94 Crown Vic A/C, oil leak and alarm

[hemiguy]

Hi.
I tested the ac on my car that I posted a question about a week ago. The compressor turns when I jump the low pressure switch, so I guess it is good. However there is zero pressure on the suction side. So, can I hook up a can of 134a to see if it will take any, or do I need to pump it down first?

The car also has an oil leak just like my old 94 Marquis. Is that a common trait? I haven't examined it yet, so I'm not sure of the exact location of the leak.

The car has a Ford installed alarm in it, is there a way to permanently disable or remove it? the battery is dead in the key switch, so I have to push a button under the dash when starting it. Guess I could buy a battery, but who is going to steal a 13 year old retiree's car!

Otherwise it's a pretty decent car with only 83K on the clock.

Thanks,
J

[Davescort97]

If you've got the 351 Windsor engine the oil leak is the pressure sending unit behind the powersteering pump bracket. Diaphram is probably torn or leaking.

[Davescort97]

The advantage of pumping it down is that it will make any moisture in the system boil out from low vacuum. I would put on a new driyer-reciever and pump it down. Could just put in a couple of bottles of freon, the amount is under the hood in a sticker. I think it is 3 lbs.

[way2old]

Adding a little refrigerant to see if the system will work will not hurt anything. But remember that refrigerant does not evaporate so there is a leak in the system that needs repaired. The 94 Vic has the same motor as your 94 Marquis. They both have the 4.6L engine. If the Vic is a CVPI, look at the oil cooler as a source for the leak.