*matt*

my wrx '93 import has a unsteady tickover and what feels like a miss fire at around 2500rpm when driving.

when i connected the black diognostic plug under the dash it came back with code 23 for a temp sensor.i changed the sensor and the problem is still there.

any other ideas?
thanks,matt

myblackwrx

iTrader: (1)

did you reset the ecu after changing the sensor?
I would be surprised if it's that particular sensor causing a misfire though.

*matt*

yep, reset ecu. sensor was buggered but i agree with you i dont think it was the sensor that would cause the trouble

if it was the air flow sensor or lambda sensor would that show up as a fault code?

myblackwrx

iTrader: (1)

Problem with the CEL is that it seems to normally only detect a completely knackered sensor rather than one going wrong.
MAF test is normally unplug it when running and it should stall or test the voltage.

tjmatt

iTrader: (1)

I was under the impression code 23 was MAF malfunction which would explain the misfire, although perhaps not on imports ?!

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myblackwrx

iTrader: (1)

Oh dear i think matt must have misread it and bought a new sensor for no reason.
tj the codes are the same for imports and UK and yes the MAFcan cause misfire problems.

scalesy

Try cleaning you maf with some carb cleaner give it a good blast if you do replace the maf make sure it is a green lable it could also be coil pack on its way out!