1995 Riviera heater fan run all time even with car turned off.

dickbutler
35

Asked by Jan 05, 2008 at 08:46 AM about the 1995 Buick Riviera

Question type: Maintenance & Repair

3 Answers

littlehorn
39,275

Sounds like the resistor block or fusible link for the blower motor has fried itself open.

2 out of 2 people think this is helpful.
msvalmed
75

Check the relay, sometimes this relays get stuck.

2 out of 2 people think this is helpful.
citroens
50

Hi , my wife's 1993 Riviera did the same and locked the car and went to work, but the fan kept running draining the battery. These cars use a module in and or around the blower motor, this module consists of an STK Integrated Circuit that is just an IC and it is not a repairable item, only way to just buy one and replace it, this will fix the heater fan running all the time. It is also a circuit for the ACC (Automatic Climate control) relays signals to this Fan module that is how the fan automatically runs at speeds governed by the supply and demand of the system.

5 out of 5 people think this is helpful.

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