breton wrote:
> Hi All,
>
> I bought a 93 cherokee sport a half year ago and the guy told me the
> ac does not work. I checked the repair records and saw a r134a
> conversion and charge by a professional in 2004. I tried charging it
> myself today. I located the low pressure port (bottom one on the back
> of the compressor with blue cap). First the system wouldn't except any
> gas, it just made the dial on the can of coolant shoot up..
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^

STOP right there!

You used the high side port. The connector off the compressor is
the high-side no matter what the cap color is.

The low side is between the condenser and the evaporator. The
smallest line in the system that runs from the firewall.

What bugs me is the connector should not have fit unless the
shop that did the mod buggered something up.

--
DougW

 

breton wrote:
> Hi All,
>
> I bought a 93 cherokee sport a half year ago and the guy told me the
> ac does not work. I checked the repair records and saw a r134a
> conversion and charge by a professional in 2004. I tried charging it
> myself today. I located the low pressure port (bottom one on the back
> of the compressor with blue cap). First the system wouldn't except any
> gas, it just made the dial on the can of coolant shoot up..
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^

STOP right there!

You used the high side port. The connector off the compressor is
the high-side no matter what the cap color is.

The low side is between the condenser and the evaporator. The
smallest line in the system that runs from the firewall.

What bugs me is the connector should not have fit unless the
shop that did the mod buggered something up.

--
DougW

 

breton wrote:
> Hi All,
>
> I bought a 93 cherokee sport a half year ago and the guy told me the
> ac does not work. I checked the repair records and saw a r134a
> conversion and charge by a professional in 2004. I tried charging it
> myself today. I located the low pressure port (bottom one on the back
> of the compressor with blue cap). First the system wouldn't except any
> gas, it just made the dial on the can of coolant shoot up..
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^

STOP right there!

You used the high side port. The connector off the compressor is
the high-side no matter what the cap color is.

The low side is between the condenser and the evaporator. The
smallest line in the system that runs from the firewall.

What bugs me is the connector should not have fit unless the
shop that did the mod buggered something up.

--
DougW

 

> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>

If it's a Sanden compressor, it can have the low side port on the
compressor, or even both low and high side ports on the compressor.

Also, the smaller of the two lines, is always the high pressure side.

The low pressure line is always the larger diameter line.

Spdloader

 

> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>

If it's a Sanden compressor, it can have the low side port on the
compressor, or even both low and high side ports on the compressor.

Also, the smaller of the two lines, is always the high pressure side.

The low pressure line is always the larger diameter line.

Spdloader

 

> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>

If it's a Sanden compressor, it can have the low side port on the
compressor, or even both low and high side ports on the compressor.

Also, the smaller of the two lines, is always the high pressure side.

The low pressure line is always the larger diameter line.

Spdloader

 

> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>

If it's a Sanden compressor, it can have the low side port on the
compressor, or even both low and high side ports on the compressor.

Also, the smaller of the two lines, is always the high pressure side.

The low pressure line is always the larger diameter line.

Spdloader

 

On May 7, 6:06 pm, "DougW" <post.repl...@invalid.address> wrote:
> breton wrote:
> > Hi All,
>
> > I bought a 93 cherokee sport a half year ago and the guy told me the
> > ac does not work. I checked the repair records and saw a r134a
> > conversion and charge by a professional in 2004. I tried charging it
> > myself today. I located the low pressure port (bottom one on the back
> > of the compressor with blue cap). First the system wouldn't except any
> > gas, it just made the dial on the can of coolant shoot up..
>
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^
Good call, this makes a lot of sense. I'll give it another look
tomorrow. I'm pretty sure what I was attaching it to was a new fitting
though (from the retrofit).

Best,
Breton

>
> STOP right there!
>
> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>
> What bugs me is the connector should not have fit unless the
> shop that did the mod buggered something up.
>
> --
> DougW

 

On May 7, 6:06 pm, "DougW" <post.repl...@invalid.address> wrote:
> breton wrote:
> > Hi All,
>
> > I bought a 93 cherokee sport a half year ago and the guy told me the
> > ac does not work. I checked the repair records and saw a r134a
> > conversion and charge by a professional in 2004. I tried charging it
> > myself today. I located the low pressure port (bottom one on the back
> > of the compressor with blue cap). First the system wouldn't except any
> > gas, it just made the dial on the can of coolant shoot up..
>
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^
Good call, this makes a lot of sense. I'll give it another look
tomorrow. I'm pretty sure what I was attaching it to was a new fitting
though (from the retrofit).

Best,
Breton

>
> STOP right there!
>
> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>
> What bugs me is the connector should not have fit unless the
> shop that did the mod buggered something up.
>
> --
> DougW

 

On May 7, 6:06 pm, "DougW" <post.repl...@invalid.address> wrote:
> breton wrote:
> > Hi All,
>
> > I bought a 93 cherokee sport a half year ago and the guy told me the
> > ac does not work. I checked the repair records and saw a r134a
> > conversion and charge by a professional in 2004. I tried charging it
> > myself today. I located the low pressure port (bottom one on the back
> > of the compressor with blue cap). First the system wouldn't except any
> > gas, it just made the dial on the can of coolant shoot up..
>
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^
Good call, this makes a lot of sense. I'll give it another look
tomorrow. I'm pretty sure what I was attaching it to was a new fitting
though (from the retrofit).

Best,
Breton

>
> STOP right there!
>
> You used the high side port. The connector off the compressor is
> the high-side no matter what the cap color is.
>
> The low side is between the condenser and the evaporator. The
> smallest line in the system that runs from the firewall.
>
> What bugs me is the connector should not have fit unless the
> shop that did the mod buggered something up.
>
> --
> DougW