1997 Ford F150 Poor running after warm up

1997 FORD F-150

97,000 MILES • V8 • 2WD • AUTOMATIC

GRASSLANDPOWER

MEMBER
3 POSTS
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My F150 Starts like new when cold starting. As it warms up it starts to hesitate and then eventually will not idle and dies out. Basic tune-up has been done. I do not know the history of this Truck, I bought it from a small dealer and he is un-willing to help in any way. Any ideas would be helpful

Jun 4, 2008 at 1:00 PM

MERLIN2021

CAR REPAIR CONTRIBUTOR
17,250 POSTS

Is the check engine light on?

Jun 4, 2008 at 1:14 PM

GRASSLANDPOWER

MEMBER
3 POSTS

Not sure on the check engine. Have not been using the Truck. I will get back to you very soon.

Thanks

Jeff

Jun 4, 2008 at 1:21 PM

GRASSLANDPOWER

MEMBER
3 POSTS

I did check the Truck again ... as always, it starts perfect but then will hardly run after warm up. Check Engine Light did NOT come on when running. Did light up when key turned on as expected.

Jun 4, 2008 at 2:30 PM

MERLIN2021

CAR REPAIR CONTRIBUTOR
17,250 POSTS

https://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video.
Once it warms up it goes into closed loop and all sensors are added into the mix...Map or MAF, even the ECT which acts like the choke could be a bit out of range. Check also for stuck EGR.

Jun 5, 2008 at 2:37 AM

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