Re: Limp Mode P0641 Code - Any Ideas? - Saab 9-3SS Bulletin Board - Saabnet.com
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Re: Limp Mode P0641 Code - Any Ideas?
Posted by Alex Wolgamott [Email] (more from Alex Wolgamott) on Sat, 19 Jan 2008 21:51:14
In Reply to: Re: Limp Mode P0641 Code - Any Ideas?, SWEDECAR
[Profile/Gallery]
, Sat, 19 Jan 2008 11:00:48
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The code was retrieved using a Tech 2 at a GM dealership, so I think it is probably valid. Today I disconnected all of those sensors and checked for the 5 volts at each one. The AC sensor only had it one time, so I disassemble the wire loom and traced wires from the sensor to the ECM, no shorts, no breaks and there was continuity on the wire. Finally disconnected the connector at the ECM to check for corrosion, it was fine. Re-assemble everything, disconnected the battery for about 30 minutes and the went for a test drive. After a few miles and on-off cycles, everything returned to normal and the car ran great. Drove around for about an hour and then took it to the car wash and when I drove out, the CEL came on again and it went back in to limp-mode. I'm beginnning to think maybe the problem is moisture related? Parked it inside tonight and disconnected the battery, will see what happens tomorrow.
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