New compressor, fresh charge. AC relay checks out, clutch comes on. 35ps on the low side.

The AC doesnt get cold enough, and the compressor clutch cycles on and off, bogging the engine down. Condensor fan does kick on when AC on. Oh, hose gets cool under hood but not cold (low side)

Works better when cold, go figure.

Why is the compressor cycling so much, and why isnt it getting cold?

 

my instinctive response is that you probably put in too much refrigerant. when it is at the optimal amt, it should have a minimal effect on the engine except for an increased idle.

I would double check that you put in the correct amt of refrigerant. Once the system has been evacuated, you need to put the correct amt in weight, not in pressure. There is a sticker at the end of the hood that tells you how much refrigerant to put in. I think its 22 ozs or something like that.

 

AC works great when its cool out, still think its overcharged?
Probably, high pressures and temp etc..

 

yup

 

What was the pressure on the high side?

 

I just checked the fsm and also the sticker on my civic. It says max is 22.9 ozs and min is 21.2 ozs. That's only a 1.7 oz difference.

So if you or the shop put in two 12oz cans of r-134a, that's already over the max and it will create bogging which is why I am telling you to get it checked asap or else you will have a broken compressor soon. then it will not be pretty at all.

as RonJ has posted, what is the pressure on the high side?