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REPLACED FUEL PUMP NOW CHECK ENGINE LIGHT ON.

Tiny
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  • MEMBER
  • 2002 MERCURY MARQUIS
  • 90,000 MILES
REPLACED FUEL PUMP NOW CHECK ENGINE LIGHT ON CODE P0453 REPLACE FUEL TANK PRESSURE SENSOR RAN TEST SENSOR SHOWS 5 VOLTS WHICH MEANS IT IS BAD BUT WE PUT TWO ON IT. THEY READ THE SAME WHAT COULD CAUSE THIS
Thursday, February 7th, 2013 AT 4:10 PM

1 Reply

Tiny
RANDICO
  • MECHANIC
  • 174 POSTS
Poor connection at the harness, leading to the ECM, You may also still have a EVAP leak at the gas cap, the filler neck, If you just put a fuel pump on, you have a evap somewhere, check also the purge line which should normally be closed
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Thursday, February 7th, 2013 AT 5:40 PM

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