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88Nightmare
10-29-2008, 11:42 PM
2000 Ford Escort ZX2


getting code P0171, fuel trim running lean. what could be the problem? o2 sensor?

Irish
10-29-2008, 11:56 PM
2000 Ford Escort ZX2


getting code P0171, fuel trim running lean. what could be the problem? o2 sensor?

Old fuel filter?

Cjburn
10-30-2008, 12:05 AM
On my fiance's Focus this code was given for the vacuum leak it had. There was a tube with a 90 degree bend right off of the pcv. Common problems in the Focus's, don't know much else about the ZX2's, could be the same DOHC 2.0?

88Nightmare
10-30-2008, 12:07 AM
hmm. I have a vacuum gauge, I should put it on there

Cjburn
10-30-2008, 12:13 AM
Does it have a stumble at idle?

88Nightmare
10-30-2008, 12:22 AM
sometimes. sometimes it stalls at lights. I did some research and its just like you said, could be a leak in the pcv line

Holeshot
10-30-2008, 07:13 AM
Check the DPFE sensor. and EGR circuit

Waver
10-30-2008, 07:41 AM
sometimes. sometimes it stalls at lights. I did some research and its just like you said, could be a leak in the pcv line

from what I heard, the pvc line is one of the most common failures on the 2.0 ztech engines....easy to fix, just a little bit annoying

88Nightmare
10-30-2008, 10:48 AM
Check the DPFE sensor. and EGR circuit

DPFE sensor?

folkswagen
10-30-2008, 02:41 PM
ask rallyscort, im shur he knows what the problem is :rolf

Sleeper Sierra
10-30-2008, 04:30 PM
not the dpfe, that would be a p0401. most likely a vaccumn leak

Reverend Cooper
10-30-2008, 07:03 PM
it needs a maf sensor that will cause the lean code and the stumble.dieing at stop