive it for like 45 min or so then shut it off restart and when i go it bucks and hesitates give it a little gas and it doesent do it until i try to restart it again wtf it feels like a clogged fuel filter but it has good pressure. im at a loss. i checked all the wires the plugs are newish all the grounds are tight cleaned the maf. there is a tick coming from what seems to be the 5 hole but i just attribute that to lts
any insight greatly appriciated
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Old May 17, 2010 | 09:33 PM
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Well change the fuel filter it don't cost much! And also might wanna check the injectors.
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Old May 27, 2010 | 09:24 PM
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changed filter no change. i did notice that when this is going on i have less vacuum at idle and when i give it a little gas i get more vacuum. its exacly the opposite of what its supposed to do. it only does this on a warm restart and then only for about 20 seconds. if i had a vac leak it would do this all the time. oh the tick turned out to be a bad header gasket. i hope someone can chime in with a gem of wisdom and help me out my brain hurts from overthinking this. thanks, Chris
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Old May 29, 2010 | 09:18 PM
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turned out to be the engine coolant temp sensor wasent sending proper info to the pcm on warm restarts i apparently broke it when i was reinstalling the headers
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Old Jun 2, 2010 | 08:55 PM
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My car does the exact same thing. Maybe I'm gonna try this and report back...
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Old Jun 2, 2010 | 11:34 PM
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Originally Posted by 500@10psi
turned out to be the engine coolant temp sensor wasent sending proper info to the pcm on warm restarts i apparently broke it when i was reinstalling the headers
You talking about the one on drivers side head behind power steering pump?
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Old Jun 3, 2010 | 10:01 AM
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Originally Posted by BrianC98Z28
You talking about the one on drivers side head behind power steering pump?
It is that one.
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