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90 model TP (Throttle Position Sensor) question

Old 01-05-2019, 06:59 PM
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Question 90 model TP (Throttle Position Sensor) question

Just install a new TP in my F150 (5.0). At first start-up everything seems fine so I took it for a short ride. I felt it revving up. Then from a stop I had to hold brake to keep it from pulling it home and shut it off. Now it wont even start .. Is it possible to install the TP wrong? Like 180 out? This thing been giving me fits.
Any help appreciated
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Old 01-13-2019, 07:10 AM
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I would believe installing it wrong (if thats possible) would set a code. You do have to get it positioned on the correct side of the pin on the throttle shaft or it won't change resistance with throttle position. You can confirm that with an ohm meter.
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Davis336 (01-13-2019)
Old 01-13-2019, 07:09 PM
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It had it running great then it stalled again....seems after warm up is only time it does it. Took to a ford mechanic Tand he said I had a faulty relay and bad connection at relay. 225 bucks later I drive 10 miles and the rpms jump up to 20,000 at a stop light not touching gas. Then went from 20 to 7500 back and forth then stall...wait one min fires right back up. Took it back to mechanic and they still have it. They say they cant get it to act up with them even driving it around. Picking it up tomorrow fixed or not
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