1999 Chevy Cavalier blower motor

GREGGOR

MEMBER
1999 CHEVROLET CAVALIER
4 CYL
FWD
AUTOMATIC
165,000 MILES

No power to blower motor and the fuse are ok. Need to know what to check next. The resistor, switch or what.

Wednesday, December 23rd, 2009 AT 10:31 AM

5 Replies

JDL

MECHANIC
16,098 POSTS

Did you check the circuits at the blower motor relay? In the PDC under the hood. Pull the relay, use testlite on the terminals, key on, hvac on, Should be two hot termials. There are two fuses to check, also use a testlite on the fuse circuit, to see if the circuit is hot. Hvac fuse-10 amp, goes hot when you turn on the key. Blow fuse 30 amp, in pdc under the hood, hot all time.

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Wednesday, December 23rd, 2009 AT 10:52 AM

GREGGOR

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8 POSTS

I have checked fuses and are ok. Need to know what to go to next

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Wednesday, December 23rd, 2009 AT 11:04 AM

JDL

MECHANIC
16,098 POSTS

I've already told you what to check, humor me. I don't care if the fuse is good, if there is no voltage on the fuse circuit, the circuit is dead. Did you do any testing at the blower relay? Maybe somebody else could help you better, have a nice day.

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Wednesday, December 23rd, 2009 AT 12:42 PM

NEEDADVICEBILL

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1 POST

If there is no power to the ac fuse does this mean the relay is bad?

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Sunday, December 27th, 2009 AT 3:23 PM

JDL

MECHANIC
16,098 POSTS

Hi, are we talking about the same vehicle? If so, the hvac fuse supplies voltage to the hvac control assembly. The blow fuse supplies voltage to the load side of relay. If no votage at fuse, have to backtrack the fuse circuit, the relay wouldn't cause that.