Hi All,
I seem to be having a problem with the revs dropping below idle (idles 650 - drops to 100-200rpm!) when the car's warmed up - i.e no choke. Car has no problems at high revs, high speed and always starts first time.
What occurs if let's say I pull away from standstill, low throttle, get to 2000rpm and let my foot off the throttle the car will drop the revs sometimes to the idle point but sometimes lower - causing the engine to nearly stall and the steering to go heavy due to the fact the belt's slowing down... battery light comes on etc, sometimes it stalls but most of the time it recovers and goes back to the 650-670rpm idle.
This only happens when in D, in R, L or 2 it doesn't occur I suppose due to the fact they don't in a way drop to neutral. I just realised I haven't tried this when the car is at a standstill in N, that I will have to try tomorrow.
The revs issue also does not occur at high speed but it's causing me a few issues as sometimes I'm coming off a roundabout low throttle, let off and the car nearly stalls whilst at 20-30mph!
I have tried a reset of the ECU, taking the boost controller out, also unplugging the emanage blue I have. None appear to make any difference to the problem.
Apart from the idle control valve not keeping the revs at idle point what else could this be?
BTW this is on a UK-Spec with a T70 single conversion.