# AC systems - who to go to? **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [July 5, 2010, 8:00pm UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451 "2010-07-05T20:00:22Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![95dime](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/95dime/32/7514_2.png) [@95dime](https://forums.speedlife.net/u/95dime)\ **Post date:** [July 5, 2010, 8:00pm UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/1 "2010-07-05T20:00:22Z")
alright, so i need to have someone diagnose the ac system in my car. compressor dosent turn on, i know its not siezed and i know the external temp sensor is working fine. so i figure either pressure/capacity is too low or too high, or the clutch dosent work. hoping someone can check the clutch before emptying out the system, drying, and refilling/pressurizing. not familiar with ac systems and havent needed to do this before. thanks. ---
**Author:** ![ubengineering](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ubengineering/32/5171_2.png) [@ubengineering](https://forums.speedlife.net/u/ubengineering)\ **Post date:** [July 6, 2010, 7:51am UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/2 "2010-07-06T07:51:57Z")
im sure ya checked fuses, so in that case try jumping the compressor, with the AC turned on take a paper clip and bend it so its shaped like 2 prongs, then place it in the evap tank (i think thats what the cylinder looking tank is) electrical hookup and see if it kicks on ---
**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\ **Post date:** [July 6, 2010, 9:06am UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/3 "2010-07-06T09:06:08Z")
> [@ubengineering](#): > > im sure ya checked fuses, so in that case try jumping the compressor, with the AC turned on take a paper clip and bend it so its shaped like 2 prongs, then place it in the evap tank (i think thats what the cylinder looking tank is) electrical hookup and see if it kicks on +1 ---
**Author:** ![95dime](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/95dime/32/7514_2.png) [@95dime](https://forums.speedlife.net/u/95dime)\ **Post date:** [July 6, 2010, 9:35am UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/4 "2010-07-06T09:35:33Z")
^^^thanks! will try that after work today. ---
**Author:** ![psychopjv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/psychopjv/32/7251_2.png) [@psychopjv](https://forums.speedlife.net/u/psychopjv)\ **Post date:** [July 6, 2010, 5:12pm UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/5 "2010-07-06T17:12:56Z")
Seriously an EVAP tank? It’s an accumulator/ or receiver drier. Some pressure switches can’t be jump because they are more than 2 prong and require a varied signal to be working properly. ---
**Author:** ![ubengineering](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ubengineering/32/5171_2.png) [@ubengineering](https://forums.speedlife.net/u/ubengineering)\ **Post date:** [July 6, 2010, 5:38pm UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/6 "2010-07-06T17:38:43Z")
> [@ubengineering](#): > > im sure ya checked fuses, so in that case try jumping the compressor, with the AC turned on take a paper clip and bend it so its shaped like 2 prongs, then place it in the evap tank (i think thats what the cylinder looking tank is) electrical hookup and see if it kicks on > [@psychopjv](#): > > Seriously an EVAP tank? It’s an accumulator/ or receiver drier. Some pressure switches can’t be jump because they are more than 2 prong and require a varied signal to be working properly. lol i was thinking evap canister!!! yes accumulator ---
**Author:** ![Carbonfiberhooded](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carbonfiberhooded/32/7608_2.png) [@Carbonfiberhooded](https://forums.speedlife.net/u/Carbonfiberhooded)\ **Post date:** [July 6, 2010, 6:09pm UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/7 "2010-07-06T18:09:25Z")
In my experiences, collision shops usually do the best work on AC systems. Just call around. ---
**Author:** ![95dime](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/95dime/32/7514_2.png) [@95dime](https://forums.speedlife.net/u/95dime)\ **Post date:** [July 7, 2010, 7:16pm UTC](https://forums.speedlife.net/t/ac-systems-who-to-go-to/157451/8 "2010-07-07T19:16:51Z")
so i hooked a gauge up, read like 15 psi. so i hooked a can up to fill it and head the compressor kick on and it jumped to like 20psi and the compressor turned off after like 2 seconds. took a while and got it to 28psi, then gave up. also noticed it sounds like my blower for the hvac is making a groaning noise that gets louder as i rev up the car. fml.