There isn't one you take the 2 screws out to remove the map sensor in which plugs directly into a hole in the intake manifold that's where it gets its vacuum from.
A diagram for the vacuum hoses on a 1997 Pontiac Sunfire is located in the service manual. It outlines where each hose goes and its function.
Yes, there is a diagram for the vacuum hose and sensor for this vehicle. It is found in the maintenance manual and in its repair manual.
Remove the vacuum hose from the sensor. Pull the sensor out of the air cleaner housing. Insert the new sensor into the air cleaner housing and attach the vacuum hose.
ck for vacuum at map sensor hose, if it is vacuum present replace the map sensor.
I think I'd check for a loose, cracked or missing vacuum hose somewhere under the hood. FriPilot
vacuum line diagram
It is mounted in the air hose between the air filter and engine.
vacuum hose
You attach it on the engine
On a 1998 Cavalier, the IAT sensor is located in the hose connecting the air cleaner to the throttle body. The IAT is a two-wire sensor.
You can get a vacuum hose routing diagram for a 1998 Nissan 200SX SE-R from the dealership. You can also order one from the auto parts store.
More information. What help is rquired