tps sensor

[GUY L]

how do i know when my tps is gone.

 

[shojuan]

Crap, mine had 148,000 miles on it and it still wasn't "gone". However, I think the wisdom is that the output starts to decline with age. These are, after all, mechanical potentiometers. There *is* a wearing surface. If your car is really old (mines 13 years and I finally replaced mine because I was doing my 60K service) but runs more or less fine, then it's up to whether you want to spend $30-$40 for a replacement TPS to hopefully optimize performance. If you're having some other problem that could be a TPS problem (there are some shoforum members who have had the TPS, even new ones, go bad. Ask Robby, centaurus3200) then the $30 is money well spent to try to solve the problem, IMO.

Rick

 

[sdpatt]

You know for sure it is gone when the TPS's EEC code shows up in the hard faults or memory codes during the KOEO test. Other synptoms can be abrupt engine slowing (jerking) on throttle liftoff, jerky throttle response or a flat spot off idle. You can take the sensor off while parked at AutoZone and have them hook it up to a sensor tester to make sure there are no dead spots in the windings. Mine did and it was easily replaced at a low cost.

They don't have a decreasing output over time, but they do develop dead spots where the windings may have built up corrosion from the wear. The sensor tester at AutoZone checks for continuously increasing or decreasing signal as the sensor post is rotated.

 

[shojuan]

Hey maybe I'll take my old one to Autozone just to see if it has deteriorated much!

Rick