Erratic Blower Motor Operation
#1
Member
Posts like a V-Tak
Thread Starter
Join Date: Jun 2005
Location: Littleton, CO
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
Erratic Blower Motor Operation
I've been having trouble with my 95 SSEi, and the blower motor for the A/C working intermittantly. I think I've discovered the solution by reading other similar posts, but mine also does 2 other things that I haven't seen addressed so I thought I ask all of you for possible ideas for a solution.
On many occasions when the A/C has decided to work, it starts out blowing on high just like it should. As I drive, the air output will get slower and slower till the point where cold air is just barely coming in but the A/C controller still says it'* on high. Would this still be just the blower motor?
The other thing it does is it will be blowing on high, and sometimes when I deccelerate the air output will stop and once I accelerate again, it comes back on again. What could be causing this?
Thanks in advance.
On many occasions when the A/C has decided to work, it starts out blowing on high just like it should. As I drive, the air output will get slower and slower till the point where cold air is just barely coming in but the A/C controller still says it'* on high. Would this still be just the blower motor?
The other thing it does is it will be blowing on high, and sometimes when I deccelerate the air output will stop and once I accelerate again, it comes back on again. What could be causing this?
Thanks in advance.
#2
Member
Posts like a V-Tak
Join Date: Aug 2005
Location: Central NJ
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Re: Erratic Blower Motor Operation
Originally Posted by ColoBonne
I've been having trouble with my 95 SSEi, and the blower motor for the A/C working intermittantly. I think I've discovered the solution by reading other similar posts, but mine also does 2 other things that I haven't seen addressed so I thought I ask all of you for possible ideas for a solution.
On many occasions when the A/C has decided to work, it starts out blowing on high just like it should. As I drive, the air output will get slower and slower till the point where cold air is just barely coming in but the A/C controller still says it'* on high. Would this still be just the blower motor?
On many occasions when the A/C has decided to work, it starts out blowing on high just like it should. As I drive, the air output will get slower and slower till the point where cold air is just barely coming in but the A/C controller still says it'* on high. Would this still be just the blower motor?
The only thing that forces airflow thru the vents is the squirrel cage blower.
The blower is (of course) powered by the blower motor, and it'* shaft, rides on lubricated bushings.
The cage itself is usually bulletproof, unless it'* been in a collision.
That leaves the motor, and the bushings.
Starting with the easiest.... the lubrication gets dirty and sometimes,
will stick, or cause excessive drag on the shaft, slowing it down.
The other thing it does is it will be blowing on high, and sometimes when I deccelerate the air output will stop and once I accelerate again, it comes back on again. What could be causing this?
Thanks in advance.
Thanks in advance.
#5
Senior Member
True Car Nut
Join Date: Aug 2003
Location: Salina, KS
Posts: 5,246
Likes: 0
Received 0 Likes
on
0 Posts
First and foremost, make sure you have done the Evap cleaning found here:
http://www.bonnevilleclub.com/techinfo/?article=62
to be sure that there is no blockage.
Then make sure you have done other diagnostics mentioned in Techinfo (top of the screen). If you can pull any codes at all from the Climate Control, that would be ideal for us.
Err..do you have automatic climate control in your car?
http://www.bonnevilleclub.com/techinfo/?article=62
to be sure that there is no blockage.
Then make sure you have done other diagnostics mentioned in Techinfo (top of the screen). If you can pull any codes at all from the Climate Control, that would be ideal for us.
Err..do you have automatic climate control in your car?
#6
Member
Posts like a V-Tak
Thread Starter
Join Date: Jun 2005
Location: Littleton, CO
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
Erratic Blower Motor Operation
Oops, sorry about that guys, I should have mentioned that I do have Automatic Climate Control.
Thanks for all the help. I'll be taking the blower motor out this weekend. Let you know what I find, and if it fixes the problem.
Thanks for all the help. I'll be taking the blower motor out this weekend. Let you know what I find, and if it fixes the problem.
#7
Senior Member
True Car Nut
Join Date: Oct 2002
Location: Groton, CT _NEBF 05, 06, 07_
Posts: 2,703
Likes: 0
Received 0 Likes
on
0 Posts
Your evaporator coil isn't freezing up, is it? That would be the sign of a low refrigerant charge & would cause restricted air flow across the evap coil.
#8
Senior Member
True Car Nut
If there were a blockage of the evap core, wouldn't you think that the airflow would be constantly blocked rather than intermittent as described?
The next time this happens, check to see if the airflow is being directed to the defroster vents rather than the dash vents as indicated on the ECC head. This would indicate a vacuum loss. Usually, this is caused by a disconnected vacuum line at the vacuum tank but could also be further down the line.
Please verify if the air flow is being directed to the defroster vents.
it starts out blowing on high just like it should. As I drive, the air output will get slower and slower till the point where cold air is just barely coming in
Please verify if the air flow is being directed to the defroster vents.
Thread
Thread Starter
Forum
Replies
Last Post
Pepin
Everything Electrical & Electronic
4
07-25-2011 04:00 PM