Hi ppl I have a impreza turbo 2000 on a w reg. I havenoticed every now and again the car feel like it's pulling bk as if it's miss firing when traveling about 30-40mph but as soon as ya put foot down the car starts juddering and struggles to pick up speed. I have replaced ht leads and spark plugs but made no difference any body got any ideas what it could be.

 

Maf sensor.

 

Can the maf cause that problem.
That prob sounds daft thing to say but I new to scooby world lol

 

Yes, it can.
Don't fall for the so-called trick of unplugging it when the car is running to see if it works. That is a myth.

The only way to test it is to substitute a known working one.

You must get the one for your car, or better, ask for advice on here. They are about £80.