Ok i have a 1990 toyota pickup 4x4 with a 22re. Last week i check the freon in my ac system "which was good" and now my ac compressor will not come on. i am not getting power to the compressor and i check the same wire closer to fire wall and still no power. i have check the fuse on the passanger side kicker panel and both are good. also my blower and everything else works just no cold and i live in Texas so i need AC. any advice would be helpfull. Iwas thinking mybe the AC relay but not sure???? What do yal think???

 

I re-titled your thread as it was very ambiguous.

It's best to title your threads with the search feature in mind, title it something that it will pick up on so it's easier for other members to find this thread if/when they have the same issue.

Fink

 

Ok thanks!!!

 

Bump!!!!

 

I also came up with the theroy that maybe it could be the pressure switch also but im looking around and can not find it. I was gonna jump it over and see if that kicked it on but no luck.

 

I think the low pressure switch is inside inside the "cold box" under the dash....

Repo

 

http://personal.utulsa.edu/~nathan-b...ditioning.html

I love this link!

 

Thanks for the info helped me a bunch!!!

 

hey yotamonsta,
what did that end up being, i have the same problem with mine, it worked for a while then today i pushed the ac button and it will not turn on(the light) and no cold ac comes out.

 

I havent worked on it this week at all i been working 12hr shifts so havent had any time to work on it.
I am going to try replaceing the relay tom morning and if that dont work try jumping the pressure switch.
I will keep you posted and let you know what i find.
Have you checked to see if you are getting power and checked all your fuses?

 

ok, sounds good, i just dont know which fuse it is, the 22re doesnt have many fuses, i will also look tomorrow, please keep me posted

 

the fuse for the AC and heater are on the right sidekick panel it kinda hard to find...you will have to take the glove box out but it not hard!!!

 

did u ever figure it out ?

 

Subscribed.... .and waiting for fix, lol.

You're CERTAIN you've got enough Freon to trigger the clutch on the AC? Mine hissed fine but was under(whatever the minimal requirement was) so it wouldn't engage the clutch. Filled it up to full, 'voila'. Sorry if you've verified everything, ....just throwing it out there in case, lol. You've put power right to the Unit and the clutch still wont engage?

 

inquiring minds want to know what is going on...

 

Sorry guys for not updating i havent had ANY time to work on my truck until today.

So instead of working on my AC i started my SAS!!

Chefyota.... it never even crossed my mind to try running a jumper wire straight to the compressor i will try that first thing tom and go from there!! And i just serviced it and i put a little bit of freon in but it wasnt very low, but i will check the pressure tom also...Thanks for the help and i will post update!!!

 

Ok here is what i got, I ran a jumper wire from the battery straight to the compressor the cluth kicked on but never blew cold.
I also hook up my gauge to see what the pressure was but what i oper the valve it just rapped all the way around to the other side and peged out high pressure!!

Any suggestions (im kinda think my compressor may be bad but im not very inclined on Ac stuff just know how to service... Thanks

 

is the (valve inside your a/c lines clogged up)

there is a correct name for for this valve but i cant remember right now..

maybe a protorional valve but i cant remember

 

You mean the expansion valve? i dont think it is because it was working fine befor...

Im really kicking myself in the ass now i should of just left it alone haha!!!

 

well did into some books on A/C you can learn some thing and share it with the ret of us..

that may be it, isnt there a orfice filter that is inside the line that has to be changed out every so often...