I just replaced my supercharger, because it was really noisy. The new one seems to be working great (much quieter). I previously had my knock sensor relocated, to the the side bolt of the s/c. I was still getting low boost and lack of power. My mechanic removed the sensor from the side of the s/c, ran a ground wire from the sensor directly to the negative side of battery, and wrapped the sensor (in bubble wrap??) Anyhow This worked great but looked like crap. I was wondering, would it hurt anything to still have it bolted to the s/c, but also have a separate ground wire running to the negative battery terminal? This is the only solution I can think of to get a proper ground.
I had the same problem. So I just ran the ground wire to the eng block and tied the knock sensor back to the harness with some zip ties and e tape. You can't even see it
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2004 SILVER ICE SE/SC
-3" A/C SL With HD Bilsteins -2" DIY BL
-GRASSROOTS CENTERLINK-2.4 PULLEY -INTAKE MOD WITH K/N DROP IN-2 KC DAYLIGHTERS 2 HELLA 500FF,-CONCEPT-CUSTOMS LIGHT BAR-COBRA CB W/FIRESTICK.-SUPER CUSTOM BUMPER CHOP
were you still throwing a code with out the ground? I have mine bolted to the SC bolt on the right side also, but I didn't run a separate ground wire...but Im also not throwing a code...
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2003 Nissan Xterra SE Supercharged, 1.5" Spacers, KS Relocation, Aux. Lights for roof, bumper, and rear, sway bar removal, AAL, PML
I added the ground wire today, it didn't seem to work though. I still have the same lack of boost/power. No codes. I'm thinking removing it from the engine altogether might be the only option, but I kinda want it to be functional still. I don't like the idea of the engine knocking and blowing up because there's no knock sensor. Any other locations that might work?
you replaced the supercharger and didn't throw in a knock sensor? are you sure you got a good one? I've heard the $20 ones off ebay practically come dysfunctional.
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2002 SE S/C Sedona XOC/LINXC Member Since '04 Goodyear Wrangler ATS 275/70/17, PML, Intake Resonators Removed, Drop In K&N, Flowmaster Cat-Back, Rancho RS5000s, LOBO Rack, Interior LED Map/Dome Lights To Do: Repaint Plastics(Again), Custom Sliders, Knock Sensor Relocation, SoundRacer V8 Mod Wishlish: 32" ATs, PML, 2" BL, Sliders, UCAs, FacebookPhoto Bucket
no, a bad KS prevents you from getting the actual boost you are supposed to. It limits you to about 2lbs instead of the 5 or 6lbs (can't remember off the top of my head).
It costs about $900 to have a stealership replace the KS due to it's location. Relocating it is cheap, but about a 50/50 chance of actually working properly (from the research I have done, it's been 50/50. Relocating allows you to get the boost you should be getting from the factory). I relocated mine to the SC and would get one good run before it would go back to fail safe mode, I sinced deployed so I haven't been able to find a better location.
Hi, I relocate the knock sensor in the side of the supercharger one day ago. And my X still having the lack of power/boost. The KS is nissan genuine. With a voltimeter I see the KS is sending 2 volts at idle. And with the engine off has a 280 Mohm of resistance. Are this numbers good? The change in power/boost are fast after the relocation?
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Knock sensor relocation
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