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My a/c port does not match the size of the coupling on the charging hose

object16 on Sun December 14, 2008 11:59 PM User is offline

Year: 1995
Make: Mitsubishi
Model: Mirage
Engine Size: 1.5l
Refrigerant Type: 143a

Hi, I bought the charging kit from Wal Mart, and it consists of a hose with a brass coupler at each end. One end is supposed to slip over the car's a/c port, but the port is just slightly too big. the kit came with a bunch of adapters, and the brass coupling fits on one end of one of the adapters, but the other side of the adapter does not couple with the port - i think that adapter was for "retrofitting, haha" and r12 system or something. i checked my manual, and the car definitely is 143a. this must be a very oddball size port. has anyone heard of this, and what can be done - thanks, paul.

object16 on Mon December 15, 2008 12:27 AM User is offline

I discovered the problem. Apparently there is something called a high side, and a low side. I was trying to put the 134a into the high side, which can cause the can to rupture. i have to look and find the low side, which should be a threaded fitting, and I believe my kit will probably have the adapter to screw on to this.

mk378 on Mon December 15, 2008 9:49 AM User is offline

Don't charge blindly. Also NEVER charge any sort of a "stop leak" product (use only plain R-134a). Those two reasons are enough to return the whole mess to Wal-Mart and invest in some proper tools before proceeding.

Both the high side and low side on a R-134a car are standardized push on fittings. They are different sizes (low side is smaller) so people won't as easily blow themselves up with a Wal-Mart kit (they can still ruin their car's A/C system though).

Edited: Mon December 15, 2008 at 9:50 AM by mk378

chris142 on Thu December 18, 2008 12:07 AM User is offline

It sounds like you have never fooled with an AC system. You cant just shoot it up and have it work properly and you should have a basic understanding of how the system works to prevent some very expensive damage to the system.

I'm recomending that you read up on AC systems before you mess with yours. Does anybody know if the site sponsor sells AC repair books? Your next choice is the library or the auto parts store.

HECAT on Thu December 18, 2008 6:09 AM User is offline

A/C Repair Manual

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HECAT: www.hecatinc.com You support the Forum when you consider www.ackits.com for your a/c parts.

FLUSHING TECHNICAL PAPER vs2.pdf 


Edited: Thu December 18, 2008 at 6:11 AM by HECAT

TRB on Thu December 18, 2008 11:42 AM User is offlineView users profile

Quote
Originally posted by: mk378
Don't charge blindly. Also NEVER charge any sort of a "stop leak" product (use only plain R-134a). Those two reasons are enough to return the whole mess to Wal-Mart and invest in some proper tools before proceeding.



Both the high side and low side on a R-134a car are standardized push on fittings. They are different sizes (low side is smaller) so people won't as easily blow themselves up with a Wal-Mart kit (they can still ruin their car's A/C system though).

Agree with what both mk378 has stated and the link Hecat provided for a general auto a/c manual. Auto a/c is not a hard task to take on. You do need a few tools which are not provided in the Wal-Mart kit, its also known as a "Death Kit".



-------------------------
When considering your next auto A/C purchase, please consider the site that supports you: ACkits.com
Contact: ACKits.com


Edited: Thu December 18, 2008 at 11:46 AM by TRB

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