Join Date: Jul 2019
Location: Orlando, FL
Vehicle: 1998 Mercedes SLK 230
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A/C System will not accept additional Freon???
OK! Here's the situation. I've been messing with the A/C system for a couple of days. I've searched all over for what I believe to be a typical problem concerning these cars and that's recharging the system.
According to the gauge on the Freon recharge bottle I purchased at Autozone, the system is slightly below full. I say only slightly because the compressor kicks on after i cycle the EC button. The first time I tried filling the system, the needle on the gauge didn't move. I sat there for a good 10 minutes waiting for something to happen: nothing (although there was a wave-like movement in the needle)!
Did a search and discovered the Duo-valve! Used the cleaning process that was linked to the tread. I also used a multi-meter to check the varying voltage between heat and A/C-that worked as well. Heck, I could even hear those duo valves clicking in movement, so those were good.
Now with all of that completed, she's still not creating cold air-only slightly cooler than ambient. I'm wondering if my issue is as simple as a possibly broken recharge gauge/bottle or is there another item on the HVAC system I need to consider? Thanks for your help!