2003 Ford Focus Q&A
2003 Ford Focus Question: engine runs rough
Some cars have an electric air pump for the emissions system. This pump only runs when the engine is warming up, and the pump can be quite loud. You may also have an exhaust leak that get's quieter as the engine warms up. - munkyrench
ok this is very simple, change the coil .remember the Ford Focus on 2001 doesnt have an ignition box, just a coil box that is located on the left side of the engine ( right if you standing in front of the car) close to the battery. the coil box goes bad after a lot of years of use, can be burned under or with black stains signal of malfuntion). pull it out ( only 4 screws) unplug the wire and replace for a new one (cost around 90 to 132 dollars) but for easy change... take the old coil and spark plugs wires out of the engine but never take off the ones in the old coil, that way you can follow the installation order in the new coil. what i always do after the coil is been replace and the connected, i change the spark plugs ( split fire or similar), new wires and clear the engine light .make sure the cables are well conected in the firing older (1324) in the engine ( Zetec)..... you will ride in a smooth ford focus no matter the year. i hope this info helps others with the same problem. *****by Freddie Rios. - Visitor
The rough idle started a few months ago and has progressivly gotten worse. It does not matter cold/hot, wet/dry weather. As soon as the engine warms up, it stops. Ocassionaly when it is put into ge...
I drive my car seldom [twice a week]. All city driving, maybe 25 miles a week. I use synthetic oil.
My answer that i need is not found,,my daughter has a 2001 ford focus that when started runs very rough,i drove it today(12/12/09)i found nothing wrong with the running part,but it seems like it mi...
Car suffers from high idle and rough idle with check engine light coming on. Can a bad tps cause this problem. No vacuum leaks can be found.