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View Full Version : Mercedes 722.6 transmission problem



sagareave
16th August, 2010, 06:56 PM
Ok DK, MY MOMS 2000 E320 NON 4-MATIC PROD DATE 11/99 W/ SIEMENS EGS1 PART#024545832, IS NOT SHIFTING.

SO FIRST I CHANGED THE FILTER AND FLUID.NO LUCK THERE, THEN THE CONDUCTOR PLATE AND ELECTRONIC PLUG(OIL WAS IN THE PLUG). STILL NO LUCK, WHEN SCANNED THROUGH OBD2 PORT I GOT P0748 INPUT TURBINE SPEED SENSOR. COULD NOT COMMUNICATE THROUGH 38 PIN. SO THEN I UNPLUGGED THE CONNECTOR 4 THE ELECTRONIC GEAR SELECTOR AND GOT COMM THROUGH 38 PIN CONNECTOR. I REPLACED GEAR SELECTOR AND NOW HAVE COMMUNICATION. THAT TOOK CARE OF ONE PROB, THE TRANS STILL DOESN'T SHIFT. VEHICLE WAS SCANNED AGAIN AFTER TEST DRIVE AND I GOT TWO CODES 4 PRESSURE REGULATING VALVE SOLENOID CIRCUIT, I WENT AND BOUGHT THE 2 PRESS REG SOLENOIDS AND REPLACED THEM. STILL NO LUCK, (SAME PRES REG CODES RETURNED)THEN I DID A CONTINUITY TEST FROM EGS TO ROUND PLUG ON TRANS, EVERYTHING WAS OK TESTED ALSO 4 POWER GOT 12V,CHECKED GROUND WAS GOOD. tHEN I PULLED OFF THE GROUND STRAP OF THE TRANS AND CLEANED ALL OF THE CONTACT POINTS. sTILL NO LUCK.TODAY I TOOK APART THE VALVE BODY 2 SEE IF ANY SPRINGS WERE BROKEN FOUND NOTHING ALL THE VALVES MOVE FREELY.cHECKED THE PLASTIC AND STEEL CHECK VALVES, FOUND NOTHING WRONG. I HAVE A BUDDY AT THE DEALER AND HE SAID THE ONLY THING LEFT TO CHANGE IS THE EGS.THIS IS A US MODEL AND ALL PARTS WERE GENUINE EVEN THE FLUID.THE THING THAT ALSO HAS ME STUMPED IS IN THE INSTRUMENT CLUSTER YOU CANNOT SELECT D1,D2,OR D3, WHICH HAS ME CONVINCED ITS AN ELECTRONIC PROB.

MY QUESTION NOW IS CAN THE EGS1 BE FLASHED ON THIS UNIT? AND IF SO HOW DO i DO IT?

YOUR INPUT IS GREATLY APPRECIATED.