this past week i installed new compressor,condensor,drier,hoses,expansion valve,on my 93 d150 5.2.
took it to a good shop to have them charge it with r134a,worked good monday,tuesday, wednsday on my way home from work,it would not turn on hot air for 27mi. in 100 degree heat{that sucks]
so i stopped by the a/c shop on my way home.they checked it out no leaks. then it started to work??
they said maybe electrical problem,anyone know what to look for??
i spent way to much money so far,so i would rather see if i could fix it myself. it just seem like it will work when it wants to,i need it to be more reliable. thank you

 

Curious? How much did you spend?

If your freon is not low or anything I would check the switch. My dads truck has a similar problem where sometimes it works and sometimes it doesnt. Idk if its his switch or something else but its been like that for years now.

 

spent about 600 in parts,installed myself,and 250 at a good a/c shop to evacuate the system,add oil,and be converted to 134a.
thank you

 

Thanks

 

well been driving around all day today,its 98 deg. a/c worked all day.
went out again it worked fine to where i was going,on the way back,it was not working. got home checked for power at the compressor clutch,nothing. unpluged cycle switch to check it for power,then the compressor clutch decided to come on and work?? i think this truck is haunted ?? what to look or check for anyone know?? thank you

 

Yeah Id check the freon level

 

yea, i took it back to the a/c shop they did check it for leaks, did not find any. they said its electrical. i personally think dash switch or relay going bad but not sure. just asking if anyone knows where to look first,or how to troubleshoot this. thank you

 

ok today on way home from work got on highway 5min later turned a/c on,did not get cool. i drove for about 15mi.pulled over checked under hood a/c clutch not coming on. i shut truck off,shut a/c off. i restarted truck turned a/c on and it was working,drove another 12mi. by the that time i was home and still working ice cold. what would shutting it off have to do with anything making it work??? thank you

 

p.s. it was 100deg. today with a heat index of 104deg.

 

Hey Aje,

I did some quick searches about your AC problem and two things keep coming up over and over again while I was reading. WOT relay and AC transducer. The Wide Open Throttle relay turns the compressor off for full throttle and could be faulty. The other item, transducer, I didn't find a good explaination for. Might be something to look into. Hope this helps. I know it's tough once you've dropped your money at one place but you might consider a second opinion.

This is some killer heat wave we are in early this summer. When I get in my car about 5 pm, the steering wheel is so hot you can barely touch it. I even stick my sunglasses in the AC vent to cool them down before I put them on. Good Luck with your AC.