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November 22nd, 2006, 11:06 AM
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Scan numbers
I got my hands on a scan tool. Here are the numbers at idle:
AF- 007 L8- 038 BL- 128 TPS- .48 IAC- 100 CC- 66 How do those numbers look? The car runs good; smooth idle, decent boost (18-19 lbs on the stock gauge). However....the motor will wind up to 5000 rpms, but it stops pulling strong at about 4000 rpms. Any ideas as to what I should be looking for next?
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Jim 1989 TTA #14 Festival car 1989 TTA #916 cloth/t-tops 1984 Trans Am-gone 1971 Trans Am-long gone     
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November 22nd, 2006, 01:42 PM
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TPS and IAC too high
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89 TTA Stock appearing  10.550 at 132.22 1.539 60ft 3850 race weight w/driver Always on 93 octane www.alkycontrol.com 727-570-9999 http://stores.ebay.com/ALKYCONTROL_W...eNameZl2QQtZkm
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November 22nd, 2006, 04:49 PM
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I just took it for a spin to make sure it was warm. Slight change in numbers. AF-6, L8-36 TPS-.49. It runs at 170 degrees.
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Jim 1989 TTA #14 Festival car 1989 TTA #916 cloth/t-tops 1984 Trans Am-gone 1971 Trans Am-long gone
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November 22nd, 2006, 11:10 PM
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Quote:
__________________
89 TTA Stock appearing 10.550 at 132.22 1.539 60ft 3850 race weight w/driver Always on 93 octane www.alkycontrol.com 727-570-9999 http://stores.ebay.com/ALKYCONTROL_W...eNameZl2QQtZkm
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November 23rd, 2006, 09:32 AM
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I guess it helps to read the scan tool correctly. I was looking at the wrong number. IAC is 68 at idle.
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Jim 1989 TTA #14 Festival car 1989 TTA #916 cloth/t-tops 1984 Trans Am-gone 1971 Trans Am-long gone
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November 23rd, 2006, 09:51 AM
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Quote:
High IAC cuases tip-in issues  .38-.46 on TPS 20's for IAC in park no accessories,lights,etc running There is a search feature 
__________________
89 TTA Stock appearing 10.550 at 132.22 1.539 60ft 3850 race weight w/driver Always on 93 octane www.alkycontrol.com 727-570-9999 http://stores.ebay.com/ALKYCONTROL_W...eNameZl2QQtZkm
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November 29th, 2006, 12:52 PM
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TPS is now .38 and IAC is .32. A new problem has arisen now. When I shift into park or neutral, the revs will surge to about 2000 rpms and slowly come down. Vacuum leak? At warm idle, o2 is around .720, but every now and then, a low number (.120 or .130) will briefly appear. Any help would be greatly appreciated.
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Jim 1989 TTA #14 Festival car 1989 TTA #916 cloth/t-tops 1984 Trans Am-gone 1971 Trans Am-long gone
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November 29th, 2006, 05:11 PM
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I'm still in the opinion of if the car idles fine, leave the IAC alone. You're having the same problems I had. The o2's should jump around at everything but WOT
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