Question about 1995 Buick LeSabre
Hi, it sounds like an electrical/sensor problem.
In general terms you have two primary switches that will trigger the fan to run. The first is the temperature sensor, the latter is the air conditioning electrics. You may have a bad sensor, or relay somewhere in the electrical lines that run power to the fan.
If you don't have them, get a decent electical multitester and a copy of the Hayne's/Chilton's manual for the car (both good investments in general). Work your way across the circuit for the fan motor. In specific, test the relays and temperature sensors to make sure they are not fused open.
Your electrical diagnostics will tell you what to replace.
Posted on Aug 03, 2010
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Posted on Jan 02, 2017
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