2001 mustang v6 rough idle - Ford Mustang Forum

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post #1 of 3 (permalink) Old 07-18-2009 Thread Starter
V6 Member
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staabo1's Avatar
Joined: Feb 2009
Location: Springfield
Posts: 9
Any Suggestions? 2001 mustang v6 rough idle

i change my buddy passenger side exhaust manifold gasket on his 2001 mustang with a 3.8L and now it has a rough idle. i had to disconnect the mas and the map sensor and egr tube. Then after i reconnected all the sensors and tube it has a rough idle. the only time it has the rough iis when you hit the brakes. it jumps around from 600- 900 rpm when braking.i was wondering if anyone had any ideas?

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post #2 of 3 (permalink) Old 07-18-2009
stringsplayer's Avatar
Joined: Apr 2009
Location: Chula VIsta
Posts: 19
check all the vaccuum lines
sounds like the power booster is sucking to much or little
triple check every fitting and connection

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post #3 of 3 (permalink) Old 07-18-2009
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Joined: Mar 2006
Location: Greensburg
Posts: 8,348
Double check you mas plug again.......

2002 V6 Turbo 10:25@134.52
2001 V6 Nitrous 12:94@104.88
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3.8 problems , rough idle , v6 mustang

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