What causes a blower motor resistor to melt?
Arching is what’s melting the connector. when you put the connectors together it may be a good idea to take a scratch awl or pick and squeeze the spade connectors in the plug tighter. You must log in or register to reply here.
What was the wire that melted on my blower?
One of the center wires is burned and melted about 1/4 inch outsode the plug. By wiggling that wore I can get speeds one through four to work again, but the wore and plug get really hot. I bought the connector and resistor at Auto Zone last time, the one that’s in there now.
What causes a blower motor to stop working?
If your blower motor has stopped working, check the connector. If it’s in bad shape, or has melted, it may be the cause of the motor’s failure. Get your blower motor working with a connector from O’Reilly Auto Parts. Check out our blower motor resistor connector options for your vehicle.
How can you tell if a blower resistor has failed?
With a DMM (Digital Multimeter – Ohmmeter function) remove the blower resistor and measure the resistance readings on the blower resistor module between pin 2 and pin 1 (should read 0 Ohms) then between pin 1 and pin 3 then 3 & 4 then 4 & 5 and see what they are reading to find out which one has failed.
Arching is what’s melting the connector. when you put the connectors together it may be a good idea to take a scratch awl or pick and squeeze the spade connectors in the plug tighter. You must log in or register to reply here.
One of the center wires is burned and melted about 1/4 inch outsode the plug. By wiggling that wore I can get speeds one through four to work again, but the wore and plug get really hot. I bought the connector and resistor at Auto Zone last time, the one that’s in there now.
How do you plug in a Ford Motorcraft blower motor resistor?
The plug fit perfectly and securely into the new ford motorcraft blower motor resistor. I suggest using a dab of dielectric grease on the each terminal of the connector and the edges of the connector before inserting it into the resistor socket.
Which is Dorman blower motor resistor harness for Ford truck?
This Dorman 973-307 harness is exactly what was needed to get my truck’s hvac fan working again with all 4 speeds functional. Use it with the hvac blower motor resistor 973-011. Both worked perfectly in this application. See photo. Replaced my burned OEM connector perfectly!
Can a blower motor go out and smoke a resistor?
A blower motor that is going out can smoke a resistor. I lost #5 (no melting, relay in resistor crapped out) and after replacing the resistor the motor clamped at 23A and some change. I replaced the motor just to be on the safe side and it was right around 22A.
When did the blower motor on my Blazer stop working?
2005 T’Blazer, 6 cylinder, manual A/C controls. Maybe 6 months ago, blower fan speed 5 stopped working, followed by the rest shortly after. Following the great advice on this forum, I checked the blower motor resistor and plug, and replaced as advised.
Can you check the draw of a blower motor?
You can check the current draw of the blower motor with a 12V battery/power supply and a DMM to be sure. given all the good responses I’ve gotten here, is to buy the connector plug that the Captain linked to, a new Delco resistor, and install them. The blower motor seems fine, it sounds and runs as it always has.
Is the blower resistor on my GMC Sierra on fire?
This was preformed on a 2004 GMC Sierra with a blower resistor that had been on fire and melted the wiring. Loading…
What kind of front blower motor resistor do I Need?
PartsSquare 89019088 HVAC Front Blower Motor Resistor RU571 JA1582 Compatible with Escalade 2002-2006 Compatible with Silverado 1500 2500 3500 Sierra 1500 2500 3500 What other items do customers buy after viewing this item?
2005 T’Blazer, 6 cylinder, manual A/C controls. Maybe 6 months ago, blower fan speed 5 stopped working, followed by the rest shortly after. Following the great advice on this forum, I checked the blower motor resistor and plug, and replaced as advised.
What to do if your blower motor melts?
Jeep’s fix was to replace the melted blower motor resistor and install a new wire harness with updated connectors. The problem was with too much resistance in the connector which generated heat. Very scary since there are numerous stories of GC’s starting on fire related to this issue.
Can a bad HVAC fan melt a connector?
It Is true that a good HVAC fan motor doesn’t draw too many amps and won’t melt wiring or connectors. The problem is that when the fan motor starts to go bad, it starts drawing too much current from its shorted windings. A good fan motor is supposed to draw something like 14-15 amps on its highest fan speed setting.