Freightliner Columbia A/C problem

05 columbia a/c blowing but not getting cold

June 2011 compressor burnt out went to TA amarillo tx got it replace
New compressor $705

January 2012 a/c not gettin cold went to TA they told me compressor leaking throught the main bolt. The TA in amarillo put the old man bolt in the new compressor when they should have just put in a new bolt, this could have been avoided.
New compressor $free (warranty cover the compressor)
Labor $345 (I had to pay for problem they cause)

February 2012 a/c not getting cold went to TA low pressure switch bad
New switch + labor $138

March 2012 a/c not gettin cold (tired of going to TA)
Time for DIY

All this could have been avoided if they had replace the ac compressor, main bolt, ac dryer, and the high and low switch when the system caught on fire.

Where do I start?

 

Comming east on I40 into amarillo the ac compressor start smoking, I stop at TA in amarillo let them know and they change the compressor

Everytime I take it in they add die, in january found main seal leak on compressor replace compressor and main bolt then ac work

In february replace low pressure switch ac work

Today ac stop getting cold again

 

System have refrigerant, just check and see the a/c dryer fuse blown, I replace the fuse and a/c still not getting cold

 

You are 1000 and 1% correct about TA

 

Since all previous work was done by TA and have warranty on labor and parts I decide to go to another TA so they can check all previous work and hoping it would be some that was under warranty, I stop at TA in rogers mn they check for leaks and say "the air dryer was bad" replace the air dryer charge the system and within 24hrs and $391 parts and labor the ac stop working.
I contact them they told me go to a TA/PETRO have them check it
Soon as I got off the phone with the service manager I stop the payment

The previous ta in NC replace the low pressure that's connect to the ac dryer, I call the service supervisor and ask him how did his technician know it was the switch that was bad, he say they got a false reading. I ask him if the switch monitoring the ac dryer and the ac dryer bad will the switch will give a false reading he say yes. So I say the other ta told me it the ac dryer so your mechanic fix the wrong part because my switch wasn't bad. They don't want to own up to their mistake.

Now the ac not working after the new ac dryer, on the work order it says "quick connect fitting to ac dryer is wet possible sign of leaking.

They won't be touching my truck again, and I got a new ac dryer for free because they not getting paid for it.

They need to hire technicians and stop hiring mechanics.
Mechanics throw parts at it until eventually he throw the correct part, technicians test to find the part that's bad and fix it right the first time.