5.0 LTR Knock Sensor Test?????
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5.0 LTR Knock Sensor Test?????
I have an 88 F150 with a 5.0 Ltr engine, I have had an intermittant problem with pinging. I have read the fault codes and one of them states that the Knock Sensor was not tested.
I have changed the sensor before and it fixed the problem, however after running low on radiator coolant and boiling the engine about 2 months ago I have the pinging problem back again.
I am hesitant to spend another $160 Australian on another sensor without first testing the current one.
Does anyone know how to test the Knock Sensor?
I have changed the sensor before and it fixed the problem, however after running low on radiator coolant and boiling the engine about 2 months ago I have the pinging problem back again.
I am hesitant to spend another $160 Australian on another sensor without first testing the current one.
Does anyone know how to test the Knock Sensor?
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From: St. Paul, MN
5.0 LTR Knock Sensor Test?????
Off the top of my head- I think I recall the book saying to hit the block in the area of the knock sensor with a hammer and check the timing with a timing light to see if the timing was retarted for a moment when the block was hit.
Dustin Siebert
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Dustin Siebert
mrlaserboy(No Email Addresses In Posts!)
Registry: http://www.superford.org/cgi-bin/sf.cgi?uid=default&vr2=1&ID=201
Home Page: http://www.superford.org/users/ylobronc/index.html
'88 Bronco XLT 302EFI/AOD/BW1356/44IFS with 8 lugs(open)/10.25 FF(Lockright locker)/4.56/6" Superlift/2" BL/35's-street/38.5's-trails
2 BIG BRONCOS 4X4 CLUB - GREAT LAKES CHAPTER http://www.2bigbroncos.org
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5.0 LTR Knock Sensor Test?????
Clear the code & see if this test resets Code 25 . My manual says to use a 4 oz hammer , but Im sure any normal size hammer will do . With the engine fully warmed ,Run the Engine Running Self Test , after you have gotten the Dynamic Response Code ( This is when you breifly floor the gas pedal , Its not nessecary to goose the throttle as you normally would do ) tap on the manifold as close to the Knock Sensor as possible & see if Code 25 resets . Let us know what you find .
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5.0 LTR Knock Sensor Test?????
Thank you,
I carried out the test as you specified above, the code reset and did not re-appear after the hammer knocks. I still have problems to address but now know that it is not the knock sensor.
I carried out the test as you specified above, the code reset and did not re-appear after the hammer knocks. I still have problems to address but now know that it is not the knock sensor.
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