the_big_1

iTrader: (1)

Hi All,

I am getting a hesitation, bit like a missfire and then a little surge etc.
Only just started over the last couple of days.
Anything thats common to cause it?

2.5 STI 2006

bioforger

iTrader: (1)

I had the same and it is a misfire. Changed the plugs as I had a remap due anyway and the exhaust up pipe was cracked. Could also be the MAF, I had that changed to.

the_big_1

iTrader: (1)

Hi,

I am looking at the plugs this weekend.
Up pipe I can check.
Any way of checking the MAF without just fitting a new one?

classic scooby

iTrader: (21)

Hi mate

The way to check your maf is start your car and let it tick over then un-plug your maf and it should stall this way you know your maf is ok.

hope that helps

regards

Nick

the_big_1

iTrader: (1)

Will try that tonight.
what if the car doesnt stall, faulty etc?

chocolate_o_brian

iTrader: (22)

Different car I know, but I had a similar issue on my old MY99 UK scoob a while back.

Ended up being a combination of MAF, lambda sensor and Idle Control Valve. Just wear and tear. All three were replaced and the problem buggered off. Probably was more the MAF and lambda sensor though.

That would be my first port of call anywho

the_big_1

iTrader: (1)

Have you seen the price of a MAF lol, for my 55 reg BMW it was £20, Subaru is £100 lol

uk300scoob

iTrader: (24)

couldnt be from wear and tear if its only an 06 sti

53

iTrader: (41)

Any engine light ?

What filter was it you fitted recently ? is it sitting flush ?

the_big_1

iTrader: (1)

The filter is a K&N and was in the car when I got a few months ago and not touched and no, no warnning lights.