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#1 |
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 479
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Heater blower ?/problem
Working on 68. Heater blowermotor does not work. Replaced motor, resistor and fan speed switch. Fuze and ground are good. I have power to connector that plugs into blower motor. Still doesn't work. What am I missing ? Tks in advance
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"You are not forgotten" USMC 75-79 (Aviation Ordnance Tech- F-4 Phantom) 1959 H-D Panhead. Owned since 1978. Currently with son in Lawton, OK. 1968 Chevy Custom SWB pick up. Fleetside. Lowered 4/6. Totally refurbished. 1966 Pontiac GTO. 4 speed. Saved original 389. Now has slightly built 455 engine. 355 rear gears. Very fun to drive ! |
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#2 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,480
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Re: Heater blower ?/problem
Do you have a ground wire in place on the motor and does it have a good connection?
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#3 |
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 479
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Re: Heater blower ?/problem
Yes good ground. Shouldn't the motor run with unplugging hot wire and running a wire straight from batt. + to blower motor ? Grounded of course.
__________________
"You are not forgotten" USMC 75-79 (Aviation Ordnance Tech- F-4 Phantom) 1959 H-D Panhead. Owned since 1978. Currently with son in Lawton, OK. 1968 Chevy Custom SWB pick up. Fleetside. Lowered 4/6. Totally refurbished. 1966 Pontiac GTO. 4 speed. Saved original 389. Now has slightly built 455 engine. 355 rear gears. Very fun to drive ! |
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#4 | |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,480
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Re: Heater blower ?/problem
Quote:
I wonder if your fan is jammed somehow inside the housing preventing it from rotating. |
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#5 |
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 479
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Re: Heater blower ?/problem
With jumper wire on both pos n neg from battery to motor it still doesn't run. Second "new" motor thinking 1st one could be bad. Both these new motors and the old one do not run when hooked directly to 12v(battery)
__________________
"You are not forgotten" USMC 75-79 (Aviation Ordnance Tech- F-4 Phantom) 1959 H-D Panhead. Owned since 1978. Currently with son in Lawton, OK. 1968 Chevy Custom SWB pick up. Fleetside. Lowered 4/6. Totally refurbished. 1966 Pontiac GTO. 4 speed. Saved original 389. Now has slightly built 455 engine. 355 rear gears. Very fun to drive ! |
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#6 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,480
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Re: Heater blower ?/problem
See if it will run when removed from the heater housing.
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#7 |
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 479
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Re: Heater blower ?/problem
Nope. Does not work holding in hand hooked up directly to batt
__________________
"You are not forgotten" USMC 75-79 (Aviation Ordnance Tech- F-4 Phantom) 1959 H-D Panhead. Owned since 1978. Currently with son in Lawton, OK. 1968 Chevy Custom SWB pick up. Fleetside. Lowered 4/6. Totally refurbished. 1966 Pontiac GTO. 4 speed. Saved original 389. Now has slightly built 455 engine. 355 rear gears. Very fun to drive ! |
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#8 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,480
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Re: Heater blower ?/problem
Wow. That's crazy. Is the motor housing made from multiple metal segments? If so, try grounding the individual segments.
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#9 |
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 479
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Re: Heater blower ?/problem
Ok tks. I'll move ground around. At this point I'll try anything !!!!!
__________________
"You are not forgotten" USMC 75-79 (Aviation Ordnance Tech- F-4 Phantom) 1959 H-D Panhead. Owned since 1978. Currently with son in Lawton, OK. 1968 Chevy Custom SWB pick up. Fleetside. Lowered 4/6. Totally refurbished. 1966 Pontiac GTO. 4 speed. Saved original 389. Now has slightly built 455 engine. 355 rear gears. Very fun to drive ! |
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#10 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,706
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Re: Heater blower ?/problem
I'm thinking the housing mount hole where you attach the ground or neg battery jumper does not have sufficient amount of paint removed to bare metal to make a good ground connection. New blower motor needs some of that paint removed, or perhaps a star washer to really bite through that paint.
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#11 |
Registered User
Join Date: Feb 2012
Location: Vinton, Va.
Posts: 479
|
Re: Heater blower ?/problem
Tks for replies. I thought of that screw that connects to the ground wire. But even grounding motor case, after sanding paint off, directly to battery, and positive connection directly to batt. Motor still doesn't run. I even returned the 1st motor I bought thinking it might have been defective. Any other thoughts ? Anyone?.
__________________
"You are not forgotten" USMC 75-79 (Aviation Ordnance Tech- F-4 Phantom) 1959 H-D Panhead. Owned since 1978. Currently with son in Lawton, OK. 1968 Chevy Custom SWB pick up. Fleetside. Lowered 4/6. Totally refurbished. 1966 Pontiac GTO. 4 speed. Saved original 389. Now has slightly built 455 engine. 355 rear gears. Very fun to drive ! |
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#12 |
Senior Member
![]() Join Date: Apr 2016
Location: Cypress, TX
Posts: 3,706
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Re: Heater blower ?/problem
Try a different battery and different wires to do your test. At the car parts store explain the problem and hook it up to a battery and confirm it works before buying the next one.
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#13 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,634
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Re: Heater blower ?/problem
Dumb question but I gotta ask -- have you verified nominal 12VDC between the two wires with a VOM, or at least a test light?
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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