Throttle Position Sensor
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Joined: Mar 2007
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From: Manor, TX (Outside of Austin)
RE: Throttle Position Sensor
Several symptoms that I am aware of are:
1) Car is hard to start when cold followed by a rough idle.
2) Bucking can occur through certain RPM ranges
3) A searching, up and downidle. And
4) Stalling when you let off the gas, especially if you do it quickly.
There may be more, but those are the ones Iknow about.
1) Car is hard to start when cold followed by a rough idle.
2) Bucking can occur through certain RPM ranges
3) A searching, up and downidle. And
4) Stalling when you let off the gas, especially if you do it quickly.
There may be more, but those are the ones Iknow about.
Super Moderator
Joined: Mar 2007
Posts: 8,666
Likes: 0
From: Manor, TX (Outside of Austin)
RE: Throttle Position Sensor
To diagnose you will need a volt-ohm meter ($7 @ Radio Shack or others.) Set the meter to Ohms. Disconnect the plug and connect the probes to the TPS. Have someone SLOWLY depress the gas pedal.The meter needle or gauge shoulddrop slowly. Look for any drop outs (0 resistance points,) or jumps and spikes in the meter.
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Joined: Mar 2007
Posts: 8,666
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From: Manor, TX (Outside of Austin)
RE: Throttle Position Sensor
Well, that answer came so long ago (in forum terms) that I forgot about it. Glad it could be of some help to someone. Welcome to the club, hotwhiz!!
On a side note though: I do not consider myself an expert on TPS"s, but know that they are basically a potentiometer and should act like one. I haven"t seen one yet that wasn"t easy to swap out either.
Good Luck!!
On a side note though: I do not consider myself an expert on TPS"s, but know that they are basically a potentiometer and should act like one. I haven"t seen one yet that wasn"t easy to swap out either.
Good Luck!!
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