MINI2 - MINI Forum - View Single Post - Why do MCSs feel so wierd to drive when cold?

MINI-Morgan · Oct 2nd, 2007, 11:29 AM

I believe some of the answer is in that it takes a couple of minutes to warm up the O2 sensors so the ECU runs the engine very rich when cold until a set temp is reached and then back to good old dynamic short and long term fuel trims. Thats my understanding of it anyway.

Oct 2nd, 2007, 11:29 AM	#5
MINI-Morgan MINI Obsessed... My Classifieds Join Date: Nov 2003 Location: Southampton, Hants Local Time: 01:40 PM Posts: 4,768 Offline	I believe some of the answer is in that it takes a couple of minutes to warm up the O2 sensors so the ECU runs the engine very rich when cold until a set temp is reached and then back to good old dynamic short and long term fuel trims. Thats my understanding of it anyway. One Man, One Project......find out what happens next at MINIProject.co.uk For MINIs in the south it can only be South Coast New MINI Club