You can find an exploded view of the 1996 Mazda Millenia 2.5 liter engine at most Mazda dealerships. You can also find the exploded view in most Mazda service manuals.
i have the same problem with my Mazda millenia 2001
On a 1998 Mazda Millenia, the air flow sensor, also known as the mass air flow (MAF) sensor, is typically located between the air filter and the throttle body in the intake manifold assembly. You can find it mounted on the air intake duct. To access it, you may need to remove the ducting or air filter housing. Always consult the vehicle’s service manual for detailed instructions and diagrams specific to your model.
Mazda millenia's have the same kind of key as a Lexus...the dealership is the only place that i know of... You have to find a locksmith that has a "sidewinder" cutting machine. They can cut the key much cheaper than the dealer!
no sensor only a thermostat
it can be replaced, but you wont be able to find it
on the rocker cover
You can find a supercharger rebuild kit for a Mazda Millenia at several online retailers, such as eBay, Amazon, and specialized auto parts websites like RockAuto. Additionally, automotive forums and enthusiast groups dedicated to Mazda vehicles may have leads on where to purchase these kits or offer advice on sourcing them. It's also worth checking with local auto parts stores or contacting Mazda dealerships for availability.
One can find listing for a Mazda 3 Speed if one goes to the site of cargurus. One can also find lots of Mazda 3 Speed listings on the Edmunds site. There one can find lots of listings, also from other cars.
If you know the velocity you can find the speed, you don't need a sensor.
You can obtain a free wiring diagram from most Mazda dealerships. You can also obtain a free wiring diagram from most auto-parts stores.
go to jtr ( jags that run ) you will find a complete speed sensor download, , don