2.0 TS Idle Drops Dangerously Low With High Electrical Load
I recently replaced my idle speed actuator (and reset it through diagnostics) to cure my idle hunting issue, but now I have another idle issue!
When I've driving around normally, with no lights on, no radio, no AC, when I depress the clutch to come to a stop the idle drops to around 500rpm then comes back to around 800rpm. However, when I turn the AC on the idle drops to nearly zero, the car shudders, the AC compressor cuts out, then bounces back and stabilises very quickly. It's as though the engine hasn't realised I'm still moving and catches it at the last moment.
Any idea what this can be? Without the AC on I believe having the sidelights and headlights on together with the radio are affecting the idle in a similar fashion, but it doesn't drop to near zero.