O.k. I got my Neil and Steve squared away.

Neil,

I was also under the impression that it was potentiometer you were replacing. Steve is correct in his descriptions. Ideally you should be able to plug in the new air flow meter and go. You might need to reset the resting height, depending on how it starts when its warm, but you will not know until after its installed and running. Look at the used one and examine the wear marks the sensor plate left in the funnel. That will give you an idea where the old one`s resting height was set. Once its installed and pressure is in the fuel distributor, you want to see about 1mm of free play before resistence is felt when you deflect the sensor plate by hand. If its close and runs/starts fine, both hot and cold, don`t touch it!

Please post the resistence values on your new meter. It would be helpful to all members as a reference point. I will test mine and post my readings this evening.

Tinker