MASS AIR FLOW SENSOR

1994 Nissan Quest

Tiny

dogsareyou79

August, 6, 2011 AT 8:38 PM

I have black smoke comming from tailpipe I have changed the mass air flow sensor, did a wire check, changed disribater cap and button, new spark plugs, wires. But when the sensor is pluged up it is running rich. When it is unpluged car runs fine. Any ideas on what I might have missed

FOUND 1618 RELATED QUESTIONS

5 Answers

Tiny

Docfixit

August, 6, 2011 AT 8:43 PM

Most likely a faulty Crankshaft position sensor inside DIST.

Tiny

dogsareyou79

August, 6, 2011 AT 8:52 PM

Had that check keep getting a code 12 mass air flow short

Tiny

Wrenchtech

August, 6, 2011 AT 8:59 PM

You have a problem in the Mass Air Flow circuit but not necessarily the sensor itself. It could be any of the related wiring or the computer itself. It needs to be troubleshooted by a technician.

Tiny

dogsareyou79

August, 6, 2011 AT 9:06 PM

Thats what I was thinking but I hoped it was something simple

Tiny

Docfixit

August, 10, 2011 AT 8:46 PM

What happened

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