Maf Sensor!!!

1997 UK PRIMERA 2.0 TD (AC) THe Engine light stays on, got it checked out by NISSAN dealer who put it down to MAF Sensor problem. .The MAF sensor has 4 wires not 3 wires as described in the technical pages on this web page. I have fouer other primers , all of which have three wires in their MAF sensors. Can anyone help and tell me why this sensor is different. Whre can I obtain another sensor / or how to ground or check the sensor which has 4 wires!! Please HELP!!!

You say your car is a turbo diesel?

If so, this is why the MAF sensor has 4 wires.

Diesels use a totally different ECU arrangement. The ECU and all it's sensors are specific to the diesel range, not petrol versions.

I'm afraid that this'll probably be a main dealer part. What you could do is try to find the make & part number off the sensor (it'll probably be a Bosch or Hitachi part). You could probably locate one from your local motor factors if you had this information.

Otherwise, do you have a haynes manual? If so, the wiring diagrams would tell you which is the ground wire - although I suspect that you've got a knackered sensor here, so I'm not sure if it's worth bothering with.

Sorry!

I have a '98 Primera 2.0 GX TD, and also had problems with the air flow meter causing a lack of power. I had to go to the main dealer after a lot of looking elsewhere. It cost me £365 but the car goes like a rocket now. Although there are other problems with the car which I might post on here to see if anyone can help with. Anyway goodluck!!!