Linear Mode
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
12-01-2003, 04:07 AM
|
#1 |
|
Registered Member
Join Date: Aug 2001
Location: Ft. Worth, TX
Posts: 456
|
How to test the blower motor and resistor?
My blower motor is drawing WAY too many volts from the system. The higher I turn the fan speed, the more it draws. I can get the voltmeter down to 10 at idle with the fan on high with a 130A alternator. Obviously, one of the two is bad.
Does anyone know a good test for either one? I have a Digital voltmeter so bring it on. I have the blower motor out right now, but it can easily be plugged in to run a test or two. I am guessing the resistor is bad.
__________________
You're gonna need your seatbelt |
|
|
|
12-01-2003, 08:29 AM
|
#2 |
|
Registered Member
Join Date: Mar 2003
Location: Saint Louis, MO
Posts: 634
|
Sound like the alternator to me - it should keep up with the stock fan no problem. Here is a diagram to help out with trouble shooting.............
__________________
Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/ |
|
|
|
|
12-01-2003, 10:28 AM
|
#3 |
|
Registered Member
Join Date: Aug 2001
Location: Ft. Worth, TX
Posts: 456
|
Thanks. The alternator is new and has been tested as good.
__________________
You're gonna need your seatbelt |
|
|
|
|
12-02-2003, 10:43 PM
|
#4 |
|
Mustangs
Join Date: Jul 2000
Posts: 1,938
|
On high the blower circuit bypasses the resistor (battery voltage to motor) and goes through stepped resistances through the resistor to obtain different speeds. How was the volume of air flow through your vents? A blower motor that draws alot of amperage usually is not working too good (extra resistance through motor) so it may draw alot of voltage. How much do your lights draw? Do you have pulleys? Do you ever have to jump start your car?
__________________
2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem  1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04  1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock) |
|
|
|
|
12-03-2003, 12:09 AM
|
#5 |
|
Registered Member
Join Date: Aug 2001
Location: Ft. Worth, TX
Posts: 456
|
Everything else works great. The motor blows very hard, but it was faulty. Plugged in a new one and it didn't even make the needle move on high.
__________________
You're gonna need your seatbelt |
|
|
|
|
12-03-2003, 10:44 PM
|
#6 |
|
Mustangs
Join Date: Jul 2000
Posts: 1,938
|
Cool, that's good to hear you figured it out. Just a hungry blower motor
__________________
2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock) |
|
|
|
 |
| Thread Tools | |
| Display Modes | Rate This Thread |
|
|