Car running extremely rough at low speed. Check Engine Light on. No specific code specified. Car seems to down shift without acceleration or deacceleration. All fluids checked and normal or filled. Acts like it has lost one of 4 cylinders.

SOURCE: low compression in #1and #2 cylinders 1993 eclipse gs 1.8l

burned valve is likely the culprit.... or bad rings.... hook air up to that cyclinder one at a time.... and listen where the air is escaping... be aware that the motor will rotate till the piston is at the bottom of it's rotation. if it's a burned valve you will have to remove the head and replace it but somewhat easier job then replacing the rings. darn almost forgot.... it can also be a blown head gasket.... same procedure but you might need a brush and some soap water to test for an air leak at the side of the head. when you are done spray some wd 40 on it to get the water off so the spark plugs do not arc.


Robert

SOURCE: seems transmission gear shift problem

Pull the distick and smell the oil. If it's discoloured (black or dark brown) you know the transmission friction plates are burnt and needs a rebuilt.
Cheers

SOURCE: Check Engine Service light on

Without knowing anymore about your driving habits or how long it's been since a fill up, the first thing that comes to mind would be the gas cap. It sounds like you (or whomever filled you up) may not have locked the gas cap properly. This will cause a difference in pressure and will essentially throw a code.

SOURCE: I was driving on the freeway when suddenly my car

timing belt broken and valves to pistons

SOURCE: Car overheating while stopped. When in motion, the

you might want to check to see if your fans are working? driving, the air will cool it but stopped, if your radiator fans aren't working it will overheat! hope this helps