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Re: Automatic Idle control valve question_thoughts and
Posted by grlyd [Email] (more from grlyd) on Tue, 9 Jan 2007 16:34:14
In Reply to: Re: Automatic Idle control valve question, diskullman, Mon, 8 Jan 2007 15:35:33
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Its just that it never buzzed (motor off with ignition on) previously, well not that I noticed and I spend some time with hood up with these cars.
Problem is I have a flat spot at 2500 rpm and have been eliminating possibilities. The vehicle is oddball in that it is a 2.1 that has been turbo'd with lowered compression with numerous enhancements, however it never had this faltering acceleration at around 2500 rpm, this just gradually crept in. I suspected AMM but I had this professionally tested and all seemed as it should be. I have replaced everything to try eliminate the falter, various turbo's, intercoolers, all hoses, recycle valve, 02, wires, distributor, temp sender, etc. It comes down to now the AIC and the throttle position sender as next to eliminate. One thing is that as the boost comes on 1-2 psi at 2500 rpm) there is a definite sound of rushing air which I don't notice with my other vehicle, this is not turbo plumbing etc. thought this may have something to do with the AIC somehow, seeing as how it buzzes and idle fluctuates a touch during warm up, anyway I will keep at it.
Thanks to all for your advice.
posted by 58.165.107...
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