I've been trying to get this new engine running correctly without luck.
The rpm will swing wildly at idle 400-500 rpm
The scanner shows an injector pulse width of 7-10 ms and the new O2 sensor is not swinging showing a rich reading.
Any tips guys?
5.0 idle lope injector problem?
Feb 26, 2004
5 Replies
1991 Ford f150 5.0 AT
Is the vacuum hose to the MAP sensor hooked up? Bob
That is too low for idle speed.
Try setting it around 700 with a -/+ of 50 rpm.
Spdloader
didn't this model have IAC problems?
The idle speed is NOT adjustable, those who mess with the hardstop not knowing what they are doing usually create more problems then they cure.
I still think he forgot to hook up his MAP sensor when he put that new engine in. Bob
I mis-read it. I thought he was trying to set the idle speed himself, down around 4-500.
Spdloader
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