Question about 1999 Nissan Altima
Posted by Anonymous on
That was a waste of time. The knock sensor's only function is to sense spark knock or internal noise and send a signal to the PCM which retards the ignition timing. It does not effect if the engine gets spark or not.
First you need to determine if your no start condition is fuel related or spark related. If it's spark related, you are going to want to scan the system to avoid swapping parts in the future as it will get quite costly. There are 4 components that will cause a no start condition. One being the cam sensor, the other a crank sensor, (some cars still have coils check for that) and the last an ignition module or ignitor as some cars have. (No spark issues).
If you have a fuel related problem, then you need to trouble shoot the fuel pump to make sure it's working, the filter isn't plugged, or that it isn't pumping too low of pressure to operate the injectors.
Posted on May 17, 2016
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Posted on Jan 02, 2017
remove the intake manifold ,remove radiator ,remove radiator intake and outake housing, remove fan ,remove all belts: power steering, alternator and if you have a/c, remove harmonic balancer ,remove timing belt covers, remove timing belt remove intake housinng once you have remove all the above, your freaken engine will look naked, you can see the location of the knock sensor is locate in the engine valley
Posted on Feb 19, 2010
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