That is usually a result of a plugged filter
The Chrysler Town and Country speedometer sending unit is located on the back of the transmission. The sending unit will be in the upper right-hand corner of the transmission.
Both sending and receiving NICs must agree on transmission speeds.
the oil sending unit its right next to the dipstick and the oil filter on the ford 300 its a screw in device with a wire protruding from it.
screw into end of transmission.
Sending an electrical signal along a nerve cell.
Packets
packets
Water pump not pumping or a pluged radiater
For the DOHC motor look behind the dipstick tube for a single wire sensor.
relay:sensing device
The RPM rev up when driving because of the way your car's transmission works. Essentially, the transmission is responsible for sending power from the engine to the wheels. The transmission's job is to change the RPMs that the engine is sending, so that the wheels can turn at the correct speed. When you accelerate, the transmission increases the RPMs that the engine is sending to the wheels to provide more power. The faster you accelerate, the more the RPMs will increase. This is why you hear the RPM rev up when you are accelerating.
If you have the 4.2, it is on the passenger side of the engine near where the dipstick enters the block, forward of the starter.