2008 Ranger


KathryncG

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Joined
Oct 31, 2019
Messages
1
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0
Points
1
Location
Mohave Valley, AZ
Vehicle Year
2008
Make / Model
Ford Ranger
Transmission
Manual
My Ranger idles so high I'm afraid to drive it. Reading the posts from you folks gives me hope and I will figure it out. And now I have a few more people to get advice from! Thanks in advance for sharing your knowledge.
 


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RonD

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Joined
Jun 2, 2012
Messages
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Points
113
Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual
Welcome to TRS :)

What size engine in your 2008, there were 3 options, 2.3l, 3.0l and 4.0l?

First see if the computer is setting a high idle or if a Vacuum leak is causing it

Locate your IAC Valve, upper intake near throttle plate
It has a 2 wire connector, unplug it, so you know how and then plug it back in

Start engine
Unplug IAC Valve
Engine should stall if cold, if warm then it should drop to 500 rpms, barely running or it may stall as well

If RPMs stay high you have a vacuum leak, OR......................IAC Valve is stuck wide open, broken

If RPMs drop then computer was doing it, holding RPMs high, could be ECT(or CHT) sensor issue
 

Oxxon

Active member
Joined
Apr 21, 2019
Messages
233
Reaction score
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Points
28
Location
Brownsville, Tx
Vehicle Year
2002
Make / Model
Ford Ranger
Engine Type
2.3 (4 Cylinder)
Transmission
Automatic
2WD / 4WD
2WD
Hello and welcome to TRS!!
 


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