13 volts coming threw plug at all times even when all controls are off. Tested blower motor by jumping it directly to battery and blower motor runs in high speed.
Blower resister bad
Testimonial: "He nailed it on the head. It was the resister. Many thanks"
Thanks You and with resister bad it will still allow 13 volts to come into plug. I will try resister and let you know. Thank you again.
make sure your plug to resistor is not melted or deformed, this is a common problem, the terminals get sloppy over time from voltage to where they start to ark and get hot and plastic melts and you lose ground.
if you have 13 volts to blower motor and it does'nt work then check ground and see if it is grounded. cause it takes power and ground to make a component work.
I just checked schematic, if you have automatic or manual controls, they both ground in the blower resistor, so make sure your ground is good going to resistor...disc plug and hook your meter or test light to ground and check the black wire to see if it's grounded with the plug disconnected. if using test light you have to put aligator clip on 12+power source and touch the probe end to heavy black term WITH PLUG UNHOOKED from resistor, if it lights up the ground is good. If using a meter, use continuity setting and if the ground is good the meter will zero out. Good Luck....9 times out 10 its the resistor
Thank you and I will give that a try when I get home tonight. I will let you know and again thanks for all you help.
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SOURCE: On my 1999 Buick LeSabre the blower fan does not work at all
How about checking voltage into & out of resistor for difference. Some swear by high only when resistor goes, but in past I have had intermittent use of other speeds before it finally went & I had high only.
SOURCE: 1995 buick park ave blower motor stays on
Replace your blower motor relay. It's located under the hood on the firewall passenger side.
SOURCE: blower motor doesn't run on high speed
May need a high blower relay. Under fan motor on firewall.
SOURCE: 1994 Buick Lesabre blower runs on all speeds
If you are referring to the AC blower, you may want to check on the fan switch. It could be caused by bad contacts or loose connections. There is also a resistor if you would trace the wiring of the switch to the evaporator under the dash. Check if it is still intact. It may be partially be burned.
SOURCE: 1994 lesabre, hi speed a/c motor runs all the
You need to replace the blower control module. It's about six inches from the blower motor on top of the heater case on the passenger sid of the blower motor.
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Thanks 2stokejim it was the resister that was bad.
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