Quote:
Originally Posted by compu_85
At least on the W126 the aux fans are not switched on based on pressure, they are turned on based on temperature.... The two are very related though 
You need to get a set of gauges and see what is going on. If the expansion valve is blocked up or sticking the high side pressures could spiral out of control.
In general 35*F below ambient is doing fairly good.
-Jason |
Point taken. The P/T relationship is so close as to almost be the same thing in a working system.
I'd echo the gauge suggestion. If you're going to borrow some that have touched 134 & PAG oil, make sure to buy some flush first and clean those puppies out. Of course, you can probably get a used set on ebay for around $30; just make sure the needles aren't pegged (too much pressure on low side).
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Unless stated otherwise, any question I ask is about my greymarket 1985 380SEL.