Question about Oldsmobile 88

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Blower motor would go out intermittently along with ac and rear window defroster eventually won't come on at all replaced blower motor relay and resistor. I can jumper past blower relay but only get high speed from fan

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  • Oldsmobile Master
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They all run on the same block of fuses which means that the cause of your problem is a bad contact in the wiring of the fuse box: when, after prolonged use, the contacts get hot, one of them gets loose. 
The only way to fix that is to check the wiring and all the contacts relating to that fuse and fix the loose part.

Posted on Jun 05, 2010

  • squiddly2 Jun 05, 2010

    Then why am I able to jumper passed the blower motor relay and have the fan work?

  • Azrael SRL Jun 06, 2010

    Because the relay itself is powered from the same fuses and uses the same grounding connector. In that case then check the grounding connector first.

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