4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

HElp again plz

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Old 06-12-2006, 02:49 PM
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Guitarhead09
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Default HElp again plz

my car has been making a vibration sound and it has been idleing toooooo low and the rpms have been dropping too fast. even at normal temp and everything, and when i let of the gas the car immediatly slows itself down. It just started doing this for about 2 weeks. someone told me it was my iac valve. BUT yesterday i was in 5th and when i took my foot of the gas the car didnt slow itself down, i thought it fixed itself. But now when i push in the clutch the rpms go higher... and i will be stopped and i will be idling 1500 rpms for a minute then they will drop to 1000. Is this still my IAC vavle??????
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Old 06-12-2006, 04:29 PM
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Default RE: HElp again plz

OK here are some pictures.....
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Old 06-12-2006, 04:32 PM
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Old 06-12-2006, 04:33 PM
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Old 06-12-2006, 06:50 PM
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.................................................. ..............................?????????????????
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Old 06-12-2006, 06:54 PM
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rbstang
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Default RE: HElp again plz

did u replace the iac or just clean it? it could also be the tps.
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Old 06-12-2006, 10:56 PM
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racer02GTstang
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Default RE: HElp again plz

well, my dumb friend i think cleaned it with water and paper towels.... im not so sure....
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Old 06-13-2006, 12:02 AM
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04BlueGT
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Default RE: HElp again plz

Water? No, try carb cleaner or better yet, buy a new one. Can anyone explain how to check voltage on the TPS to him?
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Old 06-13-2006, 01:32 AM
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ORIGINAL: racer02GTstang

well, my dumb friend i think cleaned it with water and paper towels.... im not so sure....

shut up, i cleaned it with engine cleaner. and it came out clear. And my car is still acting weird??
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Old 06-13-2006, 01:51 AM
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footpedal
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Default RE: HElp again plz

I would sugest buying a new IAC,, they are prone to causing problems related to RPM's idleing too low and high and also causing car to stall out and die when stopped,, i would think that if you cleaned it VERY well with carb cleaner and its still doing it.. my next step would be to replace..
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