Coolant temp & A/C problems

[SWFLHOMES]

My coolant temp is recently going over the typical 180 mark and hitting 200. I am in South florida and it's getting hot here. Also, the air conditioning is acting up. I had it checked at a A/C shop and the freon is ok. The left side blows cold then warm in intervals. The right side is blowing warm only. Is there anything that is interconnected between the two? The engine cooling fans seem to be working ok but it feels like the A/C servos are switched to outside air. With all of the servos and I better off taking it to the dealership? Can they tell if a servo is not functioning?

Thanks!

[eVoMotion]

I am working through a similar issue. No water temp change, but the cabin air temp changes from side to side and runs cold when I want hot. My mechanic hooked it up to the computer and said that he can see the action of each of the servos - cool - and they are all 100%. grrr.. So we are trying to change out the cabin air temp sensor to see if it fixes it.

[jagman1]

I am working through a similar issue. No water temp change, but the cabin air temp changes from side to side and runs cold when I want hot. My mechanic hooked it up to the computer and said that he can see the action of each of the servos - cool - and they are all 100%. grrr.. So we are trying to change out the cabin air temp sensor to see if it fixes it.

A year ago, my A/C needed recharge. My symptoms were warm air, and a significant temperature difference between the left and right sides. Recharged solved that. I was very confused initially at the difference in temp between the left and right sides. I thought I had a flapper valve issue. Low and behold the recharge fixed it all.

As for engine temperature it is not uncommon for the temp gauge to venture 2-3 needle widths right of straight up (whatever temp that is, I forget). If that's as hot as it's getting then you're fine.

[mudman2]

you need to see if there are some error codes logged. Sounds like AC control head.

[eVoMotion]

Unfortunately, I had no error codes. Best of luck.

[SWFLHOMES]

Mudman,

Can you elaborate on the A/C control head? From what I am noticing my problem seems to be a control issue. I get cold air intermittantly on the drivers side only. It seems like something isn't switching and the fans are possibly not kicking on all of the time.

Thanks,

Craig

[RFM]

All you need is a PIWIS diagnostic tool to check the system and actuate the relevant servos. After repair you can enjoy again.

[jagman1]

Have you checked the refrigerant pressure??? Just do this simple check before you start chasing much more $$ and complicated solutions. The system does weird things with low pressure, including exactly what you're describing.

[SWFLHOMES]

My local Porsche dealer charges $49.00 for an A/C system. I think I will have them figure it out. It's worth the $49.00!