‘05 roadster. AC works intermittently? Added a little Freon this am. Compressor engages.
maybe sticky evap valve? Looking for similar experience? What is the charge capacity? Looking under hood could not find an ac sticker.
thanks all.

 

Had it on yesterday and it did work for a minute. Could not locate a high side port. Looks like there is a t off the dryer, is this for a high side port? Any body know of a fitting?I’m in Arizona, so it’s 113 outside now.
Maybe the inside temp sensor?
if I fire the parts cannon is a slk350 the correct car to pick on fcp euro? Or I am open to other sources.

 

I have tried the search function, maybe I’m doing it wrong, but don’t get any results searching “AC”

 

Ordered this. Hope it will work.

 

SLK fourm says if the Freon charge went low it has to be reset with a scanner. Haven’t seen anything to that effect here. Is it a thing?

 

Do not believe any reset is required for the Crossfire/R170. R171+, probably yes, but that does not affect us.

 

Thanks for that info, that will make things easier. I am leaning toward that I probably Need a new expansion valve. I’ll probably get a new dryer too. Any body have any experience with the scanner I posted before?
fcp euro doesn’t list parts for a slk320, only the SLK350. Is this what I want, or does anyone have correct part numbers?

 

For the A/C system parts, go to Rockauto.com They'll have what you need, for a lot less.

 

Good point, and they actually list a Crossfire!

 

Anybody have the capacity specs on this system?

 

Thanks, rock auto is way cheaper! Will get parts next week and update.

 

I believe the freon capacity is listed in the forum's free downloadable service manual. Make sure you do a proper vacuum on the system to draw out ALL the moisture before injecting the freon. Best if you have a gauge set, so you don't overcharge (you can damage the system). IF not. do the replacement of the parts and bring it to an A/C guy to install the freon (the parts needed to properly install the freon is VERY EXPENSIVE) Good luck!


.

 

BTW, the capacity of a Crossfire A/C system is 1.97#.

 

Thanks guys, I have gauges and a vacuum pump. Should get parts on Monday, just have to find time to install them.

 

Remember to run the engine, drive it around, whatever and get it up to full running temp under the hood. Then shut it down and hook up the vacuum pump. The hotter the engine and engine compartment is when you start evacuating the system the more moisture you'll pull out with the pump. The pump isn't just to evacuate the system of air as best it can but to also pull all moisture out of the system as well. Higher temp + vacuum = lower boiling point of water in the system under the vacuum the pump can create. You get far more moisture out of the system if you place it under vacuum when everything is hot.