ac stops blowing cold when car warms up
08-27-2018, 09:20 PM
#1
Intermediate
Thread Starter
Member Since: Oct 2012
Location: Jacksonville/Orange Park FL
Posts: 34
Received 0 Likes
on
0 Posts
ac stops blowing cold when car warms up
1995 c4 base, I have vacuumed out and recharged the system. I changed the clutch hub. The car ac blows somewhat cold with I first start it but stops when the car warms up
08-30-2018, 09:43 AM
#3
Melting Slicks
Sounds as if the blend door is staying open, as well as some other suspicions.
A working system should not blow somewhat cool air, it should blow cold air upon start up after 10-20 seconds.
If yours is not, better keep looking at the charge or the compressor.
As for getting warmer as car warms up. This sounds as if your heater blend door is either partially or fully open.
When on AC and cold is the request, the blend door should fully close to keep the heated coolant flowing through the heater core from warming the HVAC air.
So again, you may have two things going on here.
Marty
A working system should not blow somewhat cool air, it should blow cold air upon start up after 10-20 seconds.
If yours is not, better keep looking at the charge or the compressor.
As for getting warmer as car warms up. This sounds as if your heater blend door is either partially or fully open.
When on AC and cold is the request, the blend door should fully close to keep the heated coolant flowing through the heater core from warming the HVAC air.
So again, you may have two things going on here.
Marty