Originally Posted by Schrade
Maybe don't rush off too quickly after a device; first test power and grounds in the circuit.
BIGGEST racket in the auto industry is replacing good parts with good parts.
exempli gratia:
Mechanic, to customer, after plugging in the computer to car's ALDL:
"Computer says, DTC 'X' circuit. I can replace 'X' device, and that will probably fix it."
Customer says, "Ok", then pays, and drives off Open Loop, no SES light. 3 days later, first time Closed Loop, SES light. Back to mechanic. Mechanic says, I'll try another 'X' device, and won't charge for the device (but WILL charge labor). And he puts the good 'X' device back on the shelf.
Then it repeats ad infinitum, until customer decides to sell car, with 'Lots of new parts'.
And a corroded ground wire, that could have been fixed in 5 minutes for free, instead of wasting days back and forth to the shop, and $1,740.xx, on good parts.
Customers are dumbaces. Too busy punching buttons, passing inane non-sense on their smart device, instead of using their brains... I even fell for some dumb stuff once at the GMC dealer, WHEN I HAD THE TSB IN MY HAND!!!
Customer SHOULD have said to mechanic, "SHOW ME why you think 'X' device needs replacing".
Sir Rants-A-Lot OUT!
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You have a multimeter there Dave?
And thanks to Darryl [Dom?] for re-opening the thread...
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