Question about 1994 Lexus Es 300
I would like to know the exact location of the Knock Sensor on a 1994 Lexus ES300.
Posted on Jan 07, 2009
I do not recommend to do the knock sensor on V6 engines yourself , if you don't have mechanical skills. You will end up towing car to mechanic shop , it's not that easy as the guy saying here.
He might be right about wiring , yes maybe knock sensor is not bad , but once you there it's worth to repl. both knock sensor and wire harness which is $50.00 from dealer.I know knock sensors are expensive ~ $170.00 a piece , but sometimes testing sensor manually when it's exposed can mislead you if problem intermittent.
Good luck to all of you.
Posted on Apr 16, 2010
READ THIS FROM A OWNERS FORUM BEFORE YOU DO THE SENSOR, THEY ARE OVER $100 FOR THE SENSOR, $3-400 TO REPLACE IT.
1 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 (ENGINE TYPES) 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.
Posted on Jan 07, 2009
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 01, 2017 | Lexus Cars & Trucks
Aug 27, 2016 | 1999 Lexus RX 300
Jan 07, 2016 | Cars & Trucks
Dec 05, 2015 | Toyota Cars & Trucks
Oct 14, 2012 | 1994 Lexus Es 300
Aug 31, 2012 | 1999 Lexus ES 300
Aug 18, 2010 | Lexus ES 300 Cars & Trucks
Aug 04, 2010 | Lexus ES 300 Cars & Trucks
Mar 28, 2010 | 1994 Lexus Es 300
Mar 01, 2009 | 1999 Lexus ES 300
Sep 28, 2014 | 1994 Lexus Es 300
1,891 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: