DIY KNOCK SENSOR REPAIR: I SAVED OVER $4000! (FJ CRUISER)
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- Опубліковано 25 бер 2021
- In this video, I show you what it takes to change a knock sensor on a 2007 FJ Cruiser.
In a shop, they bid it for 20 hours of work and over 4k in cost. I was able to do the work in about 4 hours.
I show you the way I did it without having to pull the head off.
I had mice get in and chew the wires up and made the FJ run like junk.
#fjcruiser #fjc #checkenginelight
Thanks for watching!
ON TO THE NEXT ADVENTURE! - Наука та технологія
Great job, my water pump inlet and long pipe were the hardest parts to get off and replacing the wire harness !!!
Nicely done
So happy for you that it all worked out!Don’t forgot to add more antifreeze!!!! ;)
Thank you!
Thank you from Ciudad Juarez Chihuahua Mexico ... right now I will do what you recommend!
Gracias desde Ciudad Juarez Chihuahua Mexico... ahora mismo hare eso que recomiendas! = )
I don't see the fuel rail anywhere in the video, is that procedure in a different video?
Do you remember all replacement parts? 2 knock sensors, intake gasket set, anti freeze? Anything else? Great video! Thanks! I just took my Taco to mechanic, 16 hour job, early quote between $3 and $4, 000!
Upper and lower intake gaskets. Knock sensors. Antifreeze. There is one o-ring on the crossover tube that I pinched that I had to replace. If you're careful you won't have to. It's just a simple o-ring though. I believe that was it
I see how hard it is to remove the center pipe, front was ok but rear was stuck had to use channel locks and pry bar to get it to move and a lot of wiggling back and forth for a half hour but finally got it off !!!!
Mine was jammed in so bad I had to give up and give it to a professional to finish.
Youre a saint.🦾
I just purchased a ‘14 Tacoma with the same issue. I believe the FJ and Tacoma share the same 4.0 V6? We have the 6sp manual. Even though the CEL is on, no drivability issues.
Is the pipe whose bracket is cut through the same pipe that is shown on page EM-96 (4th picture down) of the Engine Mechanical service manual? It indicates a non-reusable o-ring. If it is, due to the difficulty removing the pipe shouldn't it be replaced?
That pipe definitely has o-rings on each end and I would recommend replacing them
@@bobsnextadventure
Thanks for your reply Bob. It looks like there are 2 videos describing this repair, this one and one by Shawn Wayne, neither mention it and it seems how hard you have to work it to get out it would need to be replaced. Couldn't see in the manual there is one on each end tho, thanks for that info.
How did you get the large coolant pipe out of the rear housing?
Pull it out. Both the front and rear slip into the housings.
Good vid man !!! Im going to do that this weekend on my tacoma. Do you know the torq specs for the lower and upper intake ? Thanks advance
Thanks. I don't recall. I just did a quick Google. I do remember it being pretty easy to find.
@@bobsnextadventure copy ! Wish me good luck 🥲. Ahahaha
You got this!
I'm about to do this on my 2007 FJ, specs from the FJ service manual are:
Knock sensors 20 N/m - 15 ft/lb
Water outlet pipe - 10 N/m - 7.4 ft/lb
Top intake (Intake air surge tank)
28 N/m 21 ft/lbs
Spark plug 20 N/m 15 ft/lb
Bottom intake
Intake manifold to cylinder head sub assembly 26 N/m 19 ft/lb
Throttle body 11 N/m 9 ft/lb
Just curious why you didn’t replace both sensors. Also, can you provide a link for the sensors, harness, and gaskets?
I might not have shown on the video but I did replace both. Figured I better being I had it taken apart.
As for the parts I didn't order them online. I believe I got the gaskets from O'Riley and the sensors were OEM from Napa.
@@bobsnextadventure Napa doesn’t sell the actual OEM sensors. Only Toyota has those for like $200 each lol. A good alternative is NTK(NGK) which are Japanese made. The harness is only like $30 online so in my opinion not worth repairing. Good video
Hi, hope u answer this question please.
I have 2020 hilux v6 engine same engine that is in you FJ. some weeks ago i had a mice in my engine bay, and so long there is no visible damge on wires, but now it have developed a knocking issue that only occur in high gears and in only 1800-2000 rpm. Do you think its because the mice maybe have eaten the knock sensor wire?. if yes why i dont have engine light on?.. my car have only 17000 km on it
Hello, if I had to guess it would be a separate issues. From my experience even know my knock sensor wires were chewed up the engine never had a knocking noise. The main symptom I had was I lost a lot of fuel mileage. And had error codes. I am not sure what would cause your issue. Maybe bad fuel or low octane? Hope that helps.
@@bobsnextadventure i use 97 octane, but im living in a country with a very bad fuel quality, which leads to fuel pump change more than normal. But i have washed the engine 3 times after the mice. maybe some of the harness got water in them?. dont know how common it is. The car is vey well maintened.
and it only knocks while in D, when i switch it to manual the noise diseapears.
Hi. My Fj 2014 does this as well. Pinging at 1800-2000rpm. No check engine light. Runs ok. 71000km. Did you fix this issue?
Hi, could you tell me how you could see that the wire was chewed to start with? I cant figure how to look there from top or bottom
I bought a little snake camera that went on my phone and used an app to look in
@@bobsnextadventure thanks! One last question, did you have to replace any gaskets as well to do this job?
@@raynaeyaert Yes the upper and lower manifold gaskets. And an o-ring for the crossover for the coolant. Got to be careful not to pinch that o-ring putting it back in
Between this video and on other, I’m about to do the same. The parts list kinda was hard to find besides having to watch videos. I’m hoping mine goes as smooth.
You may or may not get back to me before I start tomorrow. What exactly did you unbolt on the front to allow the coolant tube to come out and anything needed to reinstall besides the bolts?
It has been a while since I've done this. But mainly just top and bottom intake manifold. And I think there was one bolt on that tube. But I cut the other bracket as you saw. I am not sure if that helps. The fuel rail I believe can come out with the bottom manifold if I remember correctly. Don't have to come out the way I did it but it works either way
@@bobsnextadventure that’s what I needed to know. I kinda dread doing it but I also don’t want to spend the price for dealer to do it after they couldn’t get the code to come back. I’ve got everything I need I believe
@@Willytwoscoops by the time when you're done with it. You will find it was easier than you expected. Don't forget to replace the o-ring in the crossover tube. Also make sure you don't pinch the o-ring putting it back in. I learned the hard way.
@@bobsnextadventure I got 2 of them just for that.
Im about to tackle this on my 08 btw do you know what’s the part number O-ring on the crossover tubing? Thanks I sub
Do you have the PN for that new pigtail harness?
Sorry I do not. I believe I just called Napa or O'Reilly's and they were able to look it up
Just get it at Toyota for $ 30.00 bucks !!!!
Rat's love BMW and Toyota's. They flavor the electrical wires with something really tasty. My roomie had his BMW 535 parked on the street and it got destroyed.
That must be it! Dang....
Just get a new harness only $ 30.00 at Toyota and knock sensors $ 65.00 at Rockauto !!!!