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1995 Mercury Grand Marquis LS 4.6L MIL Lamp on
Posted to Ford Driveability on 8/7/2004 53 Replies

check engine light on with code po401. (egr flow insufficient detected).checked wiring for bad connection, disconnected and cleaned the sensor and computer connections. disconnected and cleared code two to three times. the code came back in about 10 miles. con...

53 Replies Received (View Replies)

  Related Documents & Media  1995 Mercury Grand Marquis LS

 
Message Closed w/Summary

car Vehicle Data

1995 Mercury Grand Marquis LS

VIN 2MELM75W0S
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAbout Three Days
Misc.N/A

Trouble Codes

P0401EGR System Insufficient Flow Detected
Message Closed w/Summary

car Vehicle Data

1995 Mercury Grand Marquis LS

VIN 2MELM75W0S
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / SEFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAbout Three Days
Misc.N/A

Trouble Codes

P0401EGR System Insufficient Flow Detected