i've got an 04 JDM STI - i changed the standard air filter for the uprated STI last night. On the 2.5 mile jorney to work i noticed that the car was starting to idling strangely, almost as if it was going to stall while at a stand still

Has anyone got an idea as to why this would happen. Altough the new filter is a Subaru OE part it seems a strange coincidence that this has happened on it's first journey. Could it be the car adjusting to the new filter or a more serious problem??

 

Happened on mine. Changed Lambda sensor, problem cured.

Chip

 

Chip - what age was the car - i would hope that a year old sensor would be ok? out of interest hope much was the new sensor?

 

I fitted an STi panel filter to my MY03 WRX STi no probs. Check you haven't disturbed the connection to the MAF on the airbox or any other connections where you have been working on the car.

HTH,

Damian.

 

Car was about 18 mths old IIRC. Was replaced under warranty

Chip

 

just incase this is useful for someone in the future i took the filter out earlier and then replaced it, making sure everything was as it should be. I have a sneaky feeling that i didn't seal/close the air-box properly before (it was getting dark!) and since everything is back to normal

 

this is def the most common prob with scoobs, my 98 type r does it too, runs great tho apart from dat,strange cars

 

I had similar problems when my dv was'nt sealing properly, turned out to be a broken spring (forge)