A/C hardly blows at part throttle
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Junior Member
Joined: Mar 2007
Posts: 401
From: Shreveport, LA
A/C hardly blows at part throttle
The air blows fine until I give it ~50% throttle or more, then it barely blows from the vents. Manual A/C...I found the red and blue vac lines from the control module(with the ***** on it) by the BCM. They go into a distribution block, of sorts, with two empty ports on the other side. Anyone know what's suppose to go in those empty ports. I can take a pic if needed. Thanks.
You have a problem with the vacuum supply from the engine to the HVAC controls. The vacuum reservoir is located in (as in inside) the driver side fender up near the firewall. If this is disconnected, it can cause this problem.
Thread Starter
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Junior Member
Joined: Mar 2007
Posts: 401
From: Shreveport, LA
Vac res is still connected. This problem appeared after I swapped bcm's for keyless entry, so I was sure I pulled something loose behind the dash. Finding the red and blue vac lines not attached to anything sort confirmed that. Looks like I'll be pulling it all apart again this afternoon.
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