Blower motor

[kbenz]

When I first turn on my ac it blows good and strong. After about an hour it dies down. Where should I start looking?

 

[nhwrench01]

If your talking about the blower motor( as the heading states ) id look at the resister and the plug to it,, with hi amps and time, the plug might be getting hot , slowing the voltage ...?? try unplugging the resistor plug,,, should be easy to pull off ( relatively)... look for the plug to have been melted or the wires to be burnt close to the plug... anyway, thats where id start,,, good luck..
ill check back when i can,, and see how your doing..

 

[Greenie]

Evaporator frosted up?

 

[Nero]

I'm gonna second evap frosting up. Blower resistor acting up would only affect speeds except hi.

 

[kbenz]

It does freeze up til I turn the ac on?
These are the wires going to the blower motor. They get pretty warm

 

[IDIBRONCO]

That might increase the resistance enough that the blower motor doesn't spin as fast.

 

[Nero]

You can see the connector has gotten a little toasty there. I'd put a better connector in and also make sure the grounds are clean

 

[kbenz]

You can see the connector has gotten a little toasty there. I'd put a better connector in and also make sure the grounds are clean

Will do

 

[Jesus Freak]

If the bad connector is generating heat and the evaporator is freezing up....... wouldn't certain logic say use a worse connector to generate more heat to thaw out the evaporator?.......or am I thinking about this wrongly?

 

[Nero]

If the bad connector is generating heat and the evaporator is freezing up....... wouldn't certain logic say use a worse connector to generate more heat to thaw out the evaporator?.......or am I thinking about this wrongly?

Well the problem is, that connector for the blower motor doesnt sit in the hvac ducting, its in the engine bay.

 

[Jesus Freak]

Well the problem is, that connector for the blower motor doesnt sit in the hvac ducting, its in the engine bay.

I figured my line of thinking was off.......

 

[Rdnck84_03]

It does freeze up til I turn the ac on?
These are the wires going to the blower motor. They get pretty warm

Ok I may be missing what you mean by this statement, there is no way for it to freeze up without the a/c being on?

James

 

[kbenz]

Ok I may be missing what you mean by this statement, there is no way for it to freeze up without the a/c being on?

No it’s not my evaporator. I messed up. The lines and that round container under the hood freezes up

 

[IDIBRONCO]

Maybe the system is slightly overcharged? Maybe it's just so good that you can't run it full blast all the time?

 

[Black dawg]

When I first turn on my ac it blows good and strong. After about an hour it dies down. Where should I start looking?

Dies down? Temp gets not as cold, or little to no airflow but can still hear the fan, or fan stops?