Hi guys,

I've got a '97 WRX wagon totally standard engine wise apart from Iridium plugs, the problem is it missfires a fair bit, doesn't matter if the engine is cold or hot, it's ok in wet weather it seems to be worse when the weather is cold, i lose power and sometimes throws you forward in your seat, i know cars generally run better on cold dense air but mine seems to hate it, also i've been told black smoke comes out when it missfires.

I've had the plugs gapped and new leads, i swapped the coil pack for a STI one out of the breakers and no change, the place where i bought it said it shows no errors on diagnostic but they seem to not really give a ****. they had the car for a week just to change the leads.

So after all that, i recon its the MAF, i cleaned the little wire with elec. cleaner to no effect, i read about people talking about MAF's and saying about the colour of the label can anyone tell me wot the different labels mean, mine is blue label. I'm new to the Scooby so any advice would be cool.

Cheers, Gary.

 

firstly welcome to SN

just a guess but could it be a boost leak or fuel cut? i had black smoke when it blew a pipe off.

wayne.

 

oh yeah, i've got a little manual boost gauge that looks about 10 years old and when it's missing the boost doesn't drop off, the gauge show about 0.6/0.7. Where can i check for leaks?

 

anyone else? Just wanna know whether it's worth buying a new MAF or is there something else to check before i shell out the pennys.

 

Welcome
Its pretty simple, if you cannot fix it, get a professional to do it for you, its either that or you end up with a BIG bill on your hands, there are no cheap or short cuts to running a scoob, it will cost you money, and small things have a tendancy to get bigger quickly.
A speciallist or dealer will find the problem alot quicker than you will if you are not a mechanical genius

Oh and i really hope you are running super unleaded, it can be that simple!

Tony

 

The thing is the place i bought it from have had it back 4 times and still ain't found the problem, i get the impression they aren't bothered, thats why i'm doing my own research, i've got no probs fixing it myself.

 

overboost...leak somewhere or .....does anyone know does blocked waste gate solonoid/ faulty actuator give this

 

Where u from djsparra?

 

Are you running this car on super unleaded or unleaded fuel?

Tony

 

I'll try unplugging the MAF while running tonight see what happens.

I run it on super unleaded and sometimes i get some Tescos 99ron.

I live in a village just outside Sittingbourne.