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Unread 10-04-2011, 06:50 PM   #1
batmn77
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1982 CJ7 
 
Join Date: Jan 2011
Location: JAX, Florida
Posts: 274
Blazer Heater Mod Help!?

I put the upgraded heater motor in the jeep. Hooked everything up and I get nothing when I turn the fan switch on. The only thing that happens when I turn it on is that the volt meter drops down to like 10 volts, and then when I turn it on high it drops to all the way and if I keep the switch on the fuse eventually blows. The motor is not turning on. I ran a wire from the motor straight to the battery to see if it would turn on and it did not. The 12ga jumper wire got extremely hot.

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Car History from 1st to Present:
-1997 Mustang V6 (Sold); -1999 Chevrolet Blazer (Sold); -2001 Chevrolet Silverado Z71 (Sold); -1999 Chevrolet Z28 Camaro; 1982 Jeep CJ-7
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Unread 10-04-2011, 06:56 PM   #2
gojeepin
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1983 CJ7 
 
Join Date: Feb 2006
Location: Riverview, Florida
Posts: 3,441
Did you get the motor with the right shaft length? There are two that look the same but the shaft on one of them is longer. Your squirrel cage may be stuck on the housing.
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Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 10-04-2011, 07:03 PM   #3
batmn77
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1982 CJ7 
 
Join Date: Jan 2011
Location: JAX, Florida
Posts: 274
i bought the pm102. that's what i was told to use for a jeep with a factory a/c.
__________________
They Cant Stop Me, Even If They Stopped Me.
Car History from 1st to Present:
-1997 Mustang V6 (Sold); -1999 Chevrolet Blazer (Sold); -2001 Chevrolet Silverado Z71 (Sold); -1999 Chevrolet Z28 Camaro; 1982 Jeep CJ-7
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Unread 10-04-2011, 07:19 PM   #4
chet44
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1985 CJ7 
 
Join Date: Oct 2008
Location: Northeastern Illinois
Posts: 1,237
Sounds like your squirrel cage is binding. I had to put mine in twice for that.
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Unread 10-04-2011, 09:20 PM   #5
gojeepin
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1983 CJ7 
 
Join Date: Feb 2006
Location: Riverview, Florida
Posts: 3,441
Quote:
Originally Posted by batmn77 View Post
i bought the pm102. that's what i was told to use for a jeep with a factory a/c.
Some members have found out the hard way that the model PM102 is sometimes mislabeled or just a variant is put in the wrong box.

Does the squirrel cage spin freely by hand?
__________________
Vibration? Bump steer? Wandering? Read: Steering, suspension, and driveline basics. An article on how it works and where to look for problems.

83 CJ7, 4.1L 6cyl (4.0L bored .030" over), 35" tires, T-5 transmission, Dana 300 TC, Trussed AMC 20.
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Unread 10-05-2011, 04:24 AM   #6
Erik719
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1983 CJ7 
 
Join Date: May 2008
Location: Alexandria, VA
Posts: 571
So what is the correct length of the shaft?
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