99 F-250 5.4l Engine Problems
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Joined: Jul 2004
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99 F-250 5.4l Engine Problems
When starting the truck it goes to a high rev and then dies, sometimes it will backfire through the intake. Wont idle or stay running, the check engine code i got was p0102 which means MAF sensor low input. I have replaced the sensor and that made no difference. I was thinking maybe the timing chain jumped, i pulled the valve covers and i dont see anything wrong with the valve train everything seems to be opening and closing correctly as far as timing goes i think i can see the copper links of the timing chain which line up with the timing mark on the camshafts every 61 rotations. Is that normal? when the timing marks on the chain and camshaft line up the RH side is at 11 O'clock and the LH is at 12 O'clock which acording to the ford manual is correct. when i rotate the engine the marks are off and it takes 61 revolutions for them to line up again. im at a loss for what the problem is, any help would be great
Cameron
Cameron
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Joined: Sep 2007
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check for vacuum leaks first.
I had a 5.0L mustang where I had accidentally grounded out the MAF sensor through an intake setup, and it made the car do the same thing your truck is doing. -so maybe make sure the MAF is isolated.
good luck!
I had a 5.0L mustang where I had accidentally grounded out the MAF sensor through an intake setup, and it made the car do the same thing your truck is doing. -so maybe make sure the MAF is isolated.
good luck!
