I recently bought three throttle position sensors for my Olds 88 trying to get one that worked. The one from NAPA was made in Mexico, the OEM one from GM was made in Japan, and one from Autozone was made in China. None were exact duplicates of the original.
As some of ya'll know, a TPS is nothing more than a variable resistor. The problem with the one that failed on the car was that there was a spot where the wiper did not contact the resistor. The resistor itself was intact. And of the three I bought, none had the same resistance reading across the resistor as the original. The one I finally got to work was the one from NAPA, and it wouldn't adjust the way the book said it should. It took a couple of weeks of trial and error to get it adjusted right.
Imagine some uninformed young lady simply taking a car in with the same problem.
Which is a whole 'nother issue. Our local NAPA store also is part of a NAPA service facility. I can deal with the owner/manager and he'll be fair and square. If my wife takes her mini-van in for an oil change, he immediately tries to sell her as much as a thousand dollars worth of stuff the van doesn't need. It's like as soon as he's dealing with a woman, he goes into an instant oversell mode.
I've been quoted in print as saying that everything negative and derogatory that's ever been said about the auto repair business has been grossly understated.
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