blower motor control - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Everything Electrical & Electronic Have an electrical problem? Lighting, Alternators, gauges, DIC, HUD, etc? Post it here. Please post Audio problems in the Audio forum, and Engine control problems in the appropriate Mechanical forum for your year.

Reply
 
 
 
Thread Tools Search this Thread
Old 03-27-2008, 12:01 PM   #1
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jul 2006
Posts: 157
Thanks: 0
Thanked 0 Times in 0 Posts
wintboy is on a distinguished road
Default blower motor control

ok so i have noticed weird operation of my blower motor. Here is whats going on.... If i leave the ecc on 90* the blower motor will start even before the car is warm blowing cold air. If i leave it on auto at about 74* the blower motor will turn on when it is supposed after the car is warm when i first start it in the morning but if i park somewhere for a little while the blower will not turn back on and it usually wont for 15-20 minutes and there doesnt seem to be anything that triggers it to turn back on. I had read that the blower control module could be bad from another thread that i saw a couple of days ago, so i went and pulled one from out local u pull r parts from a 93 ssei. My question is will it work in mine. Essentially it should be same system but since the car i pulled it from had a different ecc im wondering if it would work but my thinking is it should since all it does is control the fan operation but then again the plugs may be different. I got it for $4 so i think im gonna try swapping them but if anyone knows it wont work for sure i dont want to bother with even thought it really isnt that hard.
wintboy is offline   Reply With Quote
Old 03-27-2008, 01:48 PM   #2
Senior Member
True Car Nut
 
Join Date: Dec 2003
Location: Corn Fields, IN
Posts: 2,766
Thanks: 0
Thanked 0 Times in 0 Posts
John Deere Boy is on a distinguished road
Default

The reason the blower comes on when the car is still cold when you have it set on 90* is because the 90* setting disables the automatic control and calls for full heat. Same thing with 60*, which calls for full cooling.

I dunno about the 93-95 compatability, but i'd say if the plugs match, give it a try. While you have the BCM out, take a look inside the heater box, and if it'* dirty, clean it out with brake parts cleaner and water. There'* a techinfo article about this.
John Deere Boy is offline   Reply With Quote
Old 03-28-2008, 01:29 AM   #3
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Jul 2006
Posts: 157
Thanks: 0
Thanked 0 Times in 0 Posts
wintboy is on a distinguished road
Default

oh i had never noticed that commanding full hot or cold overrode it. i usually set it at 74* and leave it. The reason i had suspected this was because in the last thread somebody posted it was draining their battery and two times this week i have went to my car and had a completely dead battery. I changed it out and the plugs and everything were the same. I havent really noticed a difference though. I guess we will find out.
wintboy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
blower motor-manual control 97BONNIESE Everything Electrical & Electronic 11 06-21-2012 08:50 PM
Cause of bad blower motor control module? Blower motor stays on. 1995 Park Avenue. Pepin Everything Electrical & Electronic 4 07-25-2011 05:00 PM
Blower Motor Control Module...Where is it? f1ken 1992-1999 2 08-14-2008 09:03 AM
Blower Control Module & Blower Resistor, Where are they hunter2423 1992-1999 7 05-11-2007 08:53 PM
Blower Motor Issues - Dead Motor??? corder13 1992-1999 10 02-14-2006 12:13 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 08:22 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.