heat/ac not blowing strong enough
Thread Starter
Member

Joined: Nov 2001
Posts: 162
Likes: 0
From: Huntington Station Ny
Car: 1989 TRANS AM
Engine: 2004 GTO LS1
Transmission: 4L60E
Axle/Gears: 02 ws6 torsen diff 3:42
heat/ac not blowing strong enough
dont' really have time to diagnose my car unfortunatly b/c of work... but just needed some info if anyone has had this problem before. blower motor been changed, climate controller changed, relay/resistors changed. seems to be working good, all except the airflow coming out of the vents. seems to be minimal. blower motor changes speeds, and seems to be working normal, good voltage and amps goin to motor. was probably thinking maybe a stuck door in the heater box, or a vaccum leak, but thought i would ask around maybe i skipped over something. has anyone had this problem?
87,
I've had similar flow problems caused by debris accumulation in the evaporator core. It's a PITA to access and clean the face of the coil, but it makes a serious difference in air flow. Another possibility is that the blower is running backward. A squirrel cage blower will move air in either direction, but will move a LOT less air when running backward. If you have a remanufactured blower, it's a possibility. The blower wheel vanes should curve in the direction of air flow.
I've had similar flow problems caused by debris accumulation in the evaporator core. It's a PITA to access and clean the face of the coil, but it makes a serious difference in air flow. Another possibility is that the blower is running backward. A squirrel cage blower will move air in either direction, but will move a LOT less air when running backward. If you have a remanufactured blower, it's a possibility. The blower wheel vanes should curve in the direction of air flow.
Thread
Thread Starter
Forum
Replies
Last Post
Glowsock
Tech / General Engine
2
Sep 11, 2015 11:09 PM









