Close
A/c won’t accept r134
2003 Chevrolet Silverado 2500 HD

A/c won’t accept r134

(2003 Chevrolet Silverado 2500 HD)
2003 Chev 2500HD diesel with auto dual hvac control. No a/c clutch engagement with a/c, intermittent engagement with defrost. Low pressure SW shorted - no affect. Fuses & a/c relay ok. When a/c clutch jumpered, only small amount of Freon enters system - low pressure line prior to evaporator frosts up (33 degrees) so some fluid is entering but not much - Freon can not cold. Static pressure showed 60 psi on both high and low side with the amount of Freon in the system. Blower motor works for all speeds. A/C indicator lite on, temp set to 60 degrees. Both defrost and a/c blow warm, ambient air into truck. Almost acts like a blockage somewhere, but some Freon must be entering to have frosted low pressure line prior to evaporate.
What seems to make the problem better or worse? Truck drives and ides Normally
How long have you had this problem? Noticed 2weeks who - not hot here prior
Tags: a c, no compressor engagement, little acceptance of fre, chevrolet, silverado 2500 hd
1 answer & 1 comment
Popular Answer
on July 17, 2019

Hi + Low readings - system operating ?
Sign in to reply
on July 17, 2019

Need high and low side readings with compressor engaged (jumpered) - - refrigerant dispenser valve CLOSED.
General Diagnosis
$88 - $111 Learn More
on July 17, 2019

Hi + Low readings - system operating ?
Sign in to reply
on July 17, 2019

Need high and low side readings with compressor engaged (jumpered) - - refrigerant dispenser valve CLOSED.

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
It was working fine just leaking.
The exhaust fluid is full but check engine for it says 83%