Strange Idle...
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Senior Member
Joined: Oct 2004
Posts: 119
Likes: 0
From: Florida
Strange Idle...
All,
The idle on my '01 Expy 4.6 has been acting a bit strange lately. After driving the truck for a while (say 30 mins) and I come to a stop, the idle dips below 500rpm then pops back up to normal. It does this almost everytime I stop. I also discovered, on accident of course, that it does the same thing when I move the shifter to 'Drive 1'. It's really weird.
This is what I've replaced thus far for reason other than this:
Spark Plugs (new Motorcrafts)
DPFE
All COP's
Fuel Filter
Air Filter
PCV Valve
Cleaned TB and Ports
Any suggestions are greatly appreciated.
Anthony
The idle on my '01 Expy 4.6 has been acting a bit strange lately. After driving the truck for a while (say 30 mins) and I come to a stop, the idle dips below 500rpm then pops back up to normal. It does this almost everytime I stop. I also discovered, on accident of course, that it does the same thing when I move the shifter to 'Drive 1'. It's really weird.
This is what I've replaced thus far for reason other than this:
Spark Plugs (new Motorcrafts)
DPFE
All COP's
Fuel Filter
Air Filter
PCV Valve
Cleaned TB and Ports
Any suggestions are greatly appreciated.
Anthony
Senior Member
Joined: Feb 2006
Posts: 3,762
Likes: 0
From: Windsor, Ont.
Wow, I know most of the parts are cheap and should be done anyways but COP's? Personally, cleaning/replacing the IAC may help if not solve the problem. I know what your sayin' but it's hard to nip it. Try a scanner and see if there are any codes. Mine will do this sometimes, like once in a long while so I don't think too much on it.