2002 Mercury Marquis Replaced Fuel Pump Now Check Engine Light On Code P0453

2002 MERCURY MARQUIS
90,000 MILES
Avatar
ANONYMOUS
  • MEMBER
  • 1 POST
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
Feb 7, 2013 at 8:10 AM
Avatar
RANDICO
  • ✓Experienced 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
Image (Click to enlarge)
Attached Media
Feb 7, 2013 at 9:40 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle

Advertisement