Just before the catalytic converter.
On the 98 u have two oxygen sensors an upstream and a downstream. The upstream oxygen sensor is located closer to the front of the truck by the transmission. The downstream oxygen sensor is located on down torwards the back of the truck along the side of the frame.
On a 2003 3.9L Dodge Dakota, the O2 sensors are located in two primary positions: the upstream (pre-catalytic converter) sensor is found on the exhaust manifold, while the downstream (post-catalytic converter) sensor is located on the exhaust pipe after the catalytic converter. The upstream sensor monitors the air-fuel mixture, while the downstream sensor checks the catalytic converter's efficiency. Accessing these sensors may require lifting the vehicle for better visibility and reach.
The 4.7L 2002 dodge durango has 4 O2 sensors. ref. Chilton's Dodge Durango/Dakota 2001-03 repair manual. page 6-19 (Oxygen sensor - general info and replacement) The upstream oxygen sensor is located before the catalytic converter. The downstream oxygen sensor is located is located after the catalytic converter.
The IAT sensor is located in the intake manifold
A 1999 Dakota does not have a mass airflow sensor.A 1999 Dakota does not have a mass airflow sensor.
It is in the distributor.
Inside the distributor
Before cat on the left(driver) side if it has more than one upstream sensor.Before cat on the left(driver) side if it has more than one upstream sensor.
Top of the rear axle.
A 2006 Dakota does not have a mass airflow sensor.A 2006 Dakota does not have a mass airflow sensor.
The 1997 Dodge Dakota air intake sensor can be found attached to the air cleaner housing. The air intake sensor will be on the inside of the air cleaner housing.
The crankshaft sensor is located on top of the transmission at the passenger side.