...... No Heat......
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Freshman User
Joined: Apr 2002
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From: NYC USA
...... No Heat......
Hi all... I changed the resistor, & the motor is good...but it still is not working...What else could be the problem??
Could it be the switch or just the wiring itself.?
Could it be the switch or just the wiring itself.?
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
...... No Heat......
Changing parts before you know what the problem is is a good way to waste money, but it rarely fixes it. Is the fuse blown? Do you have 12V at the motor? You need to do some more diagnosis.
Thread Starter
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Freshman User
Joined: Apr 2002
Posts: 37
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From: NYC USA
...... No Heat......
Originally posted by steve83
Changing parts before you know what the problem is is a good way to waste money
Changing parts before you know what the problem is is a good way to waste money
Iwas thinking resistor because for the last 2 years the heater would only work on high, until recently nothing comes out.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
...... No Heat......
Gamble another $12 on a Haynes manual and you'll never have to pay a service station again. It tells how to diagnose (and repair) almost everything on the truck.
Not putting all the information in your first post slows everything down. Is there anything else you've done, checked, changed, or noticed that could pertain to your blower motor not working? Did you check the voltage at the motor connector or at the resistor? Here are the current (Amps) & voltage readings you should get at the motor connector with it plugged in and the engine running:
Switch ......................... A ......................... V
Low ........................... 6.0 ...................... 5.0
Medium Low .............. 8.0 ...................... 7.0
Medium High ............. 15.0 ..................... 10.0
High .......................... 25.0 ..................... 12.8
Magnetic Clutch ........ 4.57 ..................... 12.8
Not putting all the information in your first post slows everything down. Is there anything else you've done, checked, changed, or noticed that could pertain to your blower motor not working? Did you check the voltage at the motor connector or at the resistor? Here are the current (Amps) & voltage readings you should get at the motor connector with it plugged in and the engine running:
Switch ......................... A ......................... V
Low ........................... 6.0 ...................... 5.0
Medium Low .............. 8.0 ...................... 7.0
Medium High ............. 15.0 ..................... 10.0
High .......................... 25.0 ..................... 12.8
Magnetic Clutch ........ 4.57 ..................... 12.8
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