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Heater and the air conditioner not working

Tiny
SHERRY HILL
  • MEMBER
  • 1998 OLDSMOBILE 88
  • 0.5L
  • 4 CYL
  • AUTOMATIC
  • 194,000 MILES
They both were working great, then it started shutting off and on when the knob is turned on. Now both want come on at all. When turn on it doesn't blow and nothing is coming out the vents.
Monday, October 19th, 2020 AT 6:06 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

This could be the blower motor or the resistor. You need to test for voltage to the blower motor when commanded to the on position. Check at the connector for voltage.

I attached pictures of the location of the components for you as well.

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

I attached a wiring diagram for you to view. You will need a test light or voltmeter to do some testing.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy
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Monday, October 19th, 2020 AT 8:21 AM

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