Throttle Position Sensor?
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Joined: Dec 2002
Posts: 18
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Throttle Position Sensor?
Last week, my check engine light lit, and my engine would stutter a bit when pressing the accelerator down hard. It almost felt like the engine wasn't getting any gas.
I had the vehicle serviced, and the mechanic told me that the barometric pressure sensor was bad. He replaced it, the check engine light when out, and the truck ran perfectly.
This week, the check engine light lit again, and the problem was worse than it was before. I wanted to check the plugs, but couldn't easily get to them. In so doing, I disconnected the negative battery terminal, clearing the OBD computer.
Today, a snowstorm hit. I decided to chance driving my truck for the 4WD over this old, borrowed sedan. I never pressed the accelerator hard, and never went over 2500 RPM. The check engine light is on, but I didn't have any problems with the engine. Could the problem be the throttle position sensor?
I have a 95 STX, 4.0 engine.
I had the vehicle serviced, and the mechanic told me that the barometric pressure sensor was bad. He replaced it, the check engine light when out, and the truck ran perfectly.
This week, the check engine light lit again, and the problem was worse than it was before. I wanted to check the plugs, but couldn't easily get to them. In so doing, I disconnected the negative battery terminal, clearing the OBD computer.
Today, a snowstorm hit. I decided to chance driving my truck for the 4WD over this old, borrowed sedan. I never pressed the accelerator hard, and never went over 2500 RPM. The check engine light is on, but I didn't have any problems with the engine. Could the problem be the throttle position sensor?
I have a 95 STX, 4.0 engine.
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Joined: Sep 2001
Posts: 30,255
Likes: 37
Throttle Position Sensor?
Almost any sensor can be at fault. Get an OEM manual and go thru the troubleshooting proceedure they recommend. The first sensor that was found to be out of spec was replaced in the hope that would take care of the problem. Unfortunately in this case it did not.
There are not enough sensors to properly self diagnose these systems. The control unit programming is not "robust" enough to figure out if sensors are out of tolerance. The ECU will hide many "problems" in an engine until total failure occurs. I love the reliability of the new electronic controls but I hate them at the same time... Is this a Love-Hate relationship?
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There are not enough sensors to properly self diagnose these systems. The control unit programming is not "robust" enough to figure out if sensors are out of tolerance. The ECU will hide many "problems" in an engine until total failure occurs. I love the reliability of the new electronic controls but I hate them at the same time... Is this a Love-Hate relationship?
Thanks for using FTE!
[font color=red]As a Moderator I do not "Subscribe" to most topics,
please send email/pm if you need a reply -Thanks![/font]
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