Air Flow Meter question????

[75zGuy]

I currently have a rebuilt air flow meter on my '75 280Z which doesn't seem to be working too well. The engine is running way too rich. I am able to get an original air flow meter from a '78 Z in excellent shape. Will this one hook up to the wiring harness ok? Any other info and/or suggestions are greatly appreciated. THANKS

[conedodger]

It may not be the air flow meter. How is the wire from your cylinder head temperature sensor doing? For that matter, how is the sensor? It is on the thermostat housing and if it came disconnected in a perfectly running engine it would make it run very rich. It is a resistance signal. Look into that too...

I do not remember if the '78 will work. I think the later ones had some kind of shut off for the fuel pump if they were inverted as in a roll over accident. Not sure if the plugs will mate. Sorry, I knew all of this once.

[sblake01]

The 78 AFM won't work on a 75-77. For 78 and on the fuel pump contact circuit was eliminated. As far as the sensor on the therm. housing that Rob mentioned, that's actually the water temperature sensor but his advice on it should be followed. The cylinder head temperature sensor doesn't exist on the 280Z.

[conedodger]

On my ex-280Z I replaced the water temperature sensor (sorry) had my AFM rebuilt by Brett Industries down in Orange CA., had my injectors cleaned and blueprinted for flow. It was a bit of an investment, but it ran like a new car after. So smooth and fun to drive.