96 4.0 ohv howling & surging | Ford Explorer Forums - Serious Explorations

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96 4.0 ohv howling & surging

justanother1

Well-Known Member
Joined
April 7, 2004
Messages
141
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0
City, State
Dover, PA
Year, Model & Trim Level
96 XLT; 97 XLT
The wife's ex is howling and not just at idle. I had replace the IAC last summer. I did not buy a genuine Motorcraft. We have also noticed a surging while coasting downhill. I'm not sure if the 2 are connected or if there is 2 different issues. Any thoughts on this would be greatly appreciated.
 






howling fixed

After swapping IAC valve onto my x, I went to the local stealer and bought a new IAC valve($140). No more howling.
 






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