Your soaked ECU is the one that controls lights and windows, sometimes called the convenience module, - NOT the engine. Thats a completely different one, elsewhere on the car.
You said someone "read" the cpu and said it had a misfire? Thats not a proper "read" you should be getting specific codes that tell you specific issues. There will be a code that tells you WHY the management light is on.
Whats the misfire like? is it really down on power all the time? If it is really rough and lacking power it could be a coil pack.
Last edited by: Zero on Thu 20 Nov 14 at 21:47
|
Volkswagen Passat - 01 2.0 51 plate p.. 
Volkswagen Passat - 01 2.0 51 plate pet.. 