Idle Problem 1998 4.6
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Junior Member
Joined: Nov 2001
Posts: 1
Likes: 0
From: Alabama
Idle Problem 1998 4.6
The engine stalls sometimes when I come to a stop or slow down. Ive noticed the rpm hanging around 450. It idles fine when in park or neutral.
I do know that I have a bad oxygen sensor. Could this be the cause? Is there any way to increase my idle rpm?
I do know that I have a bad oxygen sensor. Could this be the cause? Is there any way to increase my idle rpm?
Last edited by stdoc; Nov 5, 2001 at 02:03 AM.
Senior Member
Joined: Sep 2000
Posts: 1,704
Likes: 0
From: Mpls, MN
Search "EGR"
It sounds as though your EGR valve is clogged and not closing at idle, as result the fuel mixture becomes too lean and your engine dies.
It could also be a vaccuum leak on the intake.
It could also be a vaccuum leak on the intake.
Senior Member
Joined: Jul 2000
Posts: 5,116
Likes: 3
From: Houston, by way of every major city in America.
A bad 02 sensor will send too much fuel into the engine, causing all kinds of sputtering and an overly rich condition. Is there any black smoke out the tail pipe when this happens? Don't overlook the the EGR system too, like AJ said. Good luck,,,,98