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blower motor quit working


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pettitd1
Novice

Jul 4, 2012, 3:02 PM

Post #1 of 16 (2635 views)
blower motor quit working Sign In

My 97 Buick Lesabre, 3.8 engine 120,000 miles

I shut the car off to fill with gas. Restarted car after filling and the blower motor failed to work. No prior problems. No noise, no prior problems. Acts like a fuse is blown. I checked all three fuse locations, the owners manual does not show a blower motor fuse, HVAC fuse is not blown. Is there a breaker or relay, and where is it located. thanks for any help you can give!! thanks dan


Discretesignals
Ultimate Carjunky / Moderator
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Jul 4, 2012, 3:09 PM

Post #2 of 16 (2627 views)
Re: blower motor quit working Sign In

automatic or manual ac?





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pettitd1
Novice

Jul 4, 2012, 3:12 PM

Post #3 of 16 (2621 views)
Re: blower motor quit working Sign In

manual

In Reply To


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jul 4, 2012, 3:15 PM

Post #4 of 16 (2618 views)
Re: blower motor quit working Sign In

Probably would be a good idea to first check for power and ground to the blower motor at the blower connector. Should be easy to check on that design.

Sometimes for a quick check to see if you have a blower motor brush problem you can also try wacking on the blower motor housing with it turned on high. If the blower takes off when you wack it, you need another blower motor.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Jul 4, 2012, 3:16 PM)


pettitd1
Novice

Jul 5, 2012, 8:43 AM

Post #5 of 16 (2560 views)
Re: blower motor quit working Sign In

ok finally made it home, was out of state traveling, i rapped on the motor, but nothing happened, i just checked the voltage at the motor and there is none, i also checked the resister with all the springs on the back of it mounted in the air box and it looks ok.....so as of now, it is powerless with the key in the on position and control on high, any suggestions where to look next????


Hammer Time
Ultimate Carjunky / Moderator
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Jul 5, 2012, 8:52 AM

Post #6 of 16 (2555 views)
Re: blower motor quit working Sign In

Check the fuses indicated at the top of the diagram.






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pettitd1
Novice

Jul 5, 2012, 9:34 AM

Post #7 of 16 (2548 views)
Re: blower motor quit working Sign In

i checked all three fuses, they are good; the compressor is working, everything works except the blower motor


Hammer Time
Ultimate Carjunky / Moderator
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Jul 5, 2012, 9:41 AM

Post #8 of 16 (2541 views)
Re: blower motor quit working Sign In

Check the Blower Motor speed relay.

I would try swapping it with the horn relay.





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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jul 5, 2012, 9:48 AM)


pettitd1
Novice

Jul 5, 2012, 9:47 AM

Post #9 of 16 (2533 views)
Re: blower motor quit working Sign In

can you instruct me on how to test it please, i have a multi-meter


Hammer Time
Ultimate Carjunky / Moderator
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Jul 5, 2012, 9:58 AM

Post #10 of 16 (2527 views)
Re: blower motor quit working Sign In

Swap it with the horn relay if they look the same.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



pettitd1
Novice

Jul 5, 2012, 10:18 AM

Post #11 of 16 (2522 views)
Re: blower motor quit working Sign In

swapped the horn relay with speed relay horn works fine, no blower yet; i see there is a blower relay also, but there is not a relay to swap with it has five pins, is there any way to check it???


(This post was edited by pettitd1 on Jul 5, 2012, 10:22 AM)


Hammer Time
Ultimate Carjunky / Moderator
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Jul 5, 2012, 11:19 AM

Post #12 of 16 (2508 views)
Re: blower motor quit working Sign In

OK, now you need to go back and redo all your testing because you have done something wrong. These results aren't possible.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



pettitd1
Novice

Jul 5, 2012, 11:30 AM

Post #13 of 16 (2502 views)
Re: blower motor quit working Sign In

I took the 5 prong blower relay out and replaced it with a new one and, THE PROBLEM IS FIXED. I took a chance because everything else checked as good. Thank you for all your help and taking the time to show me diagrams, could not have done it with out your help. I told the guys at Auto Zone about CarJunky.com and highly recommend its use.

thanks again
Dan P


Hammer Time
Ultimate Carjunky / Moderator
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Jul 5, 2012, 11:58 AM

Post #14 of 16 (2496 views)
Re: blower motor quit working Sign In

Not possible either. The way this is wired, if that relay was bad, you would have had all speeds but high so your answers are still wrong.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
Ultimate Carjunky / Moderator
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Jul 5, 2012, 12:23 PM

Post #15 of 16 (2488 views)
Re: blower motor quit working Sign In

Unless the relay contacts were fried. Open up the old relay and check out the contacts.

Glad to see you got your blower working again. Smile





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

(This post was edited by Discretesignals on Jul 5, 2012, 12:24 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 5, 2012, 1:21 PM

Post #16 of 16 (2475 views)
Re: blower motor quit working Sign In


Quote
Unless the relay contacts were fried.


Yeah...... right.......(sarcasm)



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







 
 
 






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