AC blows different under acceleration
Thread Starter
Racer
Joined: Apr 2000
Posts: 341
Likes: 0
From: Lexington KY
AC blows different under acceleration
Noticed that when the car is under a load, the AC stops blowing through the dash vents and all of the air is routed to the floor. This is 91 vert with automatic heat and air. HELP! :rolleyes:
[Modified by kyvette, 12:54 AM 9/7/2002]
[Modified by kyvette, 12:54 AM 9/7/2002]
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 59
From: Fremont Oh
Re: AC blows different under acceleration (kyvette)
If its an LT1 or LT4 this is normal, its part of the fuel enrichment. The compressor stops for 10 seconds and then will kick back in...
mo
mo
Thread Starter
Racer
Joined: Apr 2000
Posts: 341
Likes: 0
From: Lexington KY
Re: AC blows different under acceleration (kyvette)
Actually it's a L-98.
Any other ideas?? If it is a vacuum problem, where do I start? :confused:
[Modified by kyvette, 12:55 AM 9/7/2002]
Any other ideas?? If it is a vacuum problem, where do I start? :confused:
[Modified by kyvette, 12:55 AM 9/7/2002]
Racer
Joined: Feb 2002
Posts: 455
Likes: 0
From: Fraser MI
Re: AC blows different under acceleration (Mo_Bandy)
If its an LT1 or LT4 this is normal, its part of the fuel enrichment. The compressor stops for 10 seconds and then will kick back in...
mo
mo
:cheers:
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
Re: AC blows different under acceleration (kyvette)
The back of the motor has a vacuum check valve that may need replacing.Mine was on the passenger side near the distributor and had a crack in it.I replaced that and it fixed the problem.I think the vaccum line also comes off the rear plenum vacuum ports,unless they change the set up on speed density cars for the Map sensor.
That vacuum line also runs across the firewall then goes inside the car to the climate control unit inside the dash.
If the line is cracked or broken or the small check valve is broken,its usualy a simple fix.
Check ALL the vacuum lines.
:)
