1998 UCF20 HVAC specialist help needed
09-25-12, 08:41 PM
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1998 UCF20 HVAC specialist help needed
I have myself a 1998 LS400
the a/c works and the heating works in both zones. the fan works on all speeds just fine
My problem is that the center vents on my dash.. blow different temp air than my side vents.. on BOTH sides.. equally..
When I have the system set to COLD on both zones. My side vents get substatially colder than my middle vents do
and when I have the system set to HOT, guess what? My side vents get hotter than my middle ones do!
The amount of air volume is the same from the middle to the side vents. it's not an airflow issue!
what the heck could this be? My 1991 LS did not have this issue.
When I got the car.. there was no cabin air filter installed, and the blower had so much junk in it that it would barely spin on it's highest speed. I cleared all the junk out and installed a cabin air filter but the damage may have been done?
What could this be and how do I go about diagnosing and fixing it.
the a/c works and the heating works in both zones. the fan works on all speeds just fine
My problem is that the center vents on my dash.. blow different temp air than my side vents.. on BOTH sides.. equally..
When I have the system set to COLD on both zones. My side vents get substatially colder than my middle vents do
and when I have the system set to HOT, guess what? My side vents get hotter than my middle ones do!
The amount of air volume is the same from the middle to the side vents. it's not an airflow issue!
what the heck could this be? My 1991 LS did not have this issue.
When I got the car.. there was no cabin air filter installed, and the blower had so much junk in it that it would barely spin on it's highest speed. I cleared all the junk out and installed a cabin air filter but the damage may have been done?
What could this be and how do I go about diagnosing and fixing it.
09-26-12, 02:53 AM
#3
I have myself a 1998 LS400
the a/c works and the heating works in both zones. the fan works on all speeds just fine
My problem is that the center vents on my dash.. blow different temp air than my side vents.. on BOTH sides.. equally..
When I have the system set to COLD on both zones. My side vents get substatially colder than my middle vents do
and when I have the system set to HOT, guess what? My side vents get hotter than my middle ones do!
The amount of air volume is the same from the middle to the side vents. it's not an airflow issue!
what the heck could this be? My 1991 LS did not have this issue.
When I got the car.. there was no cabin air filter installed, and the blower had so much junk in it that it would barely spin on it's highest speed. I cleared all the junk out and installed a cabin air filter but the damage may have been done?
What could this be and how do I go about diagnosing and fixing it.
the a/c works and the heating works in both zones. the fan works on all speeds just fine
My problem is that the center vents on my dash.. blow different temp air than my side vents.. on BOTH sides.. equally..
When I have the system set to COLD on both zones. My side vents get substatially colder than my middle vents do
and when I have the system set to HOT, guess what? My side vents get hotter than my middle ones do!
The amount of air volume is the same from the middle to the side vents. it's not an airflow issue!
what the heck could this be? My 1991 LS did not have this issue.
When I got the car.. there was no cabin air filter installed, and the blower had so much junk in it that it would barely spin on it's highest speed. I cleared all the junk out and installed a cabin air filter but the damage may have been done?
What could this be and how do I go about diagnosing and fixing it.
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