Removing, Lubing / Fixing a Blower Motor
Posted: Sun May 19, 2019 12:23 pm
The discussion thread is located here.
viewtopic.php?f=15&t=16699
BLOWER MOTOR ISSUES.
BACKGROUND INFORMATION / CAUSES.
MECHANICAL ISSUES. -
Motor bearings getting dry / stiff.
Symptoms of a blower motor about to die due to duff bearings.
1 - Most obvious is a continual howl, screach or generally loud noise coming from the blower motor.
2 - The fan sounds slow or sluggish.
3 - The fan randomly decides not to run, but usually after a cold start or standing.
My issue was that I had an intermittent chirping noise for just a few seconds, normally on a cold start.
(This could easily be confused with a slipping alternator drive belt if you have the older style 'V' belt.
Later cars had a sprung tensioner and multi-vee flat drive belt and will only make a noise if one of the pulley bearings are worn).
If left unattended, the noise gets rougher or louder and the motor eventually seizes up due to dry bearings.
The most appropriate "fix" is to replace the whole blower motor assembly, but this is hugely expensive.
An almost free fix is detailed below, however this is not guaranteed to solve your issue, depending on how bad yours has managed to get.
viewtopic.php?f=15&t=16699
BLOWER MOTOR ISSUES.
BACKGROUND INFORMATION / CAUSES.
MECHANICAL ISSUES. -
Motor bearings getting dry / stiff.
Symptoms of a blower motor about to die due to duff bearings.
1 - Most obvious is a continual howl, screach or generally loud noise coming from the blower motor.
2 - The fan sounds slow or sluggish.
3 - The fan randomly decides not to run, but usually after a cold start or standing.
My issue was that I had an intermittent chirping noise for just a few seconds, normally on a cold start.
(This could easily be confused with a slipping alternator drive belt if you have the older style 'V' belt.
Later cars had a sprung tensioner and multi-vee flat drive belt and will only make a noise if one of the pulley bearings are worn).
If left unattended, the noise gets rougher or louder and the motor eventually seizes up due to dry bearings.
The most appropriate "fix" is to replace the whole blower motor assembly, but this is hugely expensive.
An almost free fix is detailed below, however this is not guaranteed to solve your issue, depending on how bad yours has managed to get.