JulioG

Can someone please tell me the step by step process for changing the knock sensors. I want to tackle this project myself. Parts have been ordered. 2 knock sensors (for bank 1&2) 1 Harness connector and gaskets for the intakes. and what tools are necessary. This car is as loyal as loyal gets. Need to keep this loyal friend on the road. Please help.

acc

I think u will need a 10mm socket and a long extension.

JSM1284

Remove the upper and lower intake manifold to access the knock sensors

JulioG

Thanks guys but i was looking for a step by step process.

JulioG

Wow, no love on this form. All these capable members, some here with obvious skills on this topic and can't get the necessary info.

D-Boi

iTrader: (5)

whats a knock sensor lol? i have seriously never heard of it

Barryst

If your ES has the same engine as my brothers 2001 ES, The motor is identicial to my 1999 RX300. I have already changed my knock sensors. Go to the RX 300 forum, someone just got done posting pictures for changing knock sensors. Make sure you get another coolant bypass hose to change while your in there.

-Good luck!

Here is the link https://www.clublexus.com/forums/rx-...ement-diy.html

JTS06Z06

A car enthusiast forum member that has never heard of a knock senser lol Well at any rate you will find a much better description and instant answer by typing "knock sensor" in the google search bar.

James ;-)

JTS06Z06

And to the original poster why do you have to replace your knock sensors? Did they fail or something? I assume a check engine light came on?

James

JulioG

Finally some love, thanks Barryst for that info. I do believe that 99 thru 01 (the last year for that generation) is the same car, for the ES. I'll check the Rx 300 fourm right away. once again thanks. And to james, I scaned my ES with a pocket scan when the check engine and trac off light came on. the code came up as 0325 which suppose to be a knock sensor issue in one of the banks. as i reserched this issue. the classic symptoms were: 1 car did not want to go into overdrive even though overdrive was on. 2 after erasing the code with the scanner, the check engine light w/trac off comes back after doing steady highway driving above 65miles per hour. doesn't come back as quick in city or in town driving. i really want to roll up the sleeves and do the job myself. i would be gratefull to any tips that can be given to me. i would post pics of the job and be as detailed as possible. once again thanks for taking time to read this thread. stay tuned.

JulioG

Just saw the DIY on the link Barryst just posted on his reply to this thread. And I'm so glad I joined this forum. THANK YOU!!! Barryst. Salimsha did his thing in posting pics and step by step. Members out there that want to know how to change knock sensors on ES or RX 99 thru 01 , this is it. time to get busy. all other tips welcome. stay tuned!

Barryst

You might want to change those spark plugs, if you haven't done them recently.-
I also performed a coolant change as well with the toyota pink premix stuff. Make sure you have the correct knock sensors. I think there are 2 different styles. Your ES will probably be a little easier to do than the RX. We have the wiper assembly hanging over our engine. Use the link only as a guide, its probably not going to be 100 percent the same as yours.
The job itself isn't too bad, as you will discover.
Keep track of all your parts!

Again,
Good luck!

JulioG

Barryst many thanks for your help. should i go with OEM spark plugs? or maybe some bosh plugs. also I'm going to change the thermostat while i'm in there. once again stay tuned.

Barryst

OEM parts only! Denso spark plugsare great. They last me 100,000 miles, and look good when I change them out. Stay away from Bosch Sensors. They can give you trouble...

-Barryst

JulioG

OEM it is. Thanks!!!!!!