She's been idling very low when I put her in reverse and today she stalled completely.
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2001 Grand Marquis LS -
May want to try cleaning the MAF. Also check that the IAC valve is good. If not it could cause this issue.These are highly engineered precision vehicles, the first step in diagnosing the problem is to strike the suspected offending part sharply and repeatedly with a blunt object, then re-test. -
Cleaned the MAF and it hasn't stalled since. Idle still drops pretty low but it hasn't shut off.2001 Grand Marquis LSComment
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Iac???
"Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob
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"Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"Comment
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Gonna be my next stop. It's nothing that seems to be a problem other than the drop in revs when in reverse.Originally posted by miamibob View Post2001 Grand Marquis LSComment
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should be the same idle in R as D and a little lower than N/P but if it's a good deal lower even after fully warmed up, then there's other issues, and probably the IAC is the culprit. It may need a good cleaning.
also, I've heard about an IAC hack for Police cars to get the idle down a dink by restricting the IAC hose. Check that on yours to make sure some previous owner didn't do that. If they did, remove the restriction.
use this video for reverence:
Last edited by sly; 07-14-2014, 03:25 PM.
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Originally posted by gadget73Originally posted by dmccaigComment
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