[W126 Coupe] Air Conditioning Diagnosis

[Dick Spellman]

Hi Dan:

If you have gauges great.  Then it's read the pressures and outside air 
temp compared to the correct refrigerant chart to be sure you have a 
full charge.

I'd go ahead and read the vent temps too on those that are blowing 
cold.  This will at least narrow the problem down to either mono-valve 
or bad vacuum elements.
 
Air bag to passenger side or no?

Dick

Dan Landiss wrote:

> on 5/10/2007 10:30 AM Dick Spellman wrote:

>> I think you have the following to troubleshoot:

>>

>> Mono-valve

>> Vacuum elements (2) on the fresh air/recirc door

>> Pressures high and low on the refrigerant circuit

>

> I'll check the pressures, but I'm betting that since cold air is blown

> until the engine coolant heats up, that's not it.

>

>> What year is the SEC and do you have a passenger air bag?

>

> 1991.

>

> Thanks!

>