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|  Message 1638  |
|  TOM WALKER to ROY WITT  |
|  Ow!  |
|  31 Mar 13 09:40:00  |
 RW> RW>> Mine says the same thing. It even has 4 stages of procedures to RW> RW>> check the AC system. However, it doesn't have a procedure to check RW> RW>> out why the radiator fans don't engage as the engine temps get RW> RW>> higher than normal operating temps when the PCM detects that the RW> RW>> system is low on freon. RW> TW> Since the Engine temperature function has priority so the fans should RW> TW> have run in high speed. Since it did not it indicatas either a bad RW> TW> engine block sensor, a problem with one of the Relays, or an unusual RW> TW> problem with the vehicle speed input to the PCM. RW>Since all of it works as designed with a full load of freon, I have my RW>doubts about your diagnoses. Doubt al you wabnt. But the Circuit was designed so the Engine Bloc kTemperasture has Priority and should always run the fans no mater what the other sensors dictated. IF the Fans did not run when the engine cooling water reached the Set Temp for fan activaqtion there WAS a fault in the system --- þ SLMR 2.1a þ Typo Tom strikes agaoin * Origin: Fidonet Since 1991 Join Us: www.DocsPlace.org (1:123/140) |
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