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RX300 knock sensor replacement DIY

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Old 12-14-13, 08:17 PM   #106
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Originally Posted by lexusknock View Post
Hey I recently replaced mine but now oppose to just one sensor being bad both are now saying they are bad any suggestions
Did you buy OEM knock sensors from a reputable place?

Recheck the connector and make sure you hear them snap close.

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Old 07-13-14, 08:57 PM   #107
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Check engine light is back on. It has been coming on intermittently last year or so, but now it's on solid. Had the codes read yesterday - P0330. What the heck?! I changed both of these and the harness 3.5 years/40k miles ago. When I changed them the first time, both tested Ok, which always raised my curiosity of whether they were actually the problem.

Four situations IMO:

1. The engine is really knocking. Sensors are doing their job and something else is wrong like timing or?... I never hear anything in fact I'm always impressed how smooth she runs with 150k

2. Wiring from sensor harness to main ECM isn't right. Bad ground, bad signal etc.. Guess I could jump all of it If I knew the pin sequence.

3. Bad ECM. Anyone have a loaner?

4. Bad knock sensors. Highly doubt it since they are relatively new and the ones I removed tested Ok.

Gotta get the fixed once and for all. Emission won't pass and as we know, this code shuts down the transmission overdrive

Thanks for any help. Tim
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Old 07-14-14, 03:18 AM   #108
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Just a thought: http://www.clublexus.com/forums/rx-f...ck-repair.html

Last edited by carguy07; 07-14-14 at 03:21 AM..
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Old 01-16-15, 07:46 PM   #109
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Thanks a million Salimshah,took my time broke it down in about 1.5 hours, going to change rear valve cover gaskets and plugs why it is easier to access from this tear down.
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Old 03-01-15, 09:48 AM   #110
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Just want to add. Whenever remove the hidden aic hook bolt, get a longer bolt and put it back with a spacer. So that you can use a wrench to install it or remove it next time. I also added a longer ground and mount it with easier access place.. Thanks
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Old 03-01-15, 09:48 AM

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