# Air conditioning puzzle **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [August 31, 2008, 8:52pm UTC](https://community.cartalk.com/t/air-conditioning-puzzle/18933 "2008-08-31T20:52:26Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![terryg](https://avatars.discourse-cdn.com/v4/letter/t/71e660/32.png) [@terryg](https://community.cartalk.com/u/terryg)\ **Post date:** [August 31, 2008, 8:52pm UTC](https://community.cartalk.com/t/air-conditioning-puzzle/18933/1 "2008-08-31T20:52:26Z")
I have this 1994 camry wagon with AC that works as long as I keep the engine speed over 2000 rpm. If I stop at a light, it won’t work for the rest of the trip unless I turn it off before coming to a stop. Then, once I get going again, it will cool like a champ. ---
**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\ **Post date:** [August 31, 2008, 11:25pm UTC](https://community.cartalk.com/t/air-conditioning-puzzle/18933/2 "2008-08-31T23:25:22Z")
When you switch your A/C on, does the condenser (radiator) fans come on?? Do they stay on as long as the compressor is running?? transman ---
**Author:** ![igor68](https://avatars.discourse-cdn.com/v4/letter/i/4bbf92/32.png) [@igor68](https://community.cartalk.com/u/igor68)\ **Post date:** [August 31, 2008, 11:42pm UTC](https://community.cartalk.com/t/air-conditioning-puzzle/18933/3 "2008-08-31T23:42:22Z")
i would check the pressure switch. ---
**Author:** ![terryg](https://avatars.discourse-cdn.com/v4/letter/t/71e660/32.png) [@terryg](https://community.cartalk.com/u/terryg)\ **Post date:** [September 1, 2008, 4:19am UTC](https://community.cartalk.com/t/air-conditioning-puzzle/18933/4 "2008-09-01T04:19:55Z")
The radiator fans are hydraulic; they run off the power steering circuit and seem to be running properly. My sense is that it has to do with the pressure switch.