89 f250 5.8 hard to start and you have to feather the fuel to keep it running


Asked by May 31, 2015 at 05:55 PM about the 1989 Ford F-250 STD Standard Cab 4WD LB

Question type: Maintenance & Repair

This is a low miles truck one owner and the problem just started a couple days ago. You
have to pump the acc to get it to start and then to get it to run you have to feather the

4 Answers


Hello, With the 351 and fuel injection, you aren't doing much pressing the accelerator -- by moving the throttle plate -- other than activating the TPS (Throttle Position Sensor)... I would check your codes, and if fuel pump/pressure/filter are OK, I would suspect the TPS... I have always said of Fords of that era, they need a TPS in the glovebox just in case....! Good Luck, AskTrannyMan

1 out of 1 people think this is helpful.

And Just One More Thing... Reason for code checking... An open coolant temp sensor on models with the 302 or 351 will tell the computer that the engine is fully hot, and barely give enough fuel to start...and barely enough to run and gain speed. And, They Won't always set a code. Hope this Helps, AskTrannyMan

1 out of 1 people think this is helpful.

I will try that I just happen to have one but for now the boss lady says it is time to eat but thanks alot for the insite


i am no closer to resolving the problem but i did notice when i could get it to run the inst panel show alt not charging i took alt off and had it check and it is ok

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