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05 Crown Vic Police Interceptor needs repair

keebler on Thu September 04, 2014 11:10 PM User is offline

Year: 2005
Make: Ford
Model: Crown Victoria
Engine Size: 4.6L
Refrigerant Type: R-134A
Ambient Temp: 100
Country of Origin: United States

2005 Crown Victoria Police Interceptor

A/C needs repair and I'm looking for advice on what to replace as a precaution.

I bought the car more than five years ago and the A/C has been working well for the last 80,000 miles. The car now has 145,000 Miles on the odometer.

Last Summer everything was fine but the A/C started working mediocre near the end of the Summer.

I'm guessing, and from past experience, I'm pretty sure that vent temperatures were originally in the mid 40 Degree range and slowly rose to mid-50's by the end of summer. I added a can of R-134 and things improved until Fall. I stopped using the car and it has been parked since last Winter.

I noticed that the Schrader Valve on the high side port is leaky because the plastic cap gives a momentary "psst" every time I remove it.

I also see that my accumulator has a "blanket" around it and it seems more oily and dirty than it should be. I'll bet it has a leak.

There's no other signs of leaks in the visible parts of the system.

By the way, I replaced the blend door motor and I'd be willing to give advice to any other Crown Vic owners contemplating the same. It was difficult to replace but not as difficult as I was expecting. I'm certain that the blend door problem is not related to my A/C system quitting.

The car has been parked for more than six months and now the compressor won't engage when I turn on the A/C. I'm certain that most of my R-134A is gone. No surprise.

I expect to replace both schrader valves, the accumulator, the expansion valve and to add oil. I'll charge in to a vacuum after replacing the parts.

I have a new A/C vacuum pump that I used once ten years ago. I hope it's still good.

The condenser is bent at the lower edge due to an impact with something like a snow drift or an animal. It has been this way since I got the car five years ago. I don't think its leaking, but I'm inclined to spring for a new one since I will have the system open.

I'll need to know how much oil and which kind. Any other suggestions? I need a shopping list so I can budget for the expense and then place my order.

mk378 on Fri September 05, 2014 11:19 AM User is offline

Jacketed steel accumulators are prone to rust underneath the insulation and leak. You can take the insulation off and confirm this. This is a CCOT system so it has an orifice tube instead of an expansion valve.

Edited: Fri September 05, 2014 at 11:21 AM by mk378

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