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July 31st, 2011, 02:12 PM
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#1 |
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Regular
1997 Mustang GT
None yet...
Join Date: Dec 2006
Location: Tampa, Fl
Posts: 372
 iTrader: 0 reviews
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P1507 and P1443 Engine codes
The first one is the Idle Air Control Underspeed malfunction. i don't know what that means. i changed the IAC sensor that attaches to the TB about 6 months ago when i upgraded to a professional products 70MM TB. the second one is the Evaporative Emission Purge valve malfunction. if anyone knows what this is and the causes for each and likely fixes i'd greatly appreciate it. thank you. if its not one thing its another.
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95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot. |
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August 1st, 2011, 11:37 AM
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#2 |
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Enthusiast
1996 Mustang 3.8l
Join Date: Mar 2010
Location: Maryland
Posts: 503
iTrader: 0 reviews
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for the evap code check your gas cap. there should be a rubber oring in there. if its cracked/dry rotten or you didnt screw your cap all the way down it will trigger the evap code.
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 96 v6 - needs v8 03 Roush - needs turbo 06 F250 6.0 - needs stepladder |
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August 1st, 2011, 02:11 PM
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#3 |
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Regular
1997 Mustang GT
None yet...
Join Date: Dec 2006
Location: Tampa, Fl
Posts: 372
iTrader: 0 reviews
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yea, i was told that. and now, my car feels like it is misfiring now... i just changed the IAC modual and its still not working. when i switched the IAC my car idles higher and the RPMs hang longer and when i start my car, the RPMs shoot up.... i don't get it!?
__________________
95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot. |
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August 1st, 2011, 07:02 PM
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#4 |
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Banned
1997 cougar 4.6 1/2PI
TooFast4theFUZZ
Join Date: May 2011
Location: se wi
Posts: 991
iTrader: 1 reviews
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mafs
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August 1st, 2011, 09:30 PM
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#5 |
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Regular
1997 Mustang GT
None yet...
Join Date: Dec 2006
Location: Tampa, Fl
Posts: 372
iTrader: 0 reviews
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well, i changed to my original IAC and the idlle surge has stopped and the RPMs don't hang. however, my car still feels like its missfiring and stuttering... but once i'm in 3-5 gear at higher speeds it calms down and i can accelerate normally. also, i sea foamed the car, i cleaned out the IAC as best i could... heres the weird part, there is NO check engine light on... this is really pissing me off... any insight would be so awesome thank you!!
__________________
95 GT - nothing stock on her R.I.P. 97 GT - New hotness: CAI, 70mm TB, TB Plennum, PI Intake comming soon: PI H/C, shorty headers, o/r x, lower car, sub frames, cc plates, torque box kit, rear U/L control arms, NO2 kit 100 shot. |
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