I'm experiencing a problem on my 2001 2.5 Impreza whereby I get hesitation at low revs. Its ok on cold, its when the car warms up that it happens. It doesn't appear to be specific to any gear, and it tends to happen around 1200-2500 revs.

I've had a read up on here but most people seem to have the problem on cold, and not on warm. Apparently coil packs don't tend to go on 2001's and unplugging the lambda sensor I have been told (by one source only) will make no odds.

Any suggestions?

 

Please??

 

when you're coolant temp rises, or a while after warm up ? If its immediately after you coolant is warm and your throttle is light, then check your front O2

 

Thanks.

Where is it located, and what do I do to check it??

 

You cant check it yourself unless you have some diagnostic tools. I dont know the UK but surely places like PowerStation (?) or some other folks here can guide you better than I can

 

You'd think so wouldn't you??!!

Thanks mate.