Question about 1992 Buick Roadmaster
A/c fan motor runs after ignition is turn off.
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Posted on Jan 02, 2017
SOURCE: Buick Roadmaster radiator fan
hi Russ, it sounds like the temperature switch is bad. It is located under the hood, front engine area, driver side, end of intake manifold, mounted in the block. U should be able to test it w/ an ohmeter as follows: disconnect wiring (check for loose, corroded, etc as that could be the problem) remove temp. switch, place in an old pot w/ water on stove, w/ temp below 99 degrees, connect ohmeter to terminals, reading should be zero. Heat water to above 99 degrees, check , should read infinity. If it fails this test, it's time to replace it. Good luck, let me know how u make out Curt from Connecticut.
Posted on Mar 16, 2009
I feel there is a sort somewhere in the fan circuitry, check its fuse unit. Also ensure proper level of engine oil is present in the engine. Actually your car might be overheating because the respective fans are not powering on at the correct time, but you mentioned that these fans are in working condition so it has to on something in this circuit that is preventing completion of this circuit by their respective sensors which you have recently changed...............sodeep
Posted on May 04, 2009
on the paasenger side of the car under the dash. Remove the lower dash panel below the glove box and the module is in the duct for the heat to the far right side of the footwell.
Posted on Mar 04, 2010
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