Frontier vg33er v6 Knock Sensor replacement - Nissan Frontier Forum
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#1 (permalink) Old 01-23-2011, 11:15 PM
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Frontier vg33er v6 Knock Sensor replacement

2001 frontier s/c k/c 4x4

I need to replace my knock sensor but I don't want to tear the top of the motor apart, likewise I am doing the timing belt right now and when all the covers are off I can see the KS and could replace it if the thermostat housing is moved. The two top bolts I can get off but there are two bolts holding a metal heater line in the very back that I cant get to. other wise there seems to be room to replace the KS this way.

Has anyone heard of replacing the sensor like this before?

here is the motor front with no covers if I could remove the thermostat housing I can get to the KS

here is the KS behind the housing

Last edited by sr24087; 01-24-2011 at 04:29 AM.
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#2 (permalink) Old 01-24-2011, 12:08 AM
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You could also try the KS relocation. Mixed reviews for the S/C engines though. Good luck man.
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#3 (permalink) Old 01-24-2011, 04:33 AM
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pics are up, some one has to know if this way is possible
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#4 (permalink) Old 01-24-2011, 10:23 AM
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Assuming you could get the knock sensor bolt free with some type of long air ratchet and a magnetic socket, how do you reach in there and separate the connector? I suppose one could find the wire routing in the engine harness and cut them. Then solder on extension wire and pull the knock sensor forward, bringing the connector and extended wires along. Then you could separate the connector when you can get your hands on it. I'm not sure if the wiring is connected at the rear of the engine with some type of clamp though.
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#5 (permalink) Old 02-07-2011, 12:33 PM
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I am to replacing the knock sensor in my 2001 Frontier V6. Does anyone know what the torque specs for the upper and lower intake manifold is. It's pain a real pain trying to find torque settings for these.


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#6 (permalink) Old 02-10-2011, 12:13 AM
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oh something tells me replacing this wouldnt be cheap if you cant do it to be me it seems
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#7 (permalink) Old 02-15-2011, 05:43 PM
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is it better to use a stock nissan sensor or is it better to use aftermarket
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#8 (permalink) Old 05-13-2011, 11:49 AM
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This is interesting cause I have always wonder if this route was feasible. Nissan service removes the top of the engine.

Once you got the bolt out you can reach behind the engine and pull out the KS. Putting the KS back in though would be difficult to line up the KS and bolt with the hole.

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#9 (permalink) Old 05-13-2011, 04:17 PM
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I don't see why it wouldn't work. That housing will come off, but the heater tube running to the back would be a pain. BTW, while you're in there for the timing belt it would be a good idea to reseal that housing, where it bolts to the block. These have been known to leak and it's a massive amount of work to do from scratch. Get it while doing the belt.

Run it 'till it breaks and fix it faster!
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