Thread: Loss of power in D2 when aircon switched on?

Originally Posted by ladas

It seems odd that the effect is so noticable. You may want to have the AC running pressures check, typical systems running in your temperature zone would be at about 220 - 250 psi, maybe a little lower.

A high engine draw would indicate to me that maybe the pressure is running much higher than that !

How clean is the condenser ?, are the condenser fans running ? are they running the right way ? (yep I know this sounds silly, but I have seen it more than once).

A quick check, run the car, switch on the AC - observe the conditions, then get a garden hose, and spray cold water on the condenser coil and see if the engine drain seems less, if it does this will indicate high pressures in the system.

High pressures are caused (generally) by

1. Poor condensing, blocked or dirty condenser coil, poor condenser fans
2. Refrigerant overcharge
3. A blocked or semi blocked filter / drier, or a blockage somewhere else in the system.

There are a few other areas that can cause this, like faulty TX valve, but the above are the main ones.

Thanks Ladas......armed with this advice, I will be speaking to my best mate Psimpson7 the next time he is round, so he can show me where to look at all the things you mentioned.

Really appreciate the feedback and will report back once I....I mean Pete.....has had a look and tested for me.........Hahn you drink isn't it Pete

Cheers again all, Mick

Hey Mick
There is bugger all differance in Kathryn's D2 with air on or off. As ladas has said check the condensor which is the big radiator looking thing in front of the radiator. I know how you like mud. Then if its clean take it to an automotive AC specialist. failing that sell it and buy the D1 I am building

Justin