dcmacg811 Posted September 8, 2005 Share Posted September 8, 2005 98ES300 - Have the P0330 code (KS 2 Circuit) indicating the knock sensor is faulty. Since this is located under the intake manifold, and the repair estimates range from $600 to $800, wondering if this is something a relatively handing person can attempt to replace on their own? The sensors can be purchased from around $160 (pricey little things - aren't they). If it's too much hassle, requires special tools, then forget it. If I do have it replaced, are there any other maintenance items that should be serviced while they do the KS2 replacement? Quote Link to comment Share on other sites More sharing options...
SKperformance Posted September 8, 2005 Share Posted September 8, 2005 :chairshot: Quote Link to comment Share on other sites More sharing options...
Toysrme Posted September 8, 2005 Share Posted September 8, 2005 1):chairshot: That's SK's way of telling you should search first. Knock sensors are covered on every Toyota/Lexus v6 forum to death. 2) 1mz-fe's are notorious for having over sensitive knock sensors. You should run your tank of gas low (18.5 gallon tank), refill with high octane fuel & reset the ECU (Pull the EFI fuse a second & replace) 3) 90% of the time the wiring is damaged - the knock sensor is fine. A knock sensor is nothing more than a piezo in a metal housing. Nothing to break less a mechanic does it during repairs, or the sensor shorts out (that falls under bad wiring). 4) It's a two piece intake manifold, some wires, some hoses, some cables, a fuel rail. Not engineering a new insulation foam for the space shuttle that the EPA says is "environmentally friendly". You need a normal set of tools: Normal & deep well metric sockets. Specifically 10, 12, 14 mm with extensions Lexus provides cheap chrome coated wrenches 8/10, 14/16 mm in your tool pouch If you're smart; you'll get a brush & some type of strong cleaning agent, and clean the entire upper intake air chamber (the actual name for the upper intake), including everything connected to it. (Throttlebody, ISC & EGR valves) Have some RTV silicon on hand incase you break a paper gasket. Quote Link to comment Share on other sites More sharing options...
Toysrme Posted September 8, 2005 Share Posted September 8, 2005 I wouldn't pay more than $300-400usd, and most of that is labor, figuring out what exactly the problem is. A mechanic experianced on any Toyota v6 is going to be looking at the knock sensors in no more than a 1/2 hour. I just tore down to mine on my 3vz-fe in 15 min yesterday, including the two valve covers! So it's going to be an hour of labor from a Lexus/Toyota/Import mechanic. You can also call some junkyard/salvage yards / ebay for 1mz-fe knock sensors. $30-50usd for a used sensor is about right. Quote Link to comment Share on other sites More sharing options...
dcmacg811 Posted September 10, 2005 Author Share Posted September 10, 2005 I thought I did a good search of the site before I posted the new link. I have read all about the gas cap and the EFI fuse reset. I've had the cap tested, it's ok, the EFI fuse reset works, but I get the code again within a few hours time. So, I'm really thinking it truly is either the KS2 wiring is loose or broken or the sensor itself is kaput. That's why I posted the new link. I hate getting bashed on the head. I thought I researched it pretty well. Quote Link to comment Share on other sites More sharing options...
SKperformance Posted September 10, 2005 Share Posted September 10, 2005 these are just a few of the 4 pages of topics that show up when you search using the words "knock and sensor" as +knock +sensor the+ before a word makes sure the search has atleast the word in there. So if both of them have the + it reduces the threads that only have 1 of the 2 or more words. Here is what i got for search results. http://us.lexusownersclub.com/forums/index...ck+%2B%2Bsensor then these are just a few threads that would help http://us.lexusownersclub.com/forums/index...=knock+++sensor http://us.lexusownersclub.com/forums/index...=knock+++sensor http://us.lexusownersclub.com/forums/index...topic=18977&hl= http://us.lexusownersclub.com/forums/index...topic=15337&hl= Quote Link to comment Share on other sites More sharing options...
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