Where i can found the coolant temperature sensor in audi 2004 3.o quattro

SOURCE: locate engine temperature coolant sensor on jetta TDI 2004

This is it.

SOURCE: temperature sensor audi a4

Possibly located at the back of the engine behind cylinder head, usually located in a small plastic hose block.

TL

SOURCE: coolant in coolant reservoir did not fill low level in radiator

you must drain air out of system
so when engine is warmed up, just unscrew slightly the thermo time switch which is the highest sensor and unit in cooling system besides the reservoir, until alittle air releases then when antifreeze starts coming out then retighten to specs. BE VERY CAREFUL !!!! LOOSEN VERY SLOWLY AND NOT COMPLETELY REMOVE FOR THIS CAN CAUSE BURNS. MIGHT WANT TO USE A RAG AROUND SENSOR. If this doesnt solve it then make sure you have the correct rad. cap. Also that the filling hose is not clogged as well as the little port on radiator.

juggernautxt

• 145 Answers
• Posted on May 02, 2009

SOURCE: Misreading outside temperature sensor on 2001 Audi A4

Ford has the same problem with their sensor, internally short out or come lose check to make sure it is plugged tightly, if it do a quick visual of the wires and make sure no nicks,cuts in the wire, if nothing can be seen to fix replace the sensor.

SOURCE: replacement of coolant temperature sensor

located under intake in water crossover pipe,you can access the sensor by removing intake chamber box,then pcv hose connected to the block,the connector is orangeish 2pin,use a 19mmdeep socket on a 3/8 ratchet to get it loose,make sure engine is cool,also make sure there is a new brass washer with your new sensor,sometimes the old washer comes off when removing the sensor,sometimes it sticks to the pipe,some coolant will escape so make sure to top it off