No power to blower motor!!
Thread Starter
Junior Member
Joined: Oct 2013
Posts: 11
Likes: 0
From: Greensburg, IN
Car: 1991 Chevy Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
No power to blower motor!!
I have a 1991 chevy rs 305 camaro. I have put a new blower motor, heater control switch, fuse, resistor, and have tested the relay and still have no power to the blower motor and im at a loss. Im guessing i have a burnt wire somewhere but i dont have any diagrams of these cars to go by when i dig into the harness. Is there something im possibly missing that could cause my problem. Need heat soon cause its already in the low 40s any help is appreciated guys thanks! 
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: No power to blower motor!!
https://www.thirdgen.org/forums/tech...formation.html
If you use the search button above there is lots of info about blower problems
Do you have power available ( coming in ) at the relay , at the switch?
https://www.thirdgen.org/forums/post...854-post4.html
https://www.thirdgen.org/forums/post...106-post4.html
Typical blower circuit here
http://92b4crs.tripod.com/86wiring/dia-pics/63-0.jpg
Do you have power available ( coming in ) at the relay , at the switch?
https://www.thirdgen.org/forums/post...854-post4.html
https://www.thirdgen.org/forums/post...106-post4.html
Typical blower circuit here
http://92b4crs.tripod.com/86wiring/dia-pics/63-0.jpg
Thread Starter
Junior Member
Joined: Oct 2013
Posts: 11
Likes: 0
From: Greensburg, IN
Car: 1991 Chevy Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
Re: No power to blower motor!!
How far down is the fusible link?? Most of the wires look likle they have been replaced in some spots with male and female wire connectors and the red wire has a male/female connector that looks like it has gotten hot because it is black around some parts. Is it possible the wire is burned somnewhere then or what?? also the black wie that comes out of the same harness near the purple and orange and two shades of green looks like it has gotten hot to.
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: No power to blower motor!!
http://www.ebay.com/itm/1991-CHEVROLET-CAMARO-SERVICE-REPAIR-MANUAL-ORIGINAL-/310775222771?pt=Motors_Manuals_Literature&hash=item485ba591f3&vxp=mtr
Thread Starter
Junior Member
Joined: Oct 2013
Posts: 11
Likes: 0
From: Greensburg, IN
Car: 1991 Chevy Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
Re: No power to blower motor!!
Ya it would. But the wires are the factory ones they just have connectors on them, I just don't know what each of the four do.?
Thread Starter
Junior Member
Joined: Oct 2013
Posts: 11
Likes: 0
From: Greensburg, IN
Car: 1991 Chevy Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
Re: No power to blower motor!!
But 40.00 is high for me to spend right now lol. That's y I came on here
Thread Starter
Junior Member
Joined: Oct 2013
Posts: 11
Likes: 0
From: Greensburg, IN
Car: 1991 Chevy Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
Re: No power to blower motor!!
The thick red wire going the opposite direction is a second ground wire for the blower motor
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Supreme Member
Joined: Jan 2006
Posts: 3,341
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
The 40’s Already? Makes You Wish Man Made Global Warming Was A Real Thing
Originally Posted by zach100g
How far down is the fusible link?
You won’t know which one it is therefore probe all of them to see if they are OK.
If they’re OK use a fused jumper wire to apply power directly to the blower + terminal.
Did the blower run?
If yes, jump pin A red wire to pin E purple wire at the blower relay.
Did the blower run?
It doesn’t matter what position the ignition key is in nor blower controls for these tests.
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Maybe I Should Have The Guys Put A Door In The Bottom For Any Rollovers In 2014
Joined: Apr 2005
Posts: 7,736
Likes: 14
From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Thread Starter
Junior Member
Joined: Oct 2013
Posts: 11
Likes: 0
From: Greensburg, IN
Car: 1991 Chevy Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
Re: No power to blower motor!!
Ok do I have to drop the starter in order to see the fusible link and also how do I fix it if it is burned or blow?? Thanks for the help
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
The 40’s Already? Makes You Wish Man Made Global Warming Was A Real Thing
Originally Posted by zach100g
do I have to drop the starter in order to see the fusible link
They are about 2 inches away from the terminal they are connected to.
Fusible Links usually look like a one inch plastic rod in line with the wire.
Originally Posted by zach100g
how do I fix it if it is burned or blow?
Let the clerk know the gage the of the wire the blown Link was protecting, and the package might have that info.
Some Link replacements look like a plain piece of wire so now you know what to expect.
Typically Link Wire is to be 2 commonly available AWG sizes smaller then the wire it is protecting.
So, if you are protecting a 10 AWG circuit, you will use a 14 AWG Link.
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Happy Racing!
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Maybe I Should Have The Guys Put A Door In The Bottom For Any Rollovers In 2014
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
The 40’s Already? Makes You Wish Man Made Global Warming Was A Real Thing
Originally Posted by zach100g
How do u replace them
It’s as E-Z as that!
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Happy Racing!
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