R32 Rb20det A.c. Problem

[hash87]

All,

i'm having problems with the air con in my r32 rb20det.

Problem:

Whenever i turn the a.c. on at idle, the revs suddenly drop to ~200rpm and comes back to idle. If I blip the throttle ,the revs will go up and then come down close to stalling, then settle again. Makes it hard to drive in traffic.

Details:

rb20 with a microtech lt12s.

Cleaned aac, even tried a different one.

checked grounds and made a grounding kit, no difference.

This problem slowly appeared and I can't think why it has.

Any ideas?

[blind_elk]

The Microtech needs a bit of tuning to handle A/C stuff.