1999 Mercury Grand Marquis "rough idle warm" Questions

rough idle Intermitantly when the car is started, it idles exteamly rough and eventually smoothes out after temperature is warm. Other times it starts normal and has a smooth idle. 1999 wit only ...

why does car idle rough after fast idleslows down car will idle rough after starting until it warms up. when was last tuneup and are there vacuum leaks somewhere..

...rough idling, the engine is quiet as if It is about to die on me. While in drive and when at a long stoplight, or railroad crossing, my engine would just shut off, its as if it never reaches idle. I ...

...be stuck open. okay , do this on the EGR is a hose pull it off does the idle from rough go away? if it does this is the problem.You did everything right you need to solve for vacuum leak use your ...

I have a 1987 Grand Marquis that idles rough when first started, but after it warms up idles fine. When I accelerate it feels like it is going to stall, however, when I let up on the accelerator it ...

...rough idle untilit warms up. Then runs fine accept for what appears to be a file or cracked spark plug which is minor compared to how rough it idles at start up. Really smell the gas and exhust until ...

cold start rough idle until it warms 2000 2.0 non turbo beetle cold start rough idle until it warms then runs fine Could be the fast idle sensor check to see that the vacume line is hooked up properly

89 corvette idles rough when warmed up idles rough when warmed up. It seems to idle smother when it is first started.  clean throttle body with carb cleaner

...rough after the engine has warmed up. It cranks with no problem. Runs ok down the road but will not idle when stopped. Has a slight unpredictable miss. check ALL vacuum lines for cracks/holes and ...

...great when cold. When the truck warms up it begins to run rough almost cuts off the engine when running down the road. Does it run rough at hot idle ? How many miles ? Any recent work done on engine