Blowing air conditioner relay

Tiny
PHREDDY
  • MEMBER
  • 1994 BUICK LESABRE
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 130,000 MILES
My air conditioner will work on every speed but high. I replaced the air conditioner relay under the hood, but it blew again after a week.
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Sunday, July 10th, 2016 AT 1:58 PM

11 Replies

Tiny
WRENCHTECH
  • MEMBER
Check fuse #3 in the under hood fuse box (30amp).
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Sunday, July 10th, 2016 AT 5:05 PM
Tiny
PHREDDY
  • MEMBER
I did check those fuses and they were good.
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Sunday, July 10th, 2016 AT 5:08 PM
Tiny
WRENCHTECH
  • MEMBER
Test for power and ground at the motor and see which one is missing.
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Sunday, July 10th, 2016 AT 5:09 PM
Tiny
PHREDDY
  • MEMBER
All working
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Thursday, July 14th, 2016 AT 5:05 PM
Tiny
WRENCHTECH
  • MEMBER
OK, so if you have both power and ground at the motor, you have a bad motor.
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Thursday, July 14th, 2016 AT 5:06 PM
Tiny
PHREDDY
  • MEMBER
But the motor works on every speed but high and something is causing the relay to blow on high
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Thursday, July 14th, 2016 AT 5:10 PM
Tiny
WRENCHTECH
  • MEMBER
You don't "blow" relays. You have something else going on there and the circuit needs to be tested following a wiring diagram. I think your testing has been flawed from the beginning here. It looks like it's time to get some local electrical help
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Thursday, July 14th, 2016 AT 5:15 PM
Tiny
PHREDDY
  • MEMBER
According to the the auto parts store they said it BLEW and everyone in the store could SMELL it. Pin 86 on the relay burned out.
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Thursday, July 14th, 2016 AT 6:43 PM
Tiny
WRENCHTECH
  • MEMBER
If the pin overheated, the problem is with the socket, not the relay. Stop listening to people in auto parts stored. They are sales clerks and not technicians.
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Thursday, July 14th, 2016 AT 6:51 PM
Tiny
PHREDDY
  • MEMBER
Now I'm having problems with my brakes. The pedal practically goes to the floor. I pump the brakes and they catch but then goes to the floor. I check the fluid and it's full.
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Monday, July 25th, 2016 AT 8:20 AM
Tiny
WRENCHTECH
  • MEMBER
You would need to start a new question for that.
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Monday, July 25th, 2016 AT 9:55 AM

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