Throttle Position Sensor woes.
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Cross-Country
Joined: Jun 2021
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Throttle Position Sensor woes.
1997 F-350, 7.3L E4OD. I pinned down some rough running and an unstable ideal to a bad throttle position sensor. Probing the original sensor showed erratic voltages from closed to wide open throttle, so I ordered a new TPS and installed it. Fixed everything: smoother idle, better throttle response, everything was great... until a week or so later I got a crank no start and found infinite resistance on the brand new TPS. I figured it was just another case of crap QA and took it back to the parts store for another. Thankfully the truck was in a safe place to leave it. Put another sensor in and everything was good... for another week and then again: crank no start.
At this point, subpar quality of replacement parts withstanding, I have to assume there is something else that is killing the TPS.
I'm hoping some of the vast knowledge on this forum can help me out. I'm sure the parts store will keep exchanging the dead TPS for another one... that will have to be ordered... but I'm gonna have a failure at some point somewhere that isn't safe.
Thanks for reading, I am all ears to a potential solution.
Jeremy
At this point, subpar quality of replacement parts withstanding, I have to assume there is something else that is killing the TPS.
I'm hoping some of the vast knowledge on this forum can help me out. I'm sure the parts store will keep exchanging the dead TPS for another one... that will have to be ordered... but I'm gonna have a failure at some point somewhere that isn't safe.
Thanks for reading, I am all ears to a potential solution.
Jeremy
Tuned
Joined: Sep 2015
Posts: 393
Likes: 60
From: Vermont
1997 F-350, 7.3L E4OD. I pinned down some rough running and an unstable ideal to a bad throttle position sensor. Probing the original sensor showed erratic voltages from closed to wide open throttle, so I ordered a new TPS and installed it. Fixed everything: smoother idle, better throttle response, everything was great... until a week or so later I got a crank no start and found infinite resistance on the brand new TPS. I figured it was just another case of crap QA and took it back to the parts store for another. Thankfully the truck was in a safe place to leave it. Put another sensor in and everything was good... for another week and then again: crank no start.
At this point, subpar quality of replacement parts withstanding, I have to assume there is something else that is killing the TPS.
I'm hoping some of the vast knowledge on this forum can help me out. I'm sure the parts store will keep exchanging the dead TPS for another one... that will have to be ordered... but I'm gonna have a failure at some point somewhere that isn't safe.
Thanks for reading, I am all ears to a potential solution.
Jeremy
At this point, subpar quality of replacement parts withstanding, I have to assume there is something else that is killing the TPS.
I'm hoping some of the vast knowledge on this forum can help me out. I'm sure the parts store will keep exchanging the dead TPS for another one... that will have to be ordered... but I'm gonna have a failure at some point somewhere that isn't safe.
Thanks for reading, I am all ears to a potential solution.
Jeremy
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Cross-Country
Joined: Jun 2021
Posts: 82
Likes: 49
I generally agree. Motorcraft sensors definitely perform better... when and where they're available.
Dorman is the only reputable manufacturer currently making the sensor.
I appreciate your input, but I don't believe it's a quality of part issue. I believe it is deeper than that.
Jeremy
Dorman is the only reputable manufacturer currently making the sensor.
I appreciate your input, but I don't believe it's a quality of part issue. I believe it is deeper than that.
Jeremy
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