ENGINE SHUTTERS, OR MISSFIRES WHEN A

1998 Lincoln Navigator

Tiny

jayinak

March, 2, 2009 AT 9:23 PM

Engine Performance problem
1998 Lincoln Navigator V8 Four Wheel Drive Automatic

My truck hesitates when pushing on the gas. And the transmission has a hard time picking gears because of it. I pulled the codes and I have 3DTCs. P0175. P0171.P0174. It shows to lean or to rich in the system but I dont know what the problem is. I also have the freeze frame data on the P0175.
Fuel Sys 1 closed loop, fuel sys 2 NA, Calc Load 48.24, ECT 97,
STFT B1 3.13, LTFT B1 -5.47, STFT B2 2.34, LTFT B2-10.94, engine rpm@1048, vehicle speed@19mph. Well thats about all ive got. Hope ya can suggest a problable cause thanx.

FOUND 2124 RELATED QUESTIONS

Mis Fire -

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1 Answer

Tiny

BMRFIXIT

March, 19, 2009 AT 5:59 AM

All indicate you have a vacuum leak
check intake for leaks
check MAF sensor

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