87 300D Ac blowin hot, smell freon inside car - Page 2 - PeachParts Mercedes-Benz Forum

a2t · #16 08-06-2009, 01:59 PM

Quote:

Originally Posted by zeke

To me, rain is the smell of low freon, but not the freon itself. I think it has to do with incomplete or partial de-humidification. Freon out of the can has a (very) slight chemical odor. Never smelled pine-sol like smell.....could that be the oil rather than the freon itself?

Yeh I guess so. The stuff is really pungent!

Well its blowing cold again, although the shop was less than impressed with my low side compressor reading of 50 psig. He thinks the compressor is weak.

It seems to blow about as cold as before and no more Freon smell so Im hoping this is fixed…

zeke · #17 08-06-2009, 03:34 PM

good luck - working AC is one of life's great small joys!

was that 50psi at 1500rpm or at idle?

#18 08-06-2009, 07:39 PM

Quote:

Originally Posted by dannym

Leaking oil is a definite sign of a leak in any refrigerant system.

You lucked out that it's not the evaporator core.
Your also lucky your TX valve is on the firewall. I have to get up under the dash to get to mine.

Danny

Actually I've changed them on both of these cars and the one under the dash is easier as far as I'm concerned. That is as long as you don't mind working while upside down. There is more room on the 123. The 124 is buried back in there in pretty tight quarters.

a2t · #19 08-08-2009, 05:50 PM

yeah 50 psi at idle. its blowin snowballs now on the hwy, typical warm air at idle like its always been. im tempted to trigger in the aux fan via the non-working antenna switch on dash to help it out manually.

a2t · #20 08-12-2009, 02:10 PM

I still smell freon in the morning when I start engine for 1st 5 sec. something must still be leaking...

zeke · #21 08-12-2009, 02:40 PM

Have you used a sniffer in the car when you are smelling the smell?

Maybe a PO shoved one of those taxi-cab style pine fresheners down one of your vents
:b

seriously, though - probably should use a sniffer to verify that there is refrigerant in the cabin when you think there is....

a2t · #22 08-12-2009, 06:38 PM

yeah i think its still the exp valve is still leaking, i can hear it hiss a little right after shut down, dont know if that is normal. i will take it back in so they can use a sniffer on it, i dont have 1 (how much are they??)