|
On the W210, the first sign of a declining charge of R134 is a temp difference from left to right. It's the way the evaporators are configured.
Don't just top-off the system. These are sealed systems and odds are you have a leak somewhere.
Also, don't rely on either high side or low side pressure readings. Low side are nearly constant thanks to the variable pressure nature of the system. High side pressure values can be all over the map depending on cooling requirments.
|