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Unread 10-16-2009, 06:33 AM   #1
dustbag
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1977 CJ5 
 
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Heater blower motor

The blower motor on my 77 cj5 went out. Tried napa and auto zone, both a no go. Anyone know where I might be able to get one. It is a 360, no air.
Thanks

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Unread 10-16-2009, 08:23 AM   #2
g-love
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When these break, most people recommend the upgrade to a chevy blazer motor. See this link: Jeep Heater Blower Motor Upgrade It looks like your 77 might or might not work for this depending on where the motor is situated. I have this in my 82 cj5 and it works well.
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Unread 10-16-2009, 09:00 AM   #3
gotvenm
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Quote:
Originally Posted by g-love View Post
I have this in my 82 cj5 and it works well.
I also just did this. I could only find one replacement blower for $137 in state, so I decided to go with the $21 Chevy Blower instead.

Works Great!
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Unread 10-16-2009, 09:25 AM   #4
Mike1084
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Autozones part# PM102. $21
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Unread 10-16-2009, 10:05 AM   #5
78treehugger
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As long as the blower motor goes through the firewall you can do this upgrde.
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Unread 10-16-2009, 10:59 AM   #6
CSP
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On a '77 the blower motor is in the passenger compartment. The Blazer upgrade will not work.

There's another active thread on either a '76 or '77 heater that has a suggested replacement.
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Unread 10-16-2009, 02:00 PM   #7
78treehugger
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We were going to do upgrade on my brother's 77 CJ 7. he has the motor through the firewall, same as my 78 CJ 5. Maybe the tub was swapped with a newer box by a previous owner. The condition the jeep was in I figured it was all stock.
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1980 CJ 7--3" Black Diamond, 1" body, locked both ends, 4.56, 35x12.50x15 SS LTB, "family" cage

It's easier to get forgiveness than permision.
Salad is what food eats!!!
http://emptypocketsoffroad.org/
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Unread 10-16-2009, 02:26 PM   #8
mvigo
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for all of you who have done the blazer motor upgrade, my question is does the airflow improve dramatically for the defroster and heater? I just went through the first huge rainstorm of the year and my foggy windows reminded me of how crappy the stock system is...will I truly notice a difference? thanks in advance
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Unread 10-16-2009, 02:37 PM   #9
78treehugger
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Yes you will. It moves quite a bit more air.
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1980 CJ 7--3" Black Diamond, 1" body, locked both ends, 4.56, 35x12.50x15 SS LTB, "family" cage

It's easier to get forgiveness than permision.
Salad is what food eats!!!
http://emptypocketsoffroad.org/
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Unread 10-16-2009, 02:42 PM   #10
gotvenm
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Quote:
Originally Posted by mvigo View Post
for all of you who have done the blazer motor upgrade, my question is does the airflow improve dramatically for the defroster and heater? I just went through the first huge rainstorm of the year and my foggy windows reminded me of how crappy the stock system is...will I truly notice a difference? thanks in advance
Quote:
Originally Posted by 78treehugger View Post
Yes you will. It moves quite a bit more air.
IMHO it moves a LOT more air.

My defroster actually defrosts almost the whole window and not just the bottom inch.
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Unread 10-16-2009, 04:03 PM   #11
mvigo
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thanks, it looks like I have another project ahead of me...
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Unread 10-17-2009, 01:16 AM   #12
gojeepin
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On mine, LOW on the Blazer motor is about the same amount of air that HIGH was on the CJ motor.
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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 10-17-2009, 01:23 AM   #13
redcj576
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Quote:
Originally Posted by gojeepin View Post
On mine, LOW on the Blazer motor is about the same amount of air that HIGH was on the CJ motor.
i don't mean to steal the thread but do you have the part number of your heater motor ? thank you
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Unread 10-17-2009, 02:05 AM   #14
gojeepin
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Quote:
Originally Posted by Mike1084 View Post
Autozones part# PM102. $21
I did mine 4 years ago but I'm pretty sure I used the same part as Mike. It's a Siemens motor. Be careful though, there are two part numbers that are similar and the motor's shaft is too long on one of them (squirrel cage hits the heater box 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.

Last edited by gojeepin; 10-17-2009 at 07:11 AM..
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Unread 10-17-2009, 07:07 AM   #15
dustbag
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Thanks for the replies. My blower motor does go through the firewall, so I will be getting the blazer motor. The body is fiberglass, so enlarging the hole should not be to bad. Do you think I should replace the heater core while I'm in there?
Thanks again
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