A/C won't hold freon

[Marauder85]

Anybody know of a typical problem that causes our cars to leak freeon? Somebody told me the accumulator but wanted to ask Marauder peeps before I start buying parts, when I fill the system it's frosty, usually takes 2-3 days to completely leak out, any help would be appreciated, thx guy's :beer:

[mm svt]

Put dawn dish soap in a spray bottle with water and spray all connections, best done when not running, including where the test hoses connect, if nothing visible then spray the compressor shaft seal, if not there possibly the evaporating core.

[69marquis conv]

Check for rust on the receiver/dryer under the foam insulation.

[fastblackmerc]

Most common is the receiver dryer. It's location and the fact that is insulated causes rust. Check the bottom of it.

Replace it with an aluminum one. Also replace all the seals and the orifice tube.

[NorthShoreChiMM]

just had the accumulator done. mechanic said the whole bottom was rusted out

[BAD MERC]

There's a probability your PAG oil has a tracer dye in it. Get a black light in the dark and look. The leak will fluoresce quite evidently.

[Marauder85]

Very helpfull info, thx guy's :beer:

[a_d_a_m]

I've personally experienced both in the past year: receiver/dryer, &low pressure line (aka liquid line).

As stated above, the receiver/dryer usually rusts out. One common sign of this would be a mystery leak of stinky oil under your front passenger side.

I also had a blown liquid line, which sucked, as it was brand new 3 months prior... :(

[Marauder85]

I've personally experienced both in the past year: receiver/dryer, &low pressure line (aka liquid line).

As stated above, the receiver/dryer usually rusts out. One common sign of this would be a mystery leak of stinky oil under your front passenger side.

I also had a blown liquid line, which sucked, as it was brand new 3 months prior... :(

I've looked at it today and everybody including a Ford mechanic I know is right, the bottom of it is rusted, I live in Mass and unfortunately I had to drive it last winter, salt is bad here. Does anybody know where a aluminum can be bought? Can't seem to find one, thx guy's :beer:

[mm svt]

I've looked at it today and everybody including a Ford mechanic I know is right, the bottom of it is rusted, I live in Mass and unfortunately I had to drive it last winter, salt is bad here. Does anybody know where a aluminum can be bought? Can't seem to find one, thx guy's :beer:



Rock auto part # MI YF3357

[Marauder85]

Rock auto part # MI YF3357

Sweet, thx bro :beer:

[the fat bastid]

Yup, it was my dryer rotted out as well. Why the hell is it insulated? my mechanic was like "Yeah, i don't know, seems to just make it rust faster."

[mm svt]

The new one has a plastic casing in
Place of the insulation

[jimbok1951]

Most common is the receiver dryer. It's location and the fact that is insulated causes rust. Check the bottom of it.

Replace it with an aluminum one. Also replace all the seals and the orifice tube.

MM SVT
Quote:
Originally Posted by Marauder85 https://www.mercurymarauder.net/forums/images/buttons/viewpost.gif (https://www.mercurymarauder.net/forums/showthread.php?p=1537761#post1 537761)
I've looked at it today and everybody including a Ford mechanic I know is right, the bottom of it is rusted, I live in Mass and unfortunately I had to drive it last winter, salt is bad here. Does anybody know where a aluminum can be bought? Can't seem to find one, thx guy's :beer:


OP stated
Rock auto part # MI YF3357
it's Steel not aluminum

Part # & vendor for aluminum anybody ?

Thanks

[Marauder85]

MM SVT
Quote:
Originally Posted by Marauder85 https://www.mercurymarauder.net/forums/images/buttons/viewpost.gif (https://www.mercurymarauder.net/forums/showthread.php?p=1537761#post1 537761)
I've looked at it today and everybody including a Ford mechanic I know is right, the bottom of it is rusted, I live in Mass and unfortunately I had to drive it last winter, salt is bad here. Does anybody know where a aluminum can be bought? Can't seem to find one, thx guy's :beer:


OP stated
Rock auto part # MI YF3357
it's Steel not aluminum

Part # & vendor for aluminum anybody ?

Thanks

Yes I'm aware stock is steel, I've already ordered the aluminum one but thx

[jimbok1951]

Please share vendor & part number

[Marauder85]

Please share vendor & part number

Rock auto part #YF3357

[Marauder85]

Well finally got the receiver/dryer in, the picture shows that steel is a bad idea, did a complete service and now it's nice and frosty and holds freeon, definitely go aluminum, especially if your on the east coast :beer:

[Dragcity]

Aluminum and salt don't play well together either. I replaced mine with aluminum unit from NAPA. I did not replace the foam cover. Mine is a summer ride now anyway.

[fastblackmerc]

Aluminum and salt don't play well together either. I replaced mine with aluminum unit from NAPA. I did not replace the foam cover. Mine is a summer ride now anyway.

Maybe paint the aluminum with POR 15 and a good enamel top coat or have it powder coated.

[Marauder85]

Ok accumulator replaced still leaking freeon, I added die and this was the result, die on the firewall where the a/c is going through the firewall, any suggestions? :beer:

[Marauder85]

Pic 1 of the firewall

[Marauder85]

Picture 2, pics were taken with a UV flashlight

[RF Overlord]

If you're seeing dye on the firewall, then either the evaporator is leaking, or there's an issue with the connections to it. Try new o-rings first.

[jimbok1951]

Most common is the receiver dryer. It's location and the fact that is insulated causes rust. Check the bottom of it.

Replace it with an aluminum one. Also replace all the seals and the orifice tube.


Did you replace seals as suggested when accumulator was done ? Lot of good info on this site from knowledgeable people.