1990 Toyota 4Runner Q&A
1990 Toyota 4Runner Question: where is the knock sensor found at on the motor?
There are two they are located under the intake manifold hard to get at/replace. The harness it's self is what usually fails, wires get brittle an break around the manifold. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online Alldata is best. - patrick mannion