Edited because I'm still working on my first cup of coffee, which means that not only can I not see colors yet, but my thought processes aren't appropriately engaged.
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System was already converted to 134 before i got it. Switch was never changed, but I know it cuts out at 20psi. When I take off the high and low side fitting protectors I can swear I hear a small release of pressure. I'm wondering of the valves are slowly leaking because it was properly charged last summer.Have you put a R134a specific cycling switch?
It's getting about time, it was 84° at 8:00 here.Supposed to 90f around lunch and gonna try it then.
Or, your engine fan isn't pulling enough air through the condenser. I upgraded mine to the 11 blade fan which helped quite a bit. Maybe add a pusher fan? Are you running a parallel flow condenser? That'll help too.Sitting in 90+ weather for about 20 min in school line the coolant temp climbed from normally 190 to about 210 and pretty much stopped blowing cold all together until I got back to driving. Assuming this is still normal undercharged situation?
I saw a thread about the 11 blade fan. I bought a cheaper condensor from rock auto last summer. Not sure style it is, just remember it being a UAC about around 80$Or, your engine fan isn't pulling enough air through the condenser. I upgraded mine to the 11 blade fan which helped quite a bit. Maybe add a pusher fan? Are you running a parallel flow condenser? That'll help too.
Its an electric fan that mounts behind the grille and pushes air into the condenser. My 99 Tahoe came with one from the factory.I saw a thread about the 11 blade fan. I bought a cheaper condensor from rock auto last summer. Not sure style it is, just remember it being a UAC about around 80$
What's a pusher fan?
Looked back in email and it is a UAC parallel condensor...Or, your engine fan isn't pulling enough air through the condenser. I upgraded mine to the 11 blade fan which helped quite a bit. Maybe add a pusher fan? Are you running a parallel flow condenser? That'll help too.