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ST170 NOT RUNNING PROPERLY

stoke.st170
stoke.st170
in Ford Focus Club

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HI FOLKS, I OWN A 52 PLATE ST170. IM HAVING PROBLEMS WITH THE RUNNING OF IT ESPECIALLY WHEN ITS WARM. WHEN YOU ACCLELERATE HARD AND IT REACHES ANYTHING FROM 4000RPM UPWARDS IT STARTS STUTTERING AND JUDDERING IT ALSO WONT HIT THE REV LIMITER WHEN STATIONARY.

I HAVE SO FAR REPLACED:

SPARK PLUGS

CRANK SENSOR

FUEL FILTER

CAT

LAMBDER SENSOR (BEFORE CAT)

THERE ARE NO FAULT CODES STORED, I HAVE ALSO TRIED THE COIL PACK, PLUG LEADS AND CHECKED THE CABLE ISNT BROKEN THAT GOES FROM THE CONTROL MODULE ON THE BULKHEAD TO THE INLET MANIFOLD AND THAT IS OK AND NOT BROKEN.

CAN ANYONE SHED ANY LIGHT ON THIS AND GIVE ME ANY ADVISE, IT IS REALLY STARTING TO ANNOY ME!!! CHEERS

  • Quote


    had this problem once turned out to be the crank sensor was the wireing ok when you fitted the new one?

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