Ripp1984

Hello all. New member here. I have a 2005 Suburban LT with the digital dual climate zone and auto setting. Just had the compressor replaced Monday and it still is having some issues.

When running at highway speeds, the ac blows cold as ice (45-50 degrees). When you slow down or come to a stop, it goes up to about 80 degrees. I have an automotive thermometer in the main vent next to the radio to tell where it’s sitting. I know this week in Florida is super hot and that the system would struggle some but why the extreme fluctuation? Bottom line is, I’m missing something and need some help.

Also, last year I replaced the electric fans while chasing an overheating issue which ended up being the oil pump.

oilcanhenry

My guess is that you didn't change out the accumulator or the orifice tube. 50 degrees is way too high and 45 F is high normal IMO.. Tell me what you did to it and I can be more precise. As an example, my 24 year old K-1500 runs at 42 F, and that's saying something. Personally, I am guessing you did not pump all the air out of the system. I do not mean to be rough on you, as you are a novice, and I'm a pro at auto A/C systems.

73shark

Welcome to the forum.

Cusser

1. WHY did you have the compressor replaced? Leak? Seized? Breaking AC belt? Poor performance? We had a 2005 Yukon Denali set up the same, so somewhat familiar with their AC.

2. Are your electric fans behind the radiator BOTH working full time???? And are they both pulling air from front rearwards towards the engine?

3. Are you sure that the compressor was the correct one for dual air?

4. When you come to a stop and the AC performance is bad, open the hood and use a flashlight to determine whether the AC compressor drive plate (the center disc) is actually turning, and not just the outer AC clutch pulley.

5. I'm in Arizona, and you folks in Florida have no idea what heat really is....

Ripp1984

Sorry for the late response guys. So I had the compressor replaced due to poor performance. The A/C guy I took it to said that when he took the old compressor off it was stock and had metal in the orifice tube and that it was starting to come apart.

As I stated before, I replaced the radiator fans last year and literally the same day the A/C decided it wanted to quit working properly. Could it be something to do with the new fans? I have the original ones still sitting in my garage and have considered putting them back in to see if there is a difference.

And if at all possible, can we leave the condescension out of replies. Not being a jerk but I am a novice after all and trying to find answers so I can get my girl operating right again.

Thanks

Cusser

Do the new fans direct the air though the condenser and radiator from front of vehicle to the rear? I just wonder if the replacement fans spin in the "wrong"{ direction. Or could be coincidental...

Ripp1984

So, if you’ll forgive my lack of speedy updates on here. Lol. The ac issue ended up being the radiator fans. I put the stock ones back in and the system started working perfectly! Thanks for all the suggestions and advice.

Gonna start another thread for an additional issue that just popped up this past week.