a mate of mine has a M plate wrx but running wise ok until it reaches 6000 rpm and then sort of misses (struggles as if it is cutting out) and then carries on as normal at 6500 onwards...?


Had it serviced - new plugs but still no joy..Used Optimax/SUL still nothing...

Any clues?

 

Only guessing but does it have an induction kit ?

 

Mine does this sometimes but I have no idea why?

 

No its standard aor flow system - sometimes the check engine light comes on but after about 1 min goes off again..

 

What fuel is he running it on? unleaded or super unleaded?


Tony

 

A mix of SUL and Optimax depending on the service station he is in at the time.

 

I had a problem like this when I had a Golf 16V, turned out to be the ignition coil, which got replaced after the other one got water in it. The garage replaced it with a cheap one, the local tuning place spotted it straight away.

If this kind of thing can happen on a scoob' then one of them HT pulse measuring things should be able to find it. It only cost me the price of a pint.

Z

 

The CEL error code will be stored in the ecu's memory...it's quite important

Black connectors under the dash by steering column, turn on ignition & CEL will flash long-short sequences.

Richard

 

He had it rolling roaded and tuned - checked out and replaced leads but still the same...

Richard - Please explain more. Dont understand the technical terms...!

 

mine did the same, i put it down to the oil level being to high, because when i changed the oil and filled it back up to just under the full mark it never did it again...

Dan

 

RAF1,

CEL = check engine light. When it flashes, it's because the ecu has registered a faulty sensor (or faulty input/response from one). Even when the light goes out, the error is still stored in the ecu.

You can use the connectors under the dash to read it out, but if you're not sure get the car to a Subaru dealer and ask them to use the Select Monitor to check for stored errors (or buy DeltaDash if it's >my99).

Personally, I wouldn't be WOT'ing a car that was hesitating at those revs.....

Richard