2005 Ford Taurus Q&A
2005 Ford Taurus Question: knock sensor
what is the specs for this sensor what range should it be in vehicle has poor fuel economy been tring to figure this out for some time now have done all basic stuff maintenance has no codes or lights have snap on scanner can monitor data shows misfire when off idle but dose not set code all data seems ok has heated pcv tube has a little oil in it just wondering what knock sensor should read and if heated pcv could be the cause of the miss and economy - mudtech09
What are the LONG TERM and SHORT TERM FUEL TRIM figures is the computer adding fuel or subtracting fuel. If the car has high mileage I wonder if the Oxygen sensors are gone lazy or the computer is seeing the right amount of air being drawn into the engine. The quickest test for the knock sensor is hold the RPM at 2500 RPM and get someone to knock gently on the engine near the knock sensor with a small hammer or punch with the scantool connected you should see the ignition timing retard each time it detects "knock" caused by tapping on the engine. http://www.fueleconomy.gov/feg/noframes/20972.shtml the link above is the federal fuel figures (not too good!) - patrick mannion
...and coolant and checked water pump but all seems to be well there. What are the chances of the knock sensor being the problem? Finding the knock sensor replacement part has been difficult locally and ha...
What are the exact locations of the knock sensors on the engine?
there is a pinging sound from the back side valves could this be the valves.
...effective set of steps to resolve this problem. I think if the problem was the MAF sensor or a vacuum leak, etc, it would find both 171 and 174, at least some of the time. My OBD-II scanner can not rea...