Vent Temps Unsatisfactory - PeachParts Mercedes-Benz Forum

brewtoo · #1 06-17-2007, 09:59 PM

Quote:

Originally Posted by Arthur Dalton

Aux fan running ???

Jumper this sw and see if fan comes ON

Arthur, you're getting quite a work-out on the aux fans this year!

Arthur Dalton · #2 06-18-2007, 06:54 AM

Quote:

Originally Posted by brewtoo

Arthur, you're getting quite a work-out on the aux fans this year!

It's that time of year again...pretty hot everywhere , too...

It is amazing how far along this Forum has come as far as DIYer a/c knowledge...I haven been here since day one, and I can remember when no one would even dare touch their a/c system [ or know anything about it]..so, the Forum has done well on a/c edumacating it's members in this highly specialized field......
There are reg guys here who now know more about their a/c systems than the guy they used to take it to.
Gotta love it ...........

emerydc8 · #3 06-18-2007, 07:59 AM

I don't know about my knowing more than the guy I used to take it to, but it sure has helped me. Thanks again!

Arthur Dalton · #4 06-18-2007, 08:09 AM

I can remember when a/c was a new car thing.... our running joke when a guy would ask " "..uuum , What kinda' Gas do you put in there?? "
.....of course our answer was .."High-Test !! "

E150GT · #5 06-18-2007, 08:10 AM

Aux fan works because when i replaced the drier I bought the little red leads that everyone says go bad and it started working again. Should the expansion valve be hot on one side? I know the front of it gets hot and the back is cold.

Arthur Dalton · #6 06-18-2007, 08:30 AM

<

The red leads ?

Are you talking about the sw with the pigtail leads ?
Do you have gauge readings ?

E150GT · #7 06-18-2007, 08:55 AM

Quote:

Originally Posted by Arthur Dalton

<

The red leads ?

Are you talking about the sw with the pigtail leads ?
Do you have gauge readings ?

Yes those leads that go on the drier. I do not have any gauge readings.

david s poole · #8 06-18-2007, 10:01 AM

if you can get me gauge readings while at idle and at 1500 rpm i can tell you what is wrong with it.

Arthur Dalton · #9 06-18-2007, 10:21 AM

Quote:

Originally Posted by E150GT

Yes those leads that go on the drier. I do not have any gauge readings.

OK... That is the aux fan sw , but very seldom does that sw go bad..people often incorrectly change it b/c they think it goes bad, but the real reason the fan does not come on is b/c they are short of refrigerant [ not allowing high side to get to trigger point of the sw]
..anyway, gauges would be needed for pressure readings.
Did you use an original R12 EV?
..also, You may have overcharged...