"1998 Audi A4: Coolant Temperature Sensor Located"

1998 Audi A4 Coupe Side View

I just bought 1998 Audi A4 2.8 liters. And I cannot locate the coolant temperature sensor. Is it is plugged into the radiator? Possibly the bottom right if looking from the top? Can anyone tell me where it is and what I will need to do to replace it?

Answer: It’s behind the engine on the right hand side looking from the front. Easy job to change but you MUST fit a new rubber O-ring and don’t drop the circlip down the back, they are quite cheap I saw a new one on ebay for $4.