<hr style="color: rgb(209, 209, 225);" size="1"> <div id="post_message_">I'm trying to figure out why my radiator fans dont turn on when my engine becomes hot but turn on when i turn on my ac. I have a wire running to a manual switch and positive battery cable and the light blue wire on the fan. Also i have a 95 buick lesabre. If i change out the coolant temp sensor will that make my fans turn on when the engine gets hot? also when i turn on the ac the check engine light will come on saying p1640 - qdm 1 failure & p1650 - qdm 2 failure.</div> |
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