JohnMc

Hi, I'm driving a MY94 impreza turbo uk and it's started to hesatate slighty when you're driving along, even when not boosting. It seems as if something is holding the car back also.
I've changed the plugs and checked the coil paks and all seem fine.
any Ideas as it's really satrting to worry me :s
Cheers
John

Dark Blue Mark

MAF and lambda are always good suspects, as are bunged up air filters etc...

Do a search.

MB

JohnMc

Thanks will have a look at Maf and Lambda, it got a full service during the week with a ECU reset as i thought it was filters, any other Ideas
Cheers
John

Dark Blue Mark

ECU reset is a clue, its likely to be a failed sensor which the ECU had "learned" its way around. Does it idle badly? Any increase in fuel consumption?

If its hestation below boost, I would think the Lambda would be doing it, most probably.

Still MAF / Lambda are favorites.

MB

JohnMc

Cheers, How do I check them, is there any clue as to know if they're failed or not?
Thanks for the advice
John