'96 Pathfinder XE, CEL and white'ish smoke from exhaust.

[tmnismo91]

O2 sensor or MAF? Something else maybe? Thanks.

-Sean

[DAEDALUS]

What does the smoke smell like? Fuel-rich or coolant-sweet?

[tmnismo91]

The smoke doesn't have any odor to it. Doesn't smell like fuel, oil, etc. I'm thinking it is running rich though. The engine stumbles when first fired.

-Sean

[DAEDALUS]

Are you sure it isn' t just steam form condensed water? Do you do lots of short drives, like less than 5-10 miles?

See if you can get Autozone to pull the code for you, or pull it yourself (not sure if you can on OBDII Nissans.)

[tmnismo91]

The vehicle used to do short trips like that, but not for a couple weeks. Really hasn't been driven much. I was installing a new rack and pinion. I guess I'll give Autozone a visit since the local Nissan dealer "lost" their interface cable. What losers. Thanks.

-Sean

[DAEDALUS]

LOL That's a new one. Kinda like losing their only ratchet wrench. No work today!

[s13sr20chris]

heh, ill have to try that.

[tmnismo91]

I went to Autozone yesterday. Pulled a P0156, so I picked up a new O2 sensor. I am confused though. Autozone's website shows two different left-rear O2's. Bosch 15723 and 15727. Autozone gave me the 27. I am hoping this is the correct one. I am waiting for the car to dry so I can climb under there.

[DAEDALUS]

Probably just a difference with the harness and/or connector. If it's the rear sensor though, it won't impact your performance at all. The front sensor is for fuel trim.