not much air flow/
Thread Starter
Instructor
Joined: Dec 2018
Posts: 146
Likes: 12
From: Houston Texas..
not much air flow/
On my 99, FRC, I have very low air at the vents..The A/C is very cold, have all fan speeds...But low to week air pressure at the vents....What is the problem?...............John.
Le Mans Master
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Last edited by helga203; Jun 28, 2021 at 01:38 PM.
Racer
Joined: Jul 2010
Posts: 391
Likes: 67
From: Oak Point Texas formerly okc
St. Jude Donor '16
I had the same issue on an 02 recently. I found that the air vents were not switching due to the vacuum hose. My remedy was to remove the air intake manifold and run a new vacuum hose to the canister in the front passenger fender well. You can find other threads on this issue. It resolved my issue. Now my vents blow so hard that I have to turn the air down even in the Texas heat.
Le Mans Master
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Melting Slicks
Joined: Jul 2015
Posts: 2,314
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From: Round Rock Texas
Mine broke under the battery. Remember to look through the electrical sock that is were it come in from intake to under battery.
https://www.corvetteforum.com/forums...th-pics-3.html
https://www.corvetteforum.com/forums...th-pics-3.html
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Racer
Joined: Jul 2010
Posts: 391
Likes: 67
From: Oak Point Texas formerly okc
St. Jude Donor '16
The link is a great write up on the vacuum line replacement. My hands were too big to get behind the manifold so I took it off. I would check and see if air is coming out of the dash vents and the top defroster at the same time, it is probably a vacuum leak. I have not heard or read of anyone having low voltage to the fan. However, every car is unique. I would make sure there is no air out of any other vent when the a/c is on, or use the defroster and make sure it is not blowing on the floor or out of the dash.
Le Mans Master
Joined: Jul 2010
Posts: 6,033
Likes: 730
The link is a great write up on the vacuum line replacement. My hands were too big to get behind the manifold so I took it off. I would check and see if air is coming out of the dash vents and the top defroster at the same time, it is probably a vacuum leak. I have not heard or read of anyone having low voltage to the fan. However, every car is unique. I would make sure there is no air out of any other vent when the a/c is on, or use the defroster and make sure it is not blowing on the floor or out of the dash.
do the easy first because the other. under dash and not that fun, then u can check voltage at motor plug.