Rough idle
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Joined: Sep 2003
Posts: 53
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From: Kelowna B.C Canada
Rough idle
I have a 2001 4.6 4x4 ext cab. When I stop the truck it idols rough and when in neutral it is smooth also smooth when driving. What can be wrong???
Senior Member
Joined: Jun 2003
Posts: 186
Likes: 1
From: Biloxi, MS
numerous things, mine is doing the same thing. check for vacuum leaks, next the IAC should be taken off an cleaned, EGR clean that, make sure the DPFE isn't clogged. do yourself a favor and go buy a Haynes manual, and ohmmeter. this way you can check the specks on these components, to make sure they don't need to be replaced.