Blower fan only works on high.
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My 1990 Bonneville blower fan only works in the high position, and it doesn't take long for me to get too hot with the heater going full blast. Do I have a bad relay somewhere? I would appreciate help of any kind.
HeyU
HeyU
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HeyU, My FSM says to run what they call a "Blower Feedback Test".
Measure Resistance at Heater and A/C Control Assembly Connector (Disconnected)
Ignition Switch must be OFF.
Connect a fused jumper across Blower Motor connector terminals A & B
Measure Between L(PPL) & Ground
Correct Resistance should be less than 3 ohms.
Check Relay Center Fuse 1, PPL (65) wire and ORN (761) fir an open or short to ground.
If Resistance is correct, check GRY/BLK (754) wires for short to Battery. If wire is OK, replace Heater and A/C Control Assembly.
BUT, This info is from my 91 Olds FSM. Although our cars are kiss'n cuz'ns. Things are not necessarily the same. I'm sure the Electrical Guru'* will give you additional info on your problem. Good Luck.
Oh, and Welcome to the Bonneville Club.
Measure Resistance at Heater and A/C Control Assembly Connector (Disconnected)
Ignition Switch must be OFF.
Connect a fused jumper across Blower Motor connector terminals A & B
Measure Between L(PPL) & Ground
Correct Resistance should be less than 3 ohms.
Check Relay Center Fuse 1, PPL (65) wire and ORN (761) fir an open or short to ground.
If Resistance is correct, check GRY/BLK (754) wires for short to Battery. If wire is OK, replace Heater and A/C Control Assembly.
BUT, This info is from my 91 Olds FSM. Although our cars are kiss'n cuz'ns. Things are not necessarily the same. I'm sure the Electrical Guru'* will give you additional info on your problem. Good Luck.
Oh, and Welcome to the Bonneville Club.
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vital49
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12-11-2007 10:46 PM