A/C Blower Motor Puzzle
Thread Starter
Racer
Joined: Dec 2004
Posts: 470
Likes: 0
From: Phoenix Arizona
A/C Blower Motor Puzzle
'90 vert, as stated previously A/C blower motor stopped, no codes on the C68. Yesterday and today the oddest thing happened, driving down the street hit the accelerator WOT for 10 seconds each time the blower kicked on, when I slowed down the A/C continued to blow cool air until I shut the car off. Restart the car no blower motor I feel cool air only on bi-level, however on Auto nothing unless WOT.
Go Figure..............................:ack :
Go Figure..............................:ack :
Last edited by jghmczo6; Sep 19, 2007 at 12:34 AM. Reason: 10 seconds
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
A common problem with blower motors is the brushes wear out and no longer make good contact.
If the commutator stops on a section where the brushes are not making contact, it may not start.
However, if you hit the motor with your hand and it takes off, it is because you jolted the brushes into making contact.
Once the motor is runnng, it will "coast" over the bad spots and keep on running.
The other common problem is vacuum hose problems.
Most of the controls are caused by electronics controlling vacuum motors.
If there is a vacuum leak, the electronic controls do their job, but the vacuum motors don't.
Tom Piper
If the commutator stops on a section where the brushes are not making contact, it may not start.
However, if you hit the motor with your hand and it takes off, it is because you jolted the brushes into making contact.
Once the motor is runnng, it will "coast" over the bad spots and keep on running.
The other common problem is vacuum hose problems.
Most of the controls are caused by electronics controlling vacuum motors.
If there is a vacuum leak, the electronic controls do their job, but the vacuum motors don't.
Tom Piper
Last edited by Tom Piper; Sep 19, 2007 at 08:49 AM.
