Why does the fan stay on after I cut the engine off? 2005 chevy silverado
130

Asked by Julie Jun 01, 2016 at 08:24 PM about the 2005 Chevrolet Silverado 1500 LS Crew Cab RWD

Question type: Maintenance & Repair

Changed the coolant sensor and the relays

3 Answers
42,415

Auto_Centric answered 8 years ago

Fan(s) stay on until the engine temp is reduced to "acceptable level determined by the manufacturer. Possibly.. a RELAY, you changed the block temperature sensor that's another common issue.. So try tapping relays that are in the underhood fuse box. If the fans stop, it's a bad relay. The computer controls the cooling fans when coolant temperature exceeds approx 220°F or the air-conditioning is turned on. Make sure the BATTERY isn't old too!

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130

Julie answered 8 years ago

The fan stays running until the batteries dead.

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45,205

jamnblues answered 8 years ago

If it is running constantly, that is better than not running at all- but not good to stay on til the battery dies- there is a thermo switch in the radiator- it is probably bad-

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