It does not have a maf.
The crankshaft position sensor on a 1998 3.0 dodge caravan is located on the top of the bellhousing towards the firewall.
Map sensor fault
Replace the cam sensor
Where is the water pump???
Its located in the exhaust pipe on rear of engine.
odds are the the crankshaft or the camshaft position sensor
You will find the outside air temperature sensor under the battery tray
on a 3.0 it's located under the dist. cap/
21 is for the oxygen sensor reading staying at center.