Which model is your engine?
The intake air temperature sensor is located just after the top of the intercooler. It will have color coded wires coming from it.
The P0116 is a coolant temperature sensor trouble code. The most likely cause is a bad sensor, also check for corrosion on the connector and for broken or frayed wires. It is located in the coolant housing on the rear of the engine, be careful not to break the plastic clips that hold the sensor and note there is an o-ring that goes in place before the sensor.
The coolant reservoir on the MK3 jetta is located against the firewall. It is a small round reservoir.
The MAF ( Mass Air flow) sensor is located right on the intake pipe. Can't miss it.
The speed sensor in located in the front of the motor. You can find it near the transmission and the engine split line on the Jetta.
Should be located behind the front driver's side bumper cover.
The speed sensor on a 98 Jetta is located near the brake setup. It is on the passenger wheel area mounted to a bracket.
start by check your coolant level. Otherwise it could be temp sensor or fan not coming on to cool car.
Coolant Temp sensor on the 1.8T engine is located on the driver side of the block. Following the radiator hose coming from the radiator, your see a plastic housing that splits the flow of water on the side of the block, on top of that black plastic piping is a sensor with a black flat plastic clip. Once you see it, you'll know, its the only sensor of its kind with that clip. Just make sure the car is off and cool.
on the front i think
A knock sensor sends a voltage signal to regulate ignition timing. In a Jetta, it is typically located under the air intake manifold.
The front crash sensor is located inside the airbag control module.
where is crankshaft position sensor and camshaft position sensor on a 2004 Jetta 2.0 gl
The oxygen sensor on a 2004 Volkswagen Jetta is located in the engine area. It is usually encouraged to warm up the engine so as to ease the threads.
The Intake Air Tmperature Sensor is incorporated in the Mass Airflow Meter.
in the door lock/latch.
Is is located inside the distributor.
its located on the oil filter housing....
In side bell housing in the transmission.
right in front if the battery terminal on the transmission
remove the polin filter cover and you will find the AIT sensor next to the polin filter
Try checking the cooling fan sensor to ensure it engages the fan. The fans should be turning very fast
The mass airflow sensor, on Most VW Jetta Mark IV, is located on the air line that goes from the air filter to the intake.