WEBSTER

I have a 94 wrx which has a scoobyecu, dawes device , k+n filter,bailey dump valve(atmos), magnex back box and straight through centre and dawes afr meter,
The problem i have is that it has started to run lumpy and hesitate when driving and the blue light stays lit on the afr meter the symptoms come and go and the car did this a couple of times before it was chipped etc, i have also tried a different(but same serial No) ecu and the problem is still there , could it be a faulty lambda sensor , how do you retrieve the codes and is there a list of what each one means ?
Thanks in advance
Matt..

[Edited by WEBSTER - 5/23/2003 11:24:45 PM]

MAFFA

Here's a few things to try:

1) Clean the boost solenoid
2) Clean the MAF sensor
3) Check the state of your plugs & the gaps (0.7mm)
4) Last resort it could be the coil packs & if so get some of those wonderful Bosch ones like i've got.

Hope this helps

MAFFA

WEBSTER

I've fitted 4 new coil packs , it's got a new boost control solenoid . it's got new correctly gapped plugs so i'll try cleaning the maf sensor (but what with, brake cleaner) i did that last time but it didn't seem to cure it
any other idea's
matt..

MAFFA

looks like you've tried almost everything already

Yeah use brake cleaner & just spray it through. I'm all out of other suggestions...sorry.

MAFFA

THOMO

if you have the 240 ecu change for the 260 95/96 it stop my hesitation .dumpvalve my cause a problem very common. if its a k=n
filter with oil the metre does not like it.i agree with the above comments.im shore bailey have just produced the piston type dumpvalve because of this problem check there website.make sure turbo pipes are tight and not touching engine.check coolant levels.