HI, I've worked on my 911 on and off for 10 years and have never been able to solve the cold start behavior it exhibits. There aren't any dealers any where near me and I can't get the local foreign mechanic to take a look at it. So here I am, asking this question. Is it normal to have to wait 3 to 5 minutes for the engine to warm up to the point where the manual choke isn't necessary. In other words, if I try to take off driving right after I start it, and come to the first stop sign, as soon as I let out the clutch the engine will sputter and die if I don't rev the engine or pull on the manual hand accelerator (choke). After about 3 to 5 minutes, depending on the temperature outside, the engine will warm up and no longer exhibit this problem. There is a cold start valve that I could replace but I don't think that is the problem. This is kind of a shot in the dark so I thought I would post and see if anyone has any knowledge with this sort of thing. -Derick

My 1999 cougar 6cyl. has began to idle from 2000 to 900rpm's then it will die. If I keep the idle around 2000 for 3-5 minutes then it will idle out at 900, but is still rough. The car is not driven over 50 miles a week, and it has seem to have got worse since the weather has change of cold. What advice can you give me on what the problem may be?...Thank you