My 93 XJ's compressor won't cycle, it goes on but, does not shut off. I put
about 40 psi of R34 ( it's converted). There is only black in the little eye
hole. 75 deg. air blows out the vents.
Do I need more freon or is this perhaps electrical. Any help here would be most
appreciated.

Thanks,
Rich

 

The recommended way to fill R134a systems is by weight. Evacuate the
system, and then fill to system capacity with refrigerant. This sounds easy
until you start thinking about the equipment you need to do it properly. If
you don't care too much about releasing greenhouse gases into the
atmosphere, then you can get by with less equipment. I didn't say that
though.

If you are sure that the system is near empty, then you can just put the
recommended amount of refrigerant into it, and hope for the best. I have
had this work, but it is not the best way. Many people who try this wind up
putting too much refrigerant in.

If you are planning to fill with the gauge method (not recommended with
R134a) you really need both high and low side gauges. The following is an
excellent basic automotive air conditioning service manual. Buy this book;
it is a big help. I have no connection with the seller, except for buying
stuff from them now and again.

http://www.acsource.com/product.asp?0=204&1=205&3=8

Earle

"SemperFi1110" <semperfi1110@cs.com> wrote in message
news:20030719193105.24610.00000150@mb-m28.news.cs.com...
> My 93 XJ's compressor won't cycle, it goes on but, does not shut off. I
put
> about 40 psi of R34 ( it's converted). There is only black in the little
eye
> hole. 75 deg. air blows out the vents.
> Do I need more freon or is this perhaps electrical. Any help here would be
most
> appreciated.
>
> Thanks,
> Rich

 

semperfi1110@cs.com (SemperFi1110) wrote in message
<20030719193105.24610.00000150@mb-m28.news.cs.com>,

>My 93 XJ's compressor won't cycle, it goes on but, does not shut off. I put
>about 40 psi of R34 ( it's converted). There is only black in the little eye
>hole. 75 deg. air blows out the vents.
>Do I need more freon or is this perhaps electrical. Any help here would be most
>appreciated.

First, it's R134a.

Second, you're over-charged. Using a sight-glass is not the correct
way to charge an R134a system. Buy the gauges or take it to a
professional.

 

ditto on the weight thing.....

--
Carlo F. Serusa, Jr. RPh
carlo.jr@comcast.net
'98 Sahara TJ - '89 YJ - '79 Scout II
O|||||||O
'92 Explorer '65 Mustang


"steelwheel" <invalid@ddress.nospam> wrote in message
news:3f1a01d7.15939910@low.range...
> semperfi1110@cs.com (SemperFi1110) wrote in message
> <20030719193105.24610.00000150@mb-m28.news.cs.com>,
>
> >My 93 XJ's compressor won't cycle, it goes on but, does not shut off. I
put
> >about 40 psi of R34 ( it's converted). There is only black in the little
eye
> >hole. 75 deg. air blows out the vents.
> >Do I need more freon or is this perhaps electrical. Any help here would
be most
> >appreciated.
>
> First, it's R134a.
>
> Second, you're over-charged. Using a sight-glass is not the correct
> way to charge an R134a system. Buy the gauges or take it to a
> professional.