Ok, today I went and pick up a new blower motor because my other one was shot. To make a long story short I put it in and it didn't work. So I went back under the hood and wiggled the wires to see if that would fix it. It didn't so I thought maybe my switch is bad. So I got a volt meter and there was around 7.8 volts at the first three positions and nothing at the 4th (fastest) position. My question is, what should the volts be at and what determines the speed of the motor. I tried to figure this out my self and I went to my dads truck to see what his fan was running at. His varied from 12.3 at the lowest position to 12.5 at the highest. I wouldn't think that .2 volts would make the fan turn at a different RPM. Also I heard a clicking noise coming from a relay or a seloniod near the fan, everytime we changed speeds on the motor it would click. So I guess I couldn't answer my own question with my dads truck. So can you guys please help me!! Any other ideas on how to diagnose/fix my problem would be great.

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yellow 86 Camaro
LG4 700R4
Pioneer head unit
Kenwood speakers
Infinity Beta Digital 300 amp
2 Infinity Perfect 12s

[This message has been edited by matthew (edited January 02, 2001).]

 

The only help I can offer is take it back and make sure the parts store gave you the right one. I had to exchange mine twice because they gave me the wrong one. The first time the motor had no high setting, and the second time it only had two speeds. Sorry, that is the only thing I can think of (since I know nothing of the voltage issue).

Vman

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1969 Camaro
383, Corvette heads, 700R4
Resto is in progress

1988 Toyota 4-Runner
aka the Parts Hauler

Previous owner of an 89 RS Camaro
2.8L V6, 700R4

 

even if mine had one speed I would be happy. Its not even moving now.

 

Did you try to replace the resistor block?sometimes this works,also check behind the control assembly there is a small slide switch where the wires hook up,sometimes this shorts out,this is what happen on mine.