Problems
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New User
Joined: Sep 2006
Posts: 2
Likes: 0
Problems
I was wondering if you guys have any input on this problem im having. First off I have a 99 f350 with a 5.4l auto. Whenever i accelerate over 2500 rpms and let off the gas rpm fluctuates from 1k to around 1250rpm about 3 or 4 times and then settles at 1000rpm. I pulled a stored code. a p0133 or whatever it is the IAT voltage to high one. Cleared it and it still does it but the coded hasnt popped back up. did a vacuum check but it turned out good as well. you guys have any other suggestions? thanks
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
If it's IAT and not a MAF code, your IAT may be failing. I believe your IAT is integrated in the MAF, so you are probably going to have replace the MAF. However, check the wiring harness for shorts or cuts.
