It's a 1993 WRX that is holding back .It's an intermitent fault one minute it is fine and flying the next, its hesitating then it could be fine again ,then it will be like driving a non turbo. so far we have fitted New Coils/Plugs/K&N Air Filter/fuel Filter/Lambda Sensor/Temp Sensor(under inlet manifold)We have also changed the ECU/Air Flow Meter/Actuater/Boost Control Valve and fitted a D-Cat front pipe and Centre Pipe. There is no pattern to it at all when really bad turbo gauge only reads 4 bar instead of 8 bar, any help wolud be appreciated as this car is DRIVING us mad.

Thanks...

 

Do you have any codes in the ECU, have you tried an ECU reset?

;];]

 

I'm sure we have already tried this but no Fault code, I'll give it a go tomorrow again

Thanks still need more help though.

 

Hope you mean 0.4bar and 0.8bar..

Boost control solenoid is sticking.. contaminated with oil..
clean it with brake cleaner.. when shut the natual boost is 0.4bar..

JGM

 

Although you say you have replaced it.. might be getting recontaminated..

Is there oild in the intercooler pipework?

JGM

 

New knock sensor cured mine

 

Check the wastgate linkage under the turbo heatshield.

Myself and a few others have had the circlip that retains the actuater arm to the wastegate come off so that the actuator is operating intermittently as it catches on the loose linkage.

Rich

 

See my reply on your other thread

 

Thanks for the help guys, Trying couple of bits so let ya know,,,,Any more could still help

 

We have changed the map sensor also by-passeed the boost control valve. Its boosting at 0.8 all time now but still holding back and now again will over boost.


HELP>!!!!!!!!!!! Please

 

My MY93 did this. I changed the plugs, which helped a bit, I changed the coils, which improved things slightly, I changed the boost controller, which improved things a bit more and finally fitted a Scoobyecu which appears to have cured it completely.

Not sure why the Scoobyecu would have made the difference but that worked on mine.

Where are you based? If you're in or around the north-west, I'm happy to swap ECU's and see if it helps.

EDIT: ah, you're in Kent. Bit far then

[Edited by NotoriousREV - 9/27/2003 12:45:55 PM]

 

could be the crank position sensor, i have seen the same sort of thing happening.

take it out and give it a clean

 

Is it a Genuine Subaru ECU or an aftermarket one like Scooby sport,How much,Where to buy etc.

 

Riverdale... mail me

 

Mail you ??

 

He supplies the scooby ecu can recomend it as the best mod for money you can buy do a search and read for your self.

Mark

 

We have done eveything now, Changed ECU, WE need any more answers please