i have/had a problem with the CEL flashing and then staying on, i say had as the light is off at the moment!

connected a laptop and 3 error codes indicated misfires on 3 cylinders

spark plugs are 2k miles old and are ok so i bought 4 new packs

i changed them and the car would not start??

put the old packs back on and the car starts

the old and the new packs have the same part number FK0140-12v strange or what?

someone has told me that some types of packs are programmable could the ones i have be for another scoob version??

BTW MY02 wrx

thanks

steve

 

anyone?

i cant quite believe that i bought 4 new packs and they are all faulty??

steve

 

Maybe try adding the new coil packs one by one and testing after you add each one?

 

thought of that

its just that the engine made no attempt at starting/firing with all four so i swapped 2 packs on one side and it ran, but very rough

is there anyway of testing the packs off the car?

thanks

steve

 

cannot help with the new coil packs... not sure if you want to hear this but the misfire code is possibly related to the neutral position sensor.. try logging the nps on the laptop.. see if it flicks to neutral whilst driving in gear..

Simon

 

hi simon

the laptop gave 3 specific codes misfires on pistons 2, 3 and 4

cant remember the codes (numbers) exactly

steve

BTW the car somtimes runs rough at low (around town) speeds like its missfiring

 

did the same but only replaced 1 coilpack with a new one and got a misfire code straight away, tried all different things then put the old one back on???? not sure but i think its cos theyve been disturbed????

 

cars are such a pain!!

things were so simple before ecu's

dont think its the new coil packs. whats the chance of all 4 being faulty???

hence the confusion (its prob just me )

 

just a thought as i did it years ago on a vectra{yawn} did the coilpacks go in nice and snug and not down the side of the plugs?? sound stupid but i did this years ago on 3 out of 4 bolted them up and got misfire on 3 cyls..

 

yeh nice an snug, its quite difficult or even impossible to get the rubber down the side of the plug. when i removed them i heard the suction pop as the rubber came off the plug.

s