Throttle Position Sensor Location
Mountain Pass
Joined: Dec 2024
Posts: 148
Likes: 2
Would a bad tps sensor cause a hard/no start the truck will start but only when I pump the gas pedal like crazy and when it does start its runs like **** and when letting off the gas dies right away I got a code for the tps and the wire does look bad so replacing it when the part comes but just wondering if that could cause the issue I’m having
Mountain Pass
Joined: Dec 2024
Posts: 148
Likes: 2
I get that but the truck starts when gas pedal is pumped repeatedly when trying with out u won’t get much next to nothing and I haven’t tested anything not to sure on how to test the wires but I could give it a shot but from inspecting the wire one is almost pulled out of the sensor itself and the copper wire is showing and it’s from 1989 plus the code so my guess is that
FTE Chapter Leader
Joined: May 2006
Posts: 12,317
Likes: 1,298
From: Central Mississippi
Do you know how to check resistance with a VOM?
Do that before going down the suggested fuel pump rabbit hole.
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Mountain Pass
Joined: Dec 2024
Posts: 148
Likes: 2
fule pumps and fuel tanks are brand new fule pressure is at 30-35 psi more towards 30 the original pumps where the 1989 low pressure style I did swap to the 1990 in tank high pressure pumps but everything seems to work with the pumps so I don’t think anything is mixed up I also replaced fuel pressure regulator and relay
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Mountain Pass
Joined: Dec 2024
Posts: 148
Likes: 2
I do not but I will watch a video and figure it out tps deff looks broke but idk if they would cause my issue I did replace the engine and harness with a 1989 and the cab is a 1990 motor went out droped in a 351 and used the 1990 fuel tank set up with the 1989 harness and pcm pumps work tho so I don’t think the wires are an issue but I’m lost at this point
FTE Chapter Leader
Joined: May 2006
Posts: 12,317
Likes: 1,298
From: Central Mississippi
Well, TPS is on the bottom of throttle body. It has to come off to replace. Make sure you have a gasket for TB.
It works like a light dimmer in how it talks to computer.
If you replace, for all that's Holy, use a Motorcraft part.
It works like a light dimmer in how it talks to computer.
If you replace, for all that's Holy, use a Motorcraft part.
Mountain Pass
Joined: Dec 2024
Posts: 148
Likes: 2
yes I got a gasket and everything I rebuilt the engine so I’m pretty good with mechanics but not wires and oh I see gotcha and yes I got a motocraft one thanks you for the advice really appreciate that
Lead Driver
Joined: Jan 2019
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From: N.W. Alabama
good read, and pics-->Throttle Position Sensor Testing, Replacement and Adjustment - Ford Bronco Forum
Mountain Pass
Joined: Dec 2024
Posts: 148
Likes: 2
good read, and pics-->Throttle Position Sensor Testing, Replacement and Adjustment - Ford Bronco Forum
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