The Mitsubishi had a problem I could identify with – it just didn’t want to get up and running first thing in the morning. Once warmed up though it was fine, ran like a sewing machine. I have great admiration for the engineering of all Japanese cars – they seem to iron out their faults before they get onto the market place. Even allowing for the reduced proportion of Japanese vehicles we just don’t get much trouble with them. This one though had been back to the dealer on 3 occasions without success. The Mitsubishi’s problem was that it would idle at only 600 rpm from cold – so low that the engine would often stop completely. A cold running problem could be caused by a device that only operates when the engine is cold , or it may be something that is there all of the time but only evident with a cold engine. To find the fault in the first instance requires a cold engine, while the second instance requires a tune and a hot engine. It is important to check the engine out thoroughly first with a tune, since otherwise a lot of tail chasing time can result. Tuning however in this instance did not uncover the cause of the fault so it we had to wait until the next day to check the cold running controls out. The fault was found to be due to poor wiring to the cold running idle speed control valve, but due to this device not having worked at all for quite a while it was semi seized up and needed removing and un-seizing. Most definitely like me in the morning.