Cold Air only when moving

KENROSECAR

MEMBER
2005 MERCURY MONTEGO

Air Conditioning problem 6 cyl Front Wheel Drive Automatic 95,000 miles

Hi Boys, I maintain this car meticulously and drive it highway daily. Last week the battery died, got a jump and went to the dealer and they replaced the Battery. Since then Ive noticed that when Im driving the auto temp is fine on the air conditioner but when I stop at a light it seems to blow warm air until I pick up speed again. No noises etc, just the AC isn't working properly when idle?

4 Replies

HMAC300

MECHANIC
48,601 POSTS

It sounds like you have a low charge on the air conditioner, here are a couple of guides that will help you get the air conditioner working again.

https://www.2carpros.com/articles/air-conditioner-how-to-add-freon

and

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

and

https://www.2carpros.com/articles/how-a-car-air-conditioner-works

Please let us know what happens.

Cheers,

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Saturday, December 19th, 2009 AT 5:42 PM

MERCURYMONTEGO2005

MEMBER
1 POST

During extreme heat ac will not get cold. It has the correct charge. Works great up to about 85 /90 degrees.

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-1

Tuesday, April 21st, 2015 AT 5:18 PM

TYREE DESHAUNE SWEETS

MEMBER
1 POST

I'm having same problem but mine just started Yesterday help

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Sunday, July 30th, 2017 AT 1:57 PM

KEN L

MASTER CERTIFIED MECHANIC
48,289 POSTS

Hello,

It sounds like the ac compression has gone out or has weak seals. Here is a guide that will show you what you are in for when doing the job.

https://www.2carpros.com/articles/replace-air-conditioner-compressor

and

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

Diagram (below)

Please let us know what happens.

Cheers, Ken

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