 | 
01-14-2012, 01:53 PM
|
#1 | | Member
Join Date: Apr 2010
Posts: 302
Car: '91 Firebird (base) Engine: 305 TBI Transmission: T-5 Axle/Gears: 3.08, drum brake, non-posi | Bad blower motor/resistor?
Hey all,
So I've been pretty active lately in trying to get the 'bird back into street-worthy condition lately, and it looks like I may have figured out an old issue from before. Back when I was driving the car, I'd occasionally hear a high pitched static/buzzing sound coming from behind the vents/under the hood somewhere, but had no clue what it was.
The other day, while listening to the engine running from under the hood, it started making the same noise I remembered hearing before, and it was coming from near the heater box. Another thing I've noticed, with my car off, and the key in the ignition (accessory mode), the vents have somewhat decent airflow, but when the car is running w/the heater on, I get poor airflow through the vents (heat slowly makes it's way through though).
Are these simply classic bad blower motor symptoms, or just a resistor? I'm mainly curious because one, I'll need a good working defrost if I start driving this car again around this time of year :P, and second, I'm planning to remove my A/C and install a delete pulley, so if I need to replace it, I want to know if I have to get some kind of non A/C version. | | | |  
|  | |
01-14-2012, 02:12 PM
|
#2 | | Moderator
Join Date: Aug 1999 Location: Lawrence, KS
Posts: 17,785
Car: Met. Silver 85 IROC Engine: 350 HO Deluxe (350ci/330hp) Transmission: T-5 (Non-WC) Axle/Gears: Limited Slip 3.23's | Re: Bad blower motor/resistor?
Resistors control lower fan speeds. Sounds like the motor is on the way out.
JamesC
__________________
"There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy." Hamlet
"Convictions are more dangerous enemies of truth than lies." Nietzsche | |
| | |
01-14-2012, 02:30 PM
|
#3 | | Supreme Member
Join Date: May 2004 Location: Lexington, SC
Posts: 3,703
Car: 1987 SC/1985 TA Engine: 350/vortec/ccc q-jet Transmission: 700-R4 Axle/Gears: 3.27 9-bolt | Re: Bad blower motor/resistor?
Fairly inexpensive piece to replace, too.
__________________ "A man who voluntarily drives a car like that and still manages to maintain such impervious confidence that it will faithfully start the next time he turns that key is an encouragement for us all to take greater risks in life."  | |
| | |
01-14-2012, 02:48 PM
|
#4 | | Member
Join Date: Apr 2010
Posts: 302
Car: '91 Firebird (base) Engine: 305 TBI Transmission: T-5 Axle/Gears: 3.08, drum brake, non-posi | Re: Bad blower motor/resistor?
Thanks! I guess my only question I have left, is if I plan to do an A/C delete on my car in the not too distant future, should I buy a non A/C version of the blower motor, or does it matter? | |
| | |
01-15-2012, 09:43 AM
|
#5 | | Supreme Member
Join Date: Mar 2007 Location: Ft Worth Tx
Posts: 3,511
Car: 91 Camaro RS Engine: empty bay (for now) Transmission: Built T-56 Axle/Gears: 3.42 stock posi disc | Re: Bad blower motor/resistor?
the ac and non a/c motors are slightly different IIRC. or it could just be the cage thats different. | |
| | |
01-15-2012, 10:11 AM
|
#6 | | Moderator
Join Date: Aug 1999 Location: Lawrence, KS
Posts: 17,785
Car: Met. Silver 85 IROC Engine: 350 HO Deluxe (350ci/330hp) Transmission: T-5 (Non-WC) Axle/Gears: Limited Slip 3.23's | Re: Bad blower motor/resistor?
Quote:
Originally Posted by travis401  the ac and non a/c motors are slightly different IIRC. or it could just be the cage thats different. | Different. Pics in the link below: http://www.thirdgen.org/techboard/co...geable-ac.html (Blower motors interchangeable?? (AC vs non-AC))
JamesC
__________________
"There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy." Hamlet
"Convictions are more dangerous enemies of truth than lies." Nietzsche | |
| | |
01-15-2012, 10:13 AM
|
#7 | | Supreme Member
Join Date: Mar 2007 Location: Ft Worth Tx
Posts: 3,511
Car: 91 Camaro RS Engine: empty bay (for now) Transmission: Built T-56 Axle/Gears: 3.42 stock posi disc | Re: Bad blower motor/resistor?
i remember seeing that thread | |
| | |
01-15-2012, 10:13 AM
| | ThirdGen 1992 Camaro
Paid Advertisement | |
|
| Tags | 1990, 91, ac, bad, blower, camaro, firebird, heaqt, heater, location, motor, resistor, rs, signs, symptoms  | | Thread Tools | Search this Thread | | | |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | |
| | | |
