master cyl and clutch disc components were not replaced. but wouldnt a dud master feel sloppy when i first got the car back also? rather than re-emerge after a few weeks?
Mike,
Pedro and his mate suggested the throttle bodies were at fault. i followed that lead with no success, but i knocked over a different problem in doing so. I had an idle which needed a good dose of Viagra
basically at the lights it would flop to 500rpm, rumble a bit then come up to normal. It wasnt 'rough' but it wasnt normal. On inspection i found what is in my opinion only minor carbon buildup. However, after cleaning (including removal from the engine and cleaning on a bench and actuating the flaps by hand) i realised how much carbon there actually was. There may not have been a lot but it was built up around critical areas, such as the edges of the butterfly plate and near where the butterfly plate rests on the walls of the throat. Because of this, i concluded it was carbon buildup around the idle/rest position of the butterfly causing an erratic idle due to carbon creating a sticky/tacky surface which catches the butterfly ever so slightly.
Both throttle bodies were not equally soiled. I cant remember which throttle body was the most soiled. I might also conclude at this point that the throttle rest relearn probably only considers bank 1's position and it tries to command the other throttle to be the same position at idle and so forth.
End result of cleaning the throttle bodies is a smooth idle but still lagging randomly. Give me a week and i'll report back with something else that im experimenting with. Ive become superstitious with this car.
I tried grounding the throttles to no avail also. that was just with a small wire bolted using one of the four allen bolts.
hang in there mate
i've been battling this for over half a year now