There are a number of things. The car may idle to fast or too slow. The car may have momentary hesitation (jumps/fades) when driving. Most will eventually set a Check Engine code that will point to the TPS. the hesitation one may not though. That usually occurs when you have long commutes at steady speeds. This causes excessive wear of the TPS in one area and can cause intermittent dropouts. If you suspect this, try driving at steady speed 5-10 mpg SLOWER than usual and if the problem goes away that is probably the cause.
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There are a number of things. The car may idle to fast or too slow. The car may have momentary hesitation (jumps/fades) when driving. Most will eventually set a Check Engine code that will point to the TPS. the hesitation one may not though. That usually occurs when you have long commutes at steady speeds. This causes excessive wear of the TPS in one area and can cause intermittent dropouts. If you suspect this, try driving at steady speed 5-10 mpg SLOWER than usual and if the problem goes away that is probably the cause.