smartway wrote:DOES ANY BODY KNOW WHERE I CAN FIND A DIAGRAM FOR A 1999 Q45 ENGINE. I NEED TO INSTALL A KNOCK SENSOR BUT I DONT KNOW WHERE IT IS AT
Before you get yelled at by the other forum members, you need to download the FSM (factory service manual) or buy a paperback version. It will tell you everything you need to know and you will also discover there are TWO knock sensors (KS) on the Q45. Usually they die in pairs. Plus, depending on how many miles are on your car, you may need to replace the KS harnesses as well.
Most members on here are very helpful, but will expect you to at least do some of your own research before posting a question. If you are brand new to these types of forums, you can also click on the search function and you should be able to find 90% of what you are looking for.
Good luck.