Squealing AC blower motor - ??
Thread Starter
Drifting
Joined: Oct 1999
Posts: 1,576
Likes: 0
From: Austin TX
Squealing AC blower motor - ??
When the car sits for more than a few days, the A/C blower starts up and squeals like a dog with it's foot stuck in a door. I can get it to go away by running the fan control up and down a couple times.
Sounds like a bad bearing.
Anyone have this happen, and more importantly, how involved is it to get at the blower motor for a R&R? I don't really want to be tearing the whole dash panel out for this.
F
Sounds like a bad bearing.
Anyone have this happen, and more importantly, how involved is it to get at the blower motor for a R&R? I don't really want to be tearing the whole dash panel out for this.
F
Drifting
Joined: Nov 1999
Posts: 1,502
Likes: 12
From: Yorktown Heights NY
Just did mine due to mice in the blower cage of the 1999 Red/Tan Vert I just bought:
http://forums.corvetteforum.com/show...ght=95BLKVette
It's not that difficult.
There are two plastic retainers fasteners just under the passenger side dash. You have to pull them out, then you can wiggle out the trim panel that exposes the underside of the blower.
Make sure you disconnect the battery negative cable next before you go any further.
Then disconnect the PITA two wire power connector to the blower motor.
There is also a rubber cooling tube that goes from the blower motor to the A/C plenum...remove this also.
You now only have three small metric nuts to remove on the blower unit assembly.
The blower will then come out as a unit, motor, blower cage and mounting plate.
Buy a new blower assembly, it sells wholesale for a little over $100. I know cause the dealer I purchased the car from agreed to pay for it if I put it in.
Assembly is in reverse.
BTW, I used my wifes makeup mirror so I wouldn't have to work upside down
Good luck.
http://forums.corvetteforum.com/show...ght=95BLKVette
It's not that difficult.
There are two plastic retainers fasteners just under the passenger side dash. You have to pull them out, then you can wiggle out the trim panel that exposes the underside of the blower.
Make sure you disconnect the battery negative cable next before you go any further.
Then disconnect the PITA two wire power connector to the blower motor.
There is also a rubber cooling tube that goes from the blower motor to the A/C plenum...remove this also.
You now only have three small metric nuts to remove on the blower unit assembly.
The blower will then come out as a unit, motor, blower cage and mounting plate.
Buy a new blower assembly, it sells wholesale for a little over $100. I know cause the dealer I purchased the car from agreed to pay for it if I put it in.
Assembly is in reverse.
BTW, I used my wifes makeup mirror so I wouldn't have to work upside down
Good luck.
Last edited by 95BLKVette; Jan 10, 2005 at 08:58 PM.
Drifting
Joined: Jun 2004
Posts: 1,484
Likes: 20
From: FLORIDA
This happened to my '99.
I just removed the blower fan assembly.
I drilled very small hole in the end of the motor case where the shaft rotated and squirted a small amount of oil in it.
It now works like a charm!!!!!!!!
My blower got wet when the AC Drain tubes pluged up.
It will save you some money and it is not a hard job R&Ring the the unit.
It took me about 20 minutes to get it out of the vehicle and another 15 or so to replace it.
I just removed the blower fan assembly.
I drilled very small hole in the end of the motor case where the shaft rotated and squirted a small amount of oil in it.
It now works like a charm!!!!!!!!
My blower got wet when the AC Drain tubes pluged up.
It will save you some money and it is not a hard job R&Ring the the unit.
It took me about 20 minutes to get it out of the vehicle and another 15 or so to replace it.
Advanced
Joined: Apr 2003
Posts: 81
Likes: 1
From: Lake Alfred Florida
No doubt that it is your blower fan. Mine did the exact same thing one year ago and they (wonderful dealer experience withheld) replaced it under warranty. Makes a heckuva racket, doesn't it.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
ROJ#79
Man,,,thats exactly what I did on my 85 Corvette! It worked like a champ!!
Yea,, Make damn sure you disconnect that battery!! If the motor case is grounded as you remove it, that fan will TEAR YOU UP!
It will go from 0-1740 rpm in less than 4.3 sec!!! 
Bill C
Man,,,thats exactly what I did on my 85 Corvette! It worked like a champ!!
Yea,, Make damn sure you disconnect that battery!! If the motor case is grounded as you remove it, that fan will TEAR YOU UP!
It will go from 0-1740 rpm in less than 4.3 sec!!! Bill C
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Race Director
Joined: Dec 2002
Posts: 10,233
Likes: 21
From: Baltimore suburbs Maryland
Originally Posted by ROJ#79
This happened to my '99.
I just removed the blower fan assembly.
I drilled very small hole in the end of the motor case where the shaft rotated and squirted a small amount of oil in it.
It now works like a charm!!!!!!!!
My blower got wet when the AC Drain tubes pluged up.
It will save you some money and it is not a hard job R&Ring the the unit.
It took me about 20 minutes to get it out of the vehicle and another 15 or so to replace it.
I just removed the blower fan assembly.
I drilled very small hole in the end of the motor case where the shaft rotated and squirted a small amount of oil in it.
It now works like a charm!!!!!!!!
My blower got wet when the AC Drain tubes pluged up.
It will save you some money and it is not a hard job R&Ring the the unit.
It took me about 20 minutes to get it out of the vehicle and another 15 or so to replace it.
Did you drill this hole on where the "bottom" of the shaft would otherwise be? My chirps a little at the lowest speed. I oepened it up to find leaves in there, but it still chirps. What kind of grease? WD40 or PB blaster I feel would wear out too quickly...
Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
This is only when the A/C is on or whenever the blower motor is running?
My blower motor makes a faint cooing sound, like a pigeon is the only way I can describe it. The sound goes away when I shut off the A/C.
My blower motor makes a faint cooing sound, like a pigeon is the only way I can describe it. The sound goes away when I shut off the A/C.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
There is a small well area on the bottom of the motor that encases the bottom of the shaft and the lower half of the motor bronze bearing. I used a drill bit the exact sane size as the red straw on a can of WD-40 and drilled a hole in the end of the housing. Use a drill stop and do not drill very deep. it only takes a few thousands to go through themetal. Then I fould some light machine oil in an airosol can and sprayed some light machine oil in the hole.
WD-40 or penatrating oil has solvents in it which will allow it to evaporate and will not last long as a lubricant. I also put a drop or two on the other end of the motor where the shaft exits the housing.
Swipe some of wour wifes sewing machine oil and that should take care of the issue.
WD-40 or penatrating oil has solvents in it which will allow it to evaporate and will not last long as a lubricant. I also put a drop or two on the other end of the motor where the shaft exits the housing.
Swipe some of wour wifes sewing machine oil and that should take care of the issue.
