New Knock Sensor new problems : ( - Nissan Xterra Forum
 
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#1 Old 11-09-2012, 11:13 AM
Dusty187
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Question New Knock Sensor new problems : (

OK, so two weekends ago I went through the grueling task of replacing the knock sensor on my 2002 X. It took the better part of the day and all of my will to get the project completed. Started it up and my ODB2 gave me a throttle positioning sensor code, turned out I didn't have it completely plugged in. Thought I'd fixed the problem but then got a misfire on cylinder 1 and then one on 2. replaced the plugs. #1 is good but #2 is still showing up. I didn't strip the whole top end down like everyone else soes in thier pictures to save me time I just moved some things out of the way, which made it harder to put the lower intake and fuel rails back in. and I'm hoping in my rush I didn't get the #2 injector properly seated and that maybe its just one of the seals for the #2 injector and not a lower intake leak. I've been looking and listening for a possible leak in the intake and cant find one, but it idles rough occasionally and stutters around 1100 to 1200 rpm when you give her throttle. I could use some serious knowledge because the Fiancee drives the X on a daily basis and isn't real happy with me right now.
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#2 Old 11-09-2012, 04:03 PM
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Before anything I'd say you've gotta make sure everything you just put on is installed correctly. I know that's going to be a pain in the ass, but whenever things aren't well right after yo changed something... check whatever it is you changed. That plenum for the air intake does seem to be a real bugger to pull off on the first gens, but I'm afraid I don't see another way to be absolutely sure everything is in properly without pulling that off and checking all the connections.
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#3 Old 11-16-2012, 08:14 AM
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Thanks for your help I actually started retracing my steps last weekend, first i tryed the obvious possible problems first i tried switching plug wires around to see if i would get it on a different cyllinder and what not. then i cracked back into it and i found the problem... I left a peice of masking tape over an injector port and just overlooked it when i reinstalled the fuel rails. while i was in there i went a ahead and replaced all the injector o-rings and grommets. It runs great now haha!!
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#4 Old 11-16-2012, 09:28 AM
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Great to hear! Glad everything's running good for you now!
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#5 Old 11-16-2012, 01:48 PM
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Awesome. Just because of some tape....

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Build Thread-http://www.clubxterra.org/forums/showthread.php?t=38877
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injectors , intake system , knock sensor , missfire

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