Car: 1973 Mercury Capri 2.0, four speed. Lovingly restored over the past three years. The car has Ford aftermarket air conditioning, recently serviced with R-12 (past two weeks) and I have never used it until this past weekend (I bought the car and then restored it). We used it in 90 degree heat and this little car did great even in the mountains of W.Va (60 mph uphill with A/C!) But I digress. For five minutes after being turned on, the A/C cools as expected - a real champ – no issues. Then, it begins a cycle like this: The air starts to get progressively warmer for about 10 seconds. Then, there is a squeak, a drop in motor rpm as the A/C/ clutch engages, and it has cold air again for 20 seconds. Then the cycle again. This is the behavior whether at idle or at highway speed. It has its own two knob control panel – not connected to the heater controls. The fan speed is on high and the “cold” knob is turned all the way cold. Turned “warmer” it does as expected - very little cold air. It seems like a thermostatic control is telling it to disengage the clutch even though it should not – the cabin is cool but not cool enough to justify that. Any thoughts? Picture of the car attached.
Bowie Maryland USA
1954 Citroen Traction Avant