Idle surging won't stay running
Van & CUV Section Moderator
Joined: Nov 2006
Posts: 5,372
Likes: 115
Please start your own thread to address your issue.
Click here: https://dodgeforum.com/forum/newthre...ewthread&f=100
Click here: https://dodgeforum.com/forum/newthre...ewthread&f=100
Amateur
Joined: Jun 2012
Posts: 32
Likes: 0
From: Texas
Please start your own thread to address your issue.
Click here: https://dodgeforum.com/forum/newthre...ewthread&f=100
Click here: https://dodgeforum.com/forum/newthre...ewthread&f=100
;-/
Vacuum pressure from a bad booster vs, fuel relay vs. fuel pump vs. other
Grand Champion
Joined: Feb 2015
Posts: 7,435
Likes: 578
When your iac starts to go you will get erratic idle speeds and sometime wont idle at all. Throttle body may need to be cleaned also. The V6 has the same type of plenum gasket as the V8's, Major issues with them on the V8's.
Are they out the exhaust or the intake?
A few backfires have occurred as well.
Rookie
Joined: Sep 2016
Posts: 68
Likes: 0
If "Fuel pressure" was the problem, would it be consistent when driving at 20 MPH to 55MPH? That is not a listed problem here in Glennjames post, but my problems with my Van are similiar to his, although they are not consistent.
Registered User
Joined: Jul 2024
Posts: 2
Likes: 0
From: Ohio
Swap the ECU
I know this thread is a couple years old but had a similar problem on my 5.9 Magnum engine.
swapping the ECU solved it.
tried 3 different IAC including one from a known good engine. None would close so the RPM surges to 1500+.
$90 ECU from a boneyard today instantly solved it.
swapping the ECU solved it.
tried 3 different IAC including one from a known good engine. None would close so the RPM surges to 1500+.
$90 ECU from a boneyard today instantly solved it.