How to Replace Knock Sensors on a Toyota 3.3L 3MZ-FE
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- Опубліковано 15 бер 2024
- In this video, I’ll cover everything you need to know about replacing knock sensors on your Toyota or Lexus! The engine shown is the 3.3 liter, but don’t worry if you have the older 3.0 liter engine because the process is very similar.
1:24 removing the wipers and cowling
3:55 removing air box
8:12 removing upper intake
15:37 how to properly drain coolant
18:24 removing the lower intake
25:36 removing old knock sensors
32:20 re-sealing valley plate
36:28 installing new knock sensors
39:31 installing lower intake
41:14 how to properly install thermostat
42:57 installing upper intake
Torque Specs:
knock sensor nuts - 14 ft-lbs
valley plate bolts/nuts - 71 inch-lbs
lower intake manifold bolts/nuts - 11 ft-lbs
upper intake manifold bolts/nuts - 21 ft-lbs
thermostat housing nuts - 71 inch-lbs - Авто та транспорт
I’m here coz I found a sienna for sale going for cheap, with “only knock sensor need replacement”. Looks like you just changed my mind 😂. Thanks for all the mechanics posting such videos. Helps a lot of people like me.
Haha yeah… there’s a reason it’s selling for cheap. And I guarantee you it’s more than “only knock sensors.” It’s gonna need more work.
One of the best video I seen regarding this engine, appreciate making the video , learning a lot for my 2004 Highlander thank you
Ended up being a mini overhaul of the whole engine not just knock sensors. Great tips on those cracked, brittle and warped hoses and connectors. How much does it it make you mad that manufacturers (including Toyota) insist on using plastic parts and sealant substituting for gaskets? Great job as always, Jack. Good for another 200,000 miles.
Thank you. This is a extremely helpful video.... I have a 2006 Toyota Solara with 3MZ-FE engine with exact same issues. I changed the knock sensors on bank 1 and 2 with valley plate leaking fix. It was very long and tedious job but with the help of your video, I was able to pull it off. Thank you!
Absolutely first class video. Legend for taking the time to show us all. Thank you for this 🙌
Thanks for the comment! I’m glad you liked the video!
@@jackhfletcher having to do this whole job on mine soon...i will come back to this video for sure..cheers fella
Thank you, Sir. Extremely Helpful!
Excellent video. Well done.
Thank you!
I ended up overhaul the knock sensors (Rock Auto as Jack recommended), sensors connectors, intake gasket, fuel nozzle O-rings, thermostat. It gets expensive but they are maintenance items you have to do it. All the OEM parts came out about $500. Hopefully this helps... currently I have 232K miles on my car.
What knock sensor harness did you order ? Im about to do the same job
Very professionally done, how much difference when dealing with the same engine in a Lexus RX 330 ?
Quick question anyone...What is the I.D of that Bypass Hose above the Sensors in the gully??
Awesome job
Thank you!
Hi Jack the video is very helpful... Are you planning do 3MZ-FE timing belt change video in the future? There are couple videos out there in youtube are pretty good but there is no torque spec, tools and replacement parts # as this video. Thanks.
It’s funny you mention that because I’m about to post that video! I’m still working on editing the video but I hope to have it posted by next weekend.
@@jackhfletcher I will second that request
Thanks for posting this. Exactly what I needed to see. This is beyond my skills unfortunately, and I’m thinking that the cost on this job with all the recommended work you did as well, basically mechanically totals the vehicle. I’m guessing this is going to be $4-5k, and the car probably isn’t worth that. Tough decision time.
Most shops in my area (Houston, TX) are charging around $150 per labor hour. My shop is $135 per hour. We would normally charge around 6 hours to replace the knock sensors. If you tackle everything you saw me do in the video (valley plate, valve covers, spark plugs, etc) it could easily reach 10 hours. The trick is finding someone who will actually take his time and do a good job. For example, a lot of guys don’t properly clean the valley plate, etc.
What was the lubricant you use for the hose? 38:35
Sea Foam Deep Creep. You could also use soapy water.
Thanks@@jackhfletcher
Where’s your shop located brother?
Katy, TX
I've been so scared of doing this for a long time now. Mine is around 200k miles now and it's getting worse and worse by the day. It started around 160k.
It’s a lot of work, but you’ll be happy once it’s done! I hope you find everything you need here.
*Promo SM*
No way that car is a Toyota
Because…?