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e170drvr e170drvr is offline
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Join Date: Sep 2006
Location: Evansville IN
Posts: 261
Thanks Brian, I just discovered that myself. I guess the wur and aar wired together somehow and run only with the alternator producing power. I guess this would explain why the wur wasn't doing anything wouldn't it. Still can't figure out the cold control pressure being high, would the wur being powered have anything to do with cold pressure? My factory manual only describes the procedure for a 78 it seems. There was no mention of the wur not being powered on battery only. If someone had some photos of the proper way to do these tests, I sure would appreciate it. I'm sure others would find it helpful too.

Old 09-27-2007, 11:53 AM
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