I was going to guess the crank position sensor. The only thing thats weird about this is it doesn't explain the blue smoke. Could be two separate problems.

 

Okay so check this out. There is another guy I have known for about a year that has his car, a 05 Mustang, up at my buddys shop getting some paint done. When they started his car the other day to pull into the shop, his started doing the same thing mine was doing before it quit running.

So! Evidently I am not alone on this rough running thing, though at least his is running last I heard.

Anyone know off hand how much that crank sensor is and how hard it is to replace?

 

I haven't had any blue smoke. Just a lot of smoke when it was running rough.

 

2 cars doing the same thing at the same shop????/Can you say Mustang envy?Maybesomeone is putting an additive to your gas.

 

...?

 

Mine does the same thing for the past two months. It might happen once a week. it just started around winter time here in New York. I have to hold the clutch in other wise the car bucks and doesn't go away for about 2min. i was thinking of asking Doug i have his tune intsatlled ?????
Saverio

 

How long do you let it warm up??I have dougs 93 race tune and it does not like to be cold.When the car warms up its a great tune.

 

Me and the other guy both have tunes by Doug in our cars. And it has been cold here lately. But I did see a TSB on rough running/idling in the warranty and service thread, so maybe thats where my problem is coming from.

 

Well it is running perfect

They got my car to a local mechanic to get it checked out yesterday, and today he solved the problem.

He cleaned the spark plugs.

Apparantly, if these cars sit for awhile, the plugs get dirty. I don't drive mine everyday, and sometimes it sits for days. During that time I will move it so I can wash it, then park it again. Evidently that is worse for the plugs than I thought. The last time it was at my buddys body shop, the plugs got fouled from starting and driving 5 feet and stopping.

So my lesson learned is whenever I start my car, let it idle for a few minutes if it has been sitting for awhile.

 

+1. My car was in the body shop for several weeks for a new hood, stripes and other stuff. The shop only started it to move from one part of the shop to another several times. At some point the car would crank but not start so afterwards I had it towed to my mechanic. Same problem as Mydnyghte - fouled plugs. $330 later. With forced induction I guess I'd better consider installing an air/water separator to reduce blow-by.