My observation of the compressor sysling was after it had been sitting for four hours after the last drive - it was much cooler. The engine temp was around 90C putzing around town in the 102F heat - I didn;t think that was too bad, thoughI'd perferred that it was 85C. I think the engine would have been hotter if the fan wasn't pulling enough air through the condensor/radiator. As i noted in the reply to Peter's response, there is a note on a service ticket stating that the expansion valve will need to be replaced, back in 2008l. I don't know why they made that prediction.
On Wed, Aug 11, 2010 at 8:46 PM, Mitch Haley <[email protected]> wrote: > Mitch Haley wrote: > > If you are very low on charge, the low pressure switch will cut out the >> compressor. If there's a high pressure switch, that can cycle the compressor >> if system is overcharged, has air in it, or if the expansion valve is >> clogged. >> > > If it worked great yesterday, either you lost charge overnight, or perhaps > the fan doesn't draw air through the condenser and the high pressure switch > shuts it down when the condenser hits critical temp. Or the expansion valve > suddenly became stuck or clogged? -- OK Don 2001 ML320 1992 300D 2.5T 1991 300E 1990 300D 2.5T _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
