vector720435

when i take my sti up to 4500 revs she starts stuttering like a rev limiter is on it any ideas does in all gears

myblackwrx

iTrader: (1)

Can you rev above 4500 and does the CEL come on?

vector720435

not in gear and no light comes on

samcowrx

I am not an expert but if it happened to me i would clean out the boost solenoid, check all its pipework and check the coil packs for a start.

samcowrx

Is it misfiring?

vector720435

no runs sweet till 4500 then starts stuttering boosts fine too

PeeVee

iTrader: (1)

Does your check engine lamp come on when you switch on the ign without starting the car?

vector720435

yeah it does

PeeVee

iTrader: (1)

Ok, was just wondering incase you were in limp home mode & the check engine lamp wasn't working.

How old is the car?

Does it only happen on boost/hard acceleration, or can you drive through the 4500 pm mark if you use a light throttle opening?

sponners

iTrader: (4)

speedo working?

vector720435

96 and even when just slowly accelerating it will do it

Jolly Green Monster

iTrader: (4)

what sponners asked

adzer

iTrader: (13)

does it rev past 4500rmp out of gear??

PeeVee

iTrader: (1)

Hmmm, Thats both interesting & unusual.

So you can't get the car to drive through 4500 at all, but you CAN get it to rev cleanly through that point if you take it out of gear?

Have you carried out any work on the car prior to the fault?

Was it driving perfectly ok one day & faulty the next or has it slowly been getting worse?

burbling1

iTrader: (1)

Mine did this once. I reset the ecu and its been fine since. May not be the case on yours but its worth a go.

vector720435

speedo has stopped working actually

PeeVee

iTrader: (1)

Well there you go, that's your answer.

The engine ECU needs a speed signal from the Speedo. If that fails then it puts the car into limp home mode (restricted revs & boost).

When you get your speedo working again, the car will drive normally.

sponners

iTrader: (4)

^^^