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Your choices are limited....
Posted by George (more from George) on Sun, 4 Jul 2004 10:43:29
In Reply to: Best ECU PN for upgrade? 97 Auto Cs LPT to FPT, Peter T, Sat, 3 Jul 2004 13:40:03
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Due to a wiring change in '97 the pre '97 ECUs won't work in a '97 without some modification to the wiring. The reverse is not true: '97 ECUs will work in a '96.
When I put a '96 Aero ECU in my '97 CS I got base boost and a CEL for 'Bad or missing Evap purge valve'. The factory wiring diagram shows no change in the wiring between '96 and '97, but that is just dead wrong.
Luckily I have a '96 and '97 as well as an ohm meter, lots of patience and a wife willing to watch two high end sedans dismantled for the sake of science.
In the end I took the '96 Aero ECU apart and soldered a wire between two pins on the ECU coonnector and everything worked fine afterwards.
posted by 67.125.7...
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