removal and replacement of blower motor

[andy blackmon]

Guys, I am sure there is a post someplace on this , however I can't find it. How do I remove the blower motor on the ac? I looked in all the manuals I own and did not find this. If you could tell me how to do this or where to find the information it would be a big help.
Andy Blackmon 03513

[sdg3205]

Hey Andy!

Just remove the cooling pipe and wiring harness. Should only 3 screws/bolts IIRC and it'll drop out.

[DMCMW Dave]

Hey Andy!

Just remove the cooling pipe and wiring harness. Should only 3 screws/bolts IIRC and it'll drop out.

More like 5 or 6 screws. One screw holds the ground lugs.

[DMC5180]

It might be easier if you look at the exploded view in the parts catalog. It's rather self explanatory.

1. Remove wire connections ON the motor
2. Uncouple the rubber vent hose elbow from the bottom of the housing.
3. Remove the 5 screws around the blower fan motor that hold it in the housing. Use a hand mirror so you can see the ones around the front side of the motor. It will fall out if the gasket isn't stuck.

[andy blackmon]

I looked at this and thought to myself " dang that looks easy". I have never done anything on a Delorean that was easy, this is why I doubled checked. Thanks guys.

[refugeefromcalif]

Happy birthday Andy!
Are you having a problem with the blower?

George

[andy blackmon]

To answer the question, yes I have a problem. My blower will not work on 4th speed. I have replaced the relay, upgraded the breaker and replaced the fan switch all that is left is the motor. For $25 or so I will replace the motor and see what happens next, this was not important until now but it does get hot in Al in the summer and I want all the fan speed I can have. The motor is not making noise but it is 33 years old and a replacement is not a bad thing to do.

[DMCMW Dave]

To answer the question, yes I have a problem. My blower will not work on 4th speed. I have replaced the relay, upgraded the breaker and replaced the fan switch all that is left is the motor. For $25 or so I will replace the motor and see what happens next, this was not important until now but it does get hot in Al in the summer and I want all the fan speed I can have. The motor is not making noise but it is 33 years old and a replacement is not a bad thing to do.

If it works on speeds 1-3 and not for the problem is not the motor. Speed 3 and 4 share a common fuse and breaker, so it's likely the relay or a wiring issue in the relay/breaker area.

[David T]

If it works on speeds 1-3 and not for the problem is not the motor. Speed 3 and 4 share a common fuse and breaker, so it's likely the relay or a wiring issue in the relay/breaker area.

Make sure you replaced the correct relay. You can swap the 3rd speed relay with the one for 4th speed. See if the relay clicks when you select 4th speed. If the blower motor works on all other speeds the motor is not bad. Stop throwing parts at the problem and get a voltmeter and see why you are not getting power to the motor on speed 4. You may also have a wiring problem at the mode switch (the wire for speed 4 is not connected).

[LordFly]

If it works on speeds 1-3 and not for the problem is not the motor. Speed 3 and 4 share a common fuse and breaker, so it's likely the relay or a wiring issue in the relay/breaker area.

When I got my car, the blower didn't work at all. Turns out the contacts in the speed switch were all dirty. Took the switch apart, cleaned it all up, works just fine now