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Egeismar

Chattanooga, TN

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Question Asked: 

I HAVE BEEN TRYING SINCE JULY TO FIND OUT WHY MY SERVICE ENGINE LIGHT CONTINUES TO KEEP COMING ON.THE CODE IS PO401,WHICH IS INSUFFICIENT AIR FLOW. I HAVE TAKEN MY CAR TO MITSUBISHI AND PRECISION AUTO; BETWEEN THE TWO I HAVE REPLACED THE EGR SOLENOID AND VALVE, THE MAPS SENSOR, THE MASS AIR FLOW SENSOR, THE O2 SENSORS,REPLACED HOSES AND CLEANED THE TUBING FOR CARBON BUILDUP. NOW PRECISION THINKS IT MIGHT BE THE COMPUTER SYSTEM IN THE CAR. IF SO HOW WILL YOU KNOW WITHOUT HAVING TO REPLACE THE COMPUTER? IS THERE A TEST?. ALL I KNOW THE SERVICE ENGINE LIGHT CONTINUES TO COME BACK ON. PLEASE HELP!!!! ANY SUGGESTIONS!!!!


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Question Asked: 

I HAVE ASKED FOR HELP WITH THIS PROBLEM BEFORE...MY CHECK ENGINE LIGHT CONTINUES TO COME ON WITH A CODE OF PO401, WHICH IS INSUFFICIENT AIR FLOW. I HAVE HAD THE EGR SOLENOID, VALVE AND VACUUM HOSE REPLACED AND THE TUBING AND ORIFICE HAS BEEN CLEANED OF CARBON. RESEARCHING THE PROBLEM I READ WHERE THE DPFE SENSOR COULD BE THE PROBLEM, BUT MY MECHANIC SAID THERE WAS NO DPFE SENSOR IN A MITSUBISHI. IS THAT TRUE? COULD IT BE A COMPUTER ISSUE AND HOW DO YOU KNOW IF IT IS? PLEASE HELP I AM DESPERATE FOR ANSWERS.I HAVE USED THE MITSUBISHI DEALERSHIP AND PRECISION AUTO.


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Question Asked: 

CAR CODES PO401- I HAVE REPLACED THE EGR SOLENOID AND VALVE, A VACUUM HOSE AND THE DPFE SENSOR. THE TUBING AND HOSES HAVE BEE CLEANED OF ANY CARBON BUILD UP AND THE INTAKE HAS BEEN CHECKED YET THE SERVICE ENGINE LIGHT CONTINUES TO COME BACK ON WITH THE SAME CODE PO401. WHAT ELSE CAN I DO ??? MY MITSUBISHI ECLIPSE CANNOT PASS THE STATES REQUIRED EMISSIONS TEST. PLEASE HELP DESPERATE FOR ANSWERS!!!


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