1995 tahoe 4 door v8
Dear MW: My ac blows weak. it is very cold, has need blower
motor act if a door is not opened all the way or a blcokage in
system...
Hi JD,
I am going to need a little more info. No sure if you have a fan speed problem.
Did you replace one of the actuator door motors? Which one.
Any more detailed info. you can give me will help me to diagnos your problem.
No all i have changed is the fan motor. It runs all speeds. I removed and switched speeds. I
can hear doors moving in dash. It sounds like it is blowing against a closed damper. very
little air flow at vents. I change motor hoping to fix but did not change air volume....
MW:
Having a little trouble with this one. Checked for service bulletins- none.
Ask a couple of the other techs. We come up with a few possibilities-
First make sure that the air flow is just not directed to the def. or floor.
That would indicated improper mode door operation.
We have had problems with the a/c evaporator core getting plugged with dirt on early to
mid 90's cars, but not in trucks. What happens is, the evaporator core leaks freon and oil
and attracts dirt. The airflow will slowly be reduced over time. The evap. core is the first
thing that the airflow passes.
If it just all of a sudden happened, by the door diagram- there is no 1 door that can prevent
airflow, it would just be directed somewhere else (der. or floor)
It is possible that something is blocking the evap core- paper or something.
Back
Dear MW: My ac blows weak. it is very cold, has need blower
motor act if a door is not opened all the way or a blcokage in
system...
Hi JD,
I am going to need a little more info. No sure if you have a fan speed problem.
Did you replace one of the actuator door motors? Which one.
Any more detailed info. you can give me will help me to diagnos your problem.
No all i have changed is the fan motor. It runs all speeds. I removed and switched speeds. I
can hear doors moving in dash. It sounds like it is blowing against a closed damper. very
little air flow at vents. I change motor hoping to fix but did not change air volume....
MW:
Having a little trouble with this one. Checked for service bulletins- none.
Ask a couple of the other techs. We come up with a few possibilities-
First make sure that the air flow is just not directed to the def. or floor.
That would indicated improper mode door operation.
We have had problems with the a/c evaporator core getting plugged with dirt on early to
mid 90's cars, but not in trucks. What happens is, the evaporator core leaks freon and oil
and attracts dirt. The airflow will slowly be reduced over time. The evap. core is the first
thing that the airflow passes.
If it just all of a sudden happened, by the door diagram- there is no 1 door that can prevent
airflow, it would just be directed somewhere else (der. or floor)
It is possible that something is blocking the evap core- paper or something.
Back
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