Problems with ECU following remap [Archive] - Mitsubishi Lancer Register Forum

Problems with ECU following remap

14-03-2008, 19:08

Don't know of this is a common problem or not - my mate drives an Evo IV and last year he had an Evo VI ecu installed and remapped by a firm in Plymouth. All has been fine until recently - the car is juddering a lot whilst being driven, normally around 2 - 3000 revs. It's been into the garage and they can't find anything wrong with it apart from the fact that they can no longer scan the ecu. Is this normal following a remap?

They think it may be something to do with the Lambda sensor so he is trying to find a new one without much luck there either.

Any ideas on what could be causing the problem and where to get hold of a lambda sensor for a IV would be greatly appreciated - at a dead end here!

Thanks, Stef

14-03-2008, 23:48
get the crank endfloat checked, tolerance 0.5mm-0.25mm.what is he trying to scan the ecu with. if you join pins 1 and 4 on the ecu then switch ign to on the eng light will flash the ecu error codes long flashes are tens short flashes are units ,eg 2 long and three short is 23,steady flashes no codes.