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no acceleration after warm up

 
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Old 05-22-2009, 05:36 PM
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no acceleration after warm up

Well i finally got to working on my 87 si automatic again. New problem now. I changed the alt. and new power steering pump because it was leaking. Also replaced the cooling semp sensor like suggested.. Also started replacing some vaccuum lines. after it runs and gets hot or warmed up about 10 min, it starts acting like it's gonna stall when you give it the gas. Has no acceleration at all. I tried another used EGR valve and got the same result. I ran a little seafoam through the intake to clean those out a little bit. When it is parked and just idling it sounds perfect, right around 950-1000rpms. If you give it gas while in park it is fine also. Just when you are under driving conditions.Plugs and wires were also recently replaced.
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Old 05-22-2009, 06:45 PM
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Re: no acceleration after warm up

Mix up any Vac lines while replacing?
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Old 05-22-2009, 06:48 PM
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Re: no acceleration after warm up

Nope , I did them one at a time.One off one on.
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Old 05-23-2009, 02:14 AM
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Re: no acceleration after warm up

Only thing I could think of lol I'm base so I don't have all the special sensors and such that you have at least I don't think I do and I think you do? lol maybe someone else will chime in and help you. Sorry I couldn't be of more assistance
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Old 05-23-2009, 05:56 AM
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Re: no acceleration after warm up

looks like you have a vacuum pipe leak!
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