AC not cooling

Tiny
PJS101975
  • 2005 PONTIAC VIBE
  • 64,000 MILES

Recently, the AC in my 2005 Pontiac Vibe failed to blow out cool air. In an attempt to troubleshoot, I did the following: 1: Verified that the AC compressor clutch was engaging when AC button depressed - OK 2: Checked 10 amp fuse (interior fuse box) - OK. 3: Checked system pressure using R134a recharge kit. - OK. I did not add any refrigerant because the gauge indicated that the system was ok in terms of pressure. 4: Replaced the cabin air filter, removed the blower motor and cleaned it out. Ensured that the hose from the blower motor to the unit was connected properly as well. Also, when the AC system is on, there is a hissing noise coming from inside the console. Probably didn't notice before.

Unfortunately, I do not have a gauge that can hook into the high pressure end of the system. Would it hurt to add a small amount of R134a to see if the problem is resolved?

Any ideas?

Thank you for your help in advance!

Do you
have the same problem?
Yes
No
Sunday, August 5th, 2012 AT 4:38 PM

1 Reply

Tiny
2CARPROS KEN
  • ADMIN
  • 12,141 POSTS

Hello,

I would check the high side to give you a real idea how much the system has in it.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

and

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

If okay:

With the ac running grasp the larger of the two ac lines coming out of the firewall, if it is cold then it is not a problem with the refrigerant system but more or like a temperature air blend door problem which is common on those cars becasue the cable mount breaks and the door wont move.

Check out some diagrams (below)

Please let us know happens so it will help others.

Best, Ken

Was this
answer
helpful?
Yes
No
Saturday, February 18th, 2017 AT 2:57 PM

Please login or register to post a reply.

Recommended Guides