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

First Problem....WEIRD

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Old 06-16-2005, 08:06 PM
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00Stang
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Default First Problem....WEIRD

Ok...I went to start my car during lunch today and it started fine and immediately turned off. Tried again, did the same thing. Started it once more and kept revving it and it stood on until I stopped giving it gas. Had a friend at work look at it and I started it and he pulled the throttle from the under the hood and it went back to normal, now it starts and idles and I drove it ten miles home no problem. Now he said he can hear something that sounds like a small vacuum leak. One of my other mechanic guys at work says it could be the fuel filter. Anyone have this problem?? I know it's weird but I thought I'd give it a shot....any advice would be great! Thanks!!


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Old 06-16-2005, 08:08 PM
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JonBeast
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Default RE: First Problem....WEIRD

This has been posted before and me myself has had this problem too. All I can tell you is a quick fix, just raise the idle a little bit. Thats all I did so it would run, and then it suddenly stopped acting up a few days later.
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Old 06-16-2005, 08:36 PM
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screwedup4.6
 
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Default RE: First Problem....WEIRD

IAC?
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Old 06-16-2005, 09:02 PM
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01roushnj
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Default RE: First Problem....WEIRD

first of all is your check engine light on?????? i think its probably your IAC valve. Before you go and spend $100 on one, try unplugging your MAF and then start the car up. If the the problem persists it is DEFINATELY your IAC.
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Old 06-16-2005, 10:39 PM
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00Stang
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Default RE: First Problem....WEIRD

ORIGINAL: 01roushnj

first of all is your check engine light on?????? i think its probably your IAC valve. Before you go and spend $100 on one, try unplugging your MAF and then start the car up. If the the problem persists it is DEFINATELY your IAC.
No, my check engine light hasnt come on at all, not even when it died out the few times.
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Old 06-17-2005, 02:09 AM
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sickspeedgt
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Default RE: First Problem....WEIRD

mine did the exact same thing about 3 weeks ago.......... mine was the IAC. go to autozone buy a new one for 40 bucks, take 5 minutes to swap it out, and ZING........... back on the road
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Old 06-17-2005, 11:09 AM
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00Stang
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ORIGINAL: sickspeedgt

mine did the exact same thing about 3 weeks ago.......... mine was the IAC. go to autozone buy a new one for 40 bucks, take 5 minutes to swap it out, and ZING........... back on the road
I don't get it though, the car is running fine now, should I still replace the IAC????
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Old 06-17-2005, 09:17 PM
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sickspeedgt
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Default RE: First Problem....WEIRD

well............... i'd go buy the IAC, and keep the receipt. then if it messes up within a month, you have a spare to change it out. and if it keeps working, then you can return it......... but since its messing up, i'd just replace it now.
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