Blower Motor runs constantly
#1
Blower Motor runs constantly
1988 Corvette with the C68 electronic A/C control. Is the fault possibly the 3 inch square module on the right side of the evaporator case beside the blower motor under the hood? If So where could I get one of these. Is there a blower motor relay and where would it be located? Thanks for any help with this?
#3
Team Owner
Member Since: Mar 2001
Location: Cincinnati, Oh USA
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A better description would help diagnosis. The blower control module (on top of the evaporator housing) gets a signal from the dash controller and supplies power to the blower motor. Ignition off, the blower motor should not run and if it does, the blower control module is defective.
It is normal for the blower motor to run, depending on the speed commanded by the dash controller EXCEPT when the dash controller is in OFF position.
It is normal for the blower motor to run, depending on the speed commanded by the dash controller EXCEPT when the dash controller is in OFF position.
#5
Racer
Member Since: Oct 2006
Location: Huntingdon Cambridge
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I had a similar problem with my 89.
But the blower fan ran even with the engine off & key out of ignition.
Turned out to be the blower control module fitted on top of the blower fan.
Got one off ebay $49
Description: AC blower motor power module with part numbers of #15-72561 with 16061602 on the unit.
Don't know if this helps any?
But the blower fan ran even with the engine off & key out of ignition.
Turned out to be the blower control module fitted on top of the blower fan.
Got one off ebay $49
Description: AC blower motor power module with part numbers of #15-72561 with 16061602 on the unit.
Don't know if this helps any?
#6
Burning Brakes
The blower control module is located on top of the evaporator housing. It also controls the compressor. The same module was used on all GM cars with climate control for many years. I got one at pick-n-pull for $9.00 (half price day) off a '92 cadillac. (they almost all have climate control)
#7
Blower runs constantly
All,
Thanks for all the timely feedback on this problem. I found the problem last night. I put the old module (ESC 203 (NAPA)) back in place on the right side of the evaporator case. Looking closer for a relay, I discovered the rubber hose from the back of the blower motor to the evap case was pulled off the evap case. I put it back on and the blower motor shut down. It fits a little loose so I tie wrapped it. All the blower control/speed/auto/heat works now.
Thanks Guys!!!
Thanks for all the timely feedback on this problem. I found the problem last night. I put the old module (ESC 203 (NAPA)) back in place on the right side of the evaporator case. Looking closer for a relay, I discovered the rubber hose from the back of the blower motor to the evap case was pulled off the evap case. I put it back on and the blower motor shut down. It fits a little loose so I tie wrapped it. All the blower control/speed/auto/heat works now.
Thanks Guys!!!
#8
- 1986 Original Owner -
#9
Le Mans Master
All,
Thanks for all the timely feedback on this problem. I found the problem last night. I put the old module (ESC 203 (NAPA)) back in place on the right side of the evaporator case. Looking closer for a relay, I discovered the rubber hose from the back of the blower motor to the evap case was pulled off the evap case. I put it back on and the blower motor shut down. It fits a little loose so I tie wrapped it. All the blower control/speed/auto/heat works now.
Thanks Guys!!!
Thanks for all the timely feedback on this problem. I found the problem last night. I put the old module (ESC 203 (NAPA)) back in place on the right side of the evaporator case. Looking closer for a relay, I discovered the rubber hose from the back of the blower motor to the evap case was pulled off the evap case. I put it back on and the blower motor shut down. It fits a little loose so I tie wrapped it. All the blower control/speed/auto/heat works now.
Thanks Guys!!!
#11
Hey Reggie88, give us a follow up. Did you ever find out where to get a new blower control module? I have the same problem on my 91 (climate control a/c) but I have not had any luck on finding a replacement control module.
#12
The blower control module is located on top of the evaporator housing. It also controls the compressor. The same module was used on all GM cars with climate control for many years. I got one at pick-n-pull for $9.00 (half price day) off a '92 cadillac. (they almost all have climate control)
#13
Blower runs all the time
A better description would help diagnosis. The blower control module (on top of the evaporator housing) gets a signal from the dash controller and supplies power to the blower motor. Ignition off, the blower motor should not run and if it does, the blower control module is defective.
It is normal for the blower motor to run, depending on the speed commanded by the dash controller EXCEPT when the dash controller is in OFF position.
It is normal for the blower motor to run, depending on the speed commanded by the dash controller EXCEPT when the dash controller is in OFF position.