1994 Nissan Quest Repair Question
Topics covered: Sensor, Black smoke, Crankshaft.
Mileage: 111,000 miles.
Mileage: 111,000 miles.
Asked on August 6, 2011
Mass air flow sensor
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
Asked by dogsareyou79Answer
Replied on August 6, 2011
Most likely a faulty Crankshaft position sensor inside DIST.
Replied on August 6, 2011
had that check keep getting a code 12 mass air flow short
Replied on August 6, 2011
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.
Replied on August 6, 2011
thats what i was thinking but i hoped it was something simple