Heat blower motor

[Stealthweapons]

Need some help when I turn on blower ie flick the toggle switch to high or low the blower kicks on for a split second and then goes off and the gauges on the dash bounces,anybody know what my issue might be any help would be appreciated thanks in advance for my friends

 

[911joeblow]

The fan might be drawing too much load and popping the breaker. You might want to spin it by hand and make sure it is not full of debris. Trucks that have spent a lot of time under water tend to have this issue.

 

[Dock Rocker]

The fan might be drawing too much load and popping the breaker. You might want to spin it by hand and make sure it is not full of debris. Trucks that have spent a lot of time under water tend to have this issue.

And trucks with squirrel / rats nests in the blower.


Sent from my iPhone using Tapatalk

 

[dhaumann69166]

Another thing to check would be the grounds for your blower and the gauges. There is one on by the blower motor and another behind the heater controls. You can take your gauges out and have pretty easy access to the one behind the controls.

 

[Stealthweapons]

Spun the fan by hand No debris in the box fan motor just kicking on and off I’m thinking maybe the motor might be bad or I don’t know if there’s relays on these things are not kind a new to the military vehicle thing so I’m not exactly sure Maybe I’ll just try to buy a new fan see if I can’t find one on eBay or so and less anybody here know someone who may have the blower motor in stock

 

[Stealthweapons]

Oh and byThe way I appreciate everybody’s responses loven my M998

 

[dhaumann69166]

Spun the fan by hand No debris in the box fan motor just kicking on and off I’m thinking maybe the motor might be bad or I don’t know if there’s relays on these things are not kind a new to the military vehicle thing so I’m not exactly sure Maybe I’ll just try to buy a new fan see if I can’t find one on eBay or so and less anybody here know someone who may have the blower motor in stock

Take a jumper wire from the positive terminal on the battery to the positive lead on the blower motor. Should show you if your blower motor is bad or if the problem is before that.

 

[Stealthweapons]

Will do thanks

 

[86humv]

If motor is bad...I have some

 

[2wheels70]

Ground is likely or possibly the motor/wiring shorted

 

[dhaumann69166]

Don’t forget to check the ground on the blower before doing the jumper wire test. If it’s a bad ground you will still get no results with the jumper wire.