AC Comressor lock-up

[bgonzo]

AC Compressor lock-up

I have a 2001 Tahoe with Rear Air. After replacing the comressor, the air worked great for 3 weeks, and then the compressor locked up during our trip to Florida. Made noise and a terrible melting plastic smell. Just for the heck of it, I tried it again when I got back, and it worked great. Then a few weeks later, it locked up again. Seems to lock up when its real hot outside.

I cant figure it out. Is it possible that has too much refrigerant? Any other thoughts?

 

[bgonzo]

does anyone know what the correct gauge readings should be on an 80 degree day?

 

[clkelley]

Yes, it is possible that you have either too much or too little freon, the proper gauge reading is suppose to be 40psi I believe on the low pressure side. But I am not 100% on that.

 

[bgonzo]

How can the compressor lock-up be caused by "low pressure"?

My gauge readings are 35 and around 150 (when the compressor is turning of course).