[MR2] Mk1 A/C problem

[David Thomas]

Gang,

I hope somebody can shed some light on a problem I have with the A/C on my
'86 Mk 1.  The end result is little cooling.  The symptoms arre high
pressure on the low side and normal pressure on the high side.  The
repairman was sure it was the expansion valve, replaced that (along with the
receiver-dryer) to no effect.  One suggestion was excess oil in the system,
so he took everything apart and drained it, including the compressor, and
made sure the oil was the proper type and quantity.  He has also converted
the system to R-134.  The compressor is a Denso rebuilt from Sparkplugs,
Inc. which I put in this spring.  After I had replaced the compressor and
charged the system, using propane, it worked fine for about two months then
the cooling dropped way off.  I tried adding more gas, but it didn't really
help, so I took it to a local garage which is run by a former Toyota
mechanic.  He has had the car for three weeks now and is ready to
surrender.  He says the only thing is can be now is the compressor, which he
suspects may have a bad reed valve somewhere internally.  Any constructive
suggestions will be appreciated.

Thanks, Dave Thomas