heater only works at one speed
#1
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heater only works at one speed
it is starting to get really cold here, so i would like to get my heater to work properly. right now, it wont switch speeds. it only stays on the lowest one. i have replaced the actual fan, and the heater control switch. so far, no luck. what should i do, when it rains its hard to see cuz the defroster doesnt work properly.
thanks
daniel
thanks
daniel
#2
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Car: yep
Engine: uhuh
Transmission: sure does
There is a set of blower resistors mounted on the top of the heater box in the engine compartment.
You will see about 5 or so wires going to a plug that is held into the heater box with 2 9/32 bolts.
Remove this and look at the coils. If any are broken, there is your problem.
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ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
R.I.P. #3
My favorite quote about D.E. "He can see air"
You will see about 5 or so wires going to a plug that is held into the heater box with 2 9/32 bolts.
Remove this and look at the coils. If any are broken, there is your problem.
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
R.I.P. #3
My favorite quote about D.E. "He can see air"
#3
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Location: Austin, Texas
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Car: 1984 Pontiac Trans Am
Engine: 5.0L
Transmission: TH700-R4
I have gad this problem as well. One of my buddies pointed out that my vacuum hoses were routed wrong under my hood. There are vacuum hoses that help to control the blower for you car. Check those out as well.
Good luck!
------------------
1984 Trans Am Coupe
700-R4 Tranny
Mods:
K&N
Rebuilt carb
Rebuilt heads
3" Mandrel Exhaust
Hooker Headers
Lunati Cam
1" Lowering Springs
Clarion CD
Kicker Speakers
2 MTX 4000
Pearl White Paint
"Live It To The Last"
Good luck!
------------------
1984 Trans Am Coupe
700-R4 Tranny
Mods:
K&N
Rebuilt carb
Rebuilt heads
3" Mandrel Exhaust
Hooker Headers
Lunati Cam
1" Lowering Springs
Clarion CD
Kicker Speakers
2 MTX 4000
Pearl White Paint
"Live It To The Last"
#4
Supreme Member
Join Date: Dec 1999
Location: Reno, NV
Posts: 1,237
Likes: 0
Received 1 Like
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Car: yep
Engine: uhuh
Transmission: sure does
The vac. hoses don't control the blower speed, they just control where the air come out of.
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
R.I.P. #3
My favorite quote about D.E. "He can see air"
------------------
ASE Mechanic/Machinist/Smog Tech
1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R
R.I.P. #3
My favorite quote about D.E. "He can see air"
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