CoolingDiscuss all of the aspects of cooling that you can think of! Radiators, transmissions, electric fans, etc.
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I put a new vent blower motor in last week. Now I can hear the motor blowing as I turn the ac control knob up or down.But very little air comes out of vents or defroster,I got the car back in May blower motor never worked since I got it.What can I check to fix this prob?
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Can you hear like a vacuam leak when you move your controls? IF you can take your controls out there is a valve with a bunch of vacuam lines hooked to it it needs replaced it controls your vent doors. Hope this helps
also make sure the 2 hardlines in the engine bay are hooked up; i made that mistake and could never figure out why my vents wouldn't move anymore....
__________________
1987 Trans Am, work in progress
2008 Pontiac G8
Retired: 1984 Camaro "ZF" 2.8L, 1989 Camaro RS
Customer Service Manager, 1A Auto Parts
Mine will only turn one way.Its blowing but not much its like my 92 silverado blows as much on low, as this camaro blows on high. I wonder if there is a vent door semi closed somewhere I can see the vent door open under the blower motor when I turn ac on.
Did you check the valve in back of the a/c heater controls it is round an controls the opening and closing of you vent doors Ive had to replace mine twice
If there's a vac leak in the system, the default setting is defrost. Doesn't sound like the case here. I'd remove the blower motor, give it a once over, and test it. You may have a bad motor or a loose cage. Moreover, don't expect the motor to blow as hard as a new car. Won't happen regardless of what you do.
BTW, did you have to transfer the cage to the new motor?
JamesC
__________________ "There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy." Hamlet
The motor came out of a 90 s10 blazer, I think almost all are a swap. The motor runs fine I meant to say I can watch it turn from underneath the dash when I turn ac on and the flapper door opens to suck more air.Maybe its doing all it can but that is very little air pressure.Thanks for all the helpful info.
Yes it is switching speeds but not blowing a strong volume of air out of the vents or defroster.Is there a vent door somewhere that could be semi closed? And James I didnt change the cage from other blower , I could not see how to take it off without breaking it.
Is there a vent door somewhere that could be semi closed?
For what little air is moving, does it blow from different areas if switched from the control ?
There could just be massive amount of dirt/debris collected on the evaporator coil screen that is blocking the air from getting to the ducts.
Quote:
And James I didnt change the cage from other blower
As long as the cage wheel was the same size and the blades pitched about the same, that shouldn't matter.
The controls move the air to defrost,heat and vent. Yes the s10 fan was same. Ok this evaporator coil that could be the culprit where is it located and how do I get to it?
is there air flow the same (weak) in the heat mode, too? if not, then how would the airflow differ from heat vs. a/c or defrost? doesn't it all come across the evap coil? i've heard a possible cause of this could be a leak in the ductwork behind the dash... if it does split somewhere for heat vs. a/c, then i'd be looking at the evap with debris as mentioned, or vacuum issues. just my .02...
__________________ A hot car with NOS is like a hot chick with an STD. You want to hit it but you are afraid of what might happen...
To be honest I have not tried the heat yet.I will take the cover off the evaporator Sat and let you all know what I find. Thanks again for all the help.
