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1998 Ford F-150 Lariat 4.6L MIL Lamp on
Posted to Ford Driveability on 10/18/2017 8 Replies

Ran KOER test with vacuum gauge tee in, egr works, 6in of vacuum to the egr valve, engine runs rough during test, doesn't stall. Sets cdoe p1408 witch is KOER test failed for egr flow test failed, same as p0401. Went thru the pinpoint testing for this code and...

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  Related Documents & Media  1998 Ford F-150 Lariat

 
Message Closed w/FIX

car Vehicle Data

1998 Ford F-150 Lariat

VIN 1FTZX1761W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0401EGR System Insufficient Flow Detected
Message Closed w/FIX

car Vehicle Data

1998 Ford F-150 Lariat

VIN 1FTZX1761W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0401EGR System Insufficient Flow Detected