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Old 04-20-2014, 08:29 PM #31
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Quote:
Originally Posted by TXRick View Post
I figured this is a better post to reply to.

So, I've got it apart and replaced both sensors.

I am having trouble with the harness. It runs out the front of the engine but it's stuck and I can't pull it through. I see where it starts and ends but it's ran very tight out the front and in between the cam wheels.


Mine comes out here and is stuck. Even if I get it out how am I going to run it back through?



I'm thinking when the engine was rebuilt they didn't run the wire right. Can anyone tell me how it's supposed to be run?

That's NOT the knock sensor. Your knock sensor is below the intake manifold in the motors valley. Here's mine when I did it so you have a better idea what/where you SHOULD be looking.

Nor_cal51501's build thread
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Old 04-20-2014, 08:34 PM #32
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Quote:
Originally Posted by nor_cal51501 View Post
That's NOT the knock sensor. Your knock sensor is below the intake manifold in the motors valley. Here's mine when I did it so you have a better idea what/where you SHOULD be looking.

Nor_cal51501's build thread
Yeah, I know that's not the knock sensor. That's where the knock sensor harness wire is coming out of the valley.

Here are the knock sensors.
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Old 04-20-2014, 08:56 PM #33
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Quote:
Originally Posted by nor_cal51501 View Post
That's NOT the knock sensor. Your knock sensor is below the intake manifold in the motors valley. Here's mine when I did it so you have a better idea what/where you SHOULD be looking.

Nor_cal51501's build thread
I'll be more clear.
The harness wire goes from the knock sensors then trough this thin metal plate here



Then out the other side here



And ends up here on the passenger side here



Like I said before, it looks like it's routed wrong. I'd have to cut it to pull it out. How is the harness wire supposed to be run?
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Old 04-20-2014, 10:36 PM #34
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Quote:
Originally Posted by Greg_Canada View Post
It's the wire that is to the right of the top water pump outlet

And it connects like this:

Ok, after looking at this pic for the millionth time, it looks like I was right. The idiots who rebuilt this engine ran the wire wrong. It looks like I'm supposed to run it out the top.

Up all night, sleep all day!
Except I have to work tomorrow...
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Old 04-20-2014, 10:41 PM #35
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Toyota 3.4L 5VZ-FE Knock Sensor location
Quote:
Originally Posted by TXRick View Post
I'll be more clear.

The harness wire goes from the knock sensors then trough this thin metal plate here







Then out the other side here







And ends up here on the passenger side here







Like I said before, it looks like it's routed wrong. I'd have to cut it to pull it out. How is the harness wire supposed to be run?


That makes things so much easier. Glad you know the difference, I was seriously considering telling you to just take your car in and get it done. (Cause I thought you didn't know the difference between the camshaft position sensor and knock sensors) The wire harness actually just comes up and out on the right-ish side of the water return line(I believe it's the return) on the intake manifold in between the metal plate and the intake manifold. I'll snap a pic real quick and upload it in 2 seconds.
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Old 04-20-2014, 10:45 PM #36
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Toyota 3.4L 5VZ-FE Knock Sensor location

You can see the harness running along the metal plate for the timing cover backing and under the water return line.

Took this pic looking down between the timing cover and next to the drivers side fuel rail.
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Old 04-20-2014, 11:07 PM #37
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Awesome! Yeah, those pic will help a lot. I'll prolly go buy all new gaskets tomorrow and button it all back up. Thanks for the help
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Old 04-20-2014, 11:18 PM #38
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Cool
No problem bud, good luck with the rest. Hope it all goes smoothly. Also, found this picture that shows a MUCH better view of when I pulled mine apart. This shows EXACTLY where factory routing is. Hope this helps out @TXRick
Toyota 3.4L 5VZ-FE Knock Sensor location-image-jpg
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Last edited by nor_cal51501; 04-20-2014 at 11:27 PM.
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Old 04-22-2014, 08:47 PM #39
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Looks like you guys figured it out! there is a little chamfer in the intake manifold which makes space for the wire to squeeze through.

Good luck!
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Old 04-22-2014, 11:33 PM #40
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Yeah, I got it all apart and back together but I must not of seated an injector correctly because now there's a hissing sound and the smell of gas...damn 420 holiday
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Old 04-23-2014, 12:51 AM #41
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Quote:
Originally Posted by TXRick View Post
Yeah, I got it all apart and back together but I must not of seated an injector correctly because now there's a hissing sound and the smell of gas...damn 420 holiday
Mine did that too. I bet 99% that it's one of your o-rings. I had to replace mine after my knock sensor build because my passenger rear injector was leaking. Those seals are old and tend to rip when you pull them apart. Look at the link I sent before and it's got the part number for the o-rings.
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Old 07-13-2014, 02:53 AM #42
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hello everyone involved with this thread.

Looks like I might be doing a sensor soon enough. Had bank1 p0325 come up and assuming its the harness especially with the killer hot weather we have been having lately.

Anyway, any pointers from those that finished?
Good time to do timing belt and water pump as well?

Anyone have part numbers for both knock sensors and harness? Seems to be the best thing is when you have it apart to do it all at once?

Thanks!
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Old 07-13-2014, 02:03 PM #43
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Quote:
Originally Posted by awpsome View Post
hello everyone involved with this thread.

Looks like I might be doing a sensor soon enough. Had bank1 p0325 come up and assuming its the harness especially with the killer hot weather we have been having lately.

Anyway, any pointers from those that finished?
Good time to do timing belt and water pump as well?

Anyone have part numbers for both knock sensors and harness? Seems to be the best thing is when you have it apart to do it all at once?

Thanks!
It's not that difficult just time consuming. This fix deals with the top of the engine and the tb/wp is on the front so I can't really say it's a fix this while you're in there type of thing. I got my sensors from rock auto and my harness from Toyota of Dallas. I'll look up part numbers in a little bit, but if you look through my posts, I think I posted them somewhere already...
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Old 07-13-2014, 07:43 PM #44
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Quote:
Originally Posted by TXRick View Post
It's not that difficult just time consuming. This fix deals with the top of the engine and the tb/wp is on the front so I can't really say it's a fix this while you're in there type of thing. I got my sensors from rock auto and my harness from Toyota of Dallas. I'll look up part numbers in a little bit, but if you look through my posts, I think I posted them somewhere already...
Sounds good. Thanks! Yea so I think I found the harness and sensor part numbers on another thread.

Just confirming. I only need "one" harness? 2 sensors?
Are both sensors the same part number?

I also read somewhere I'll need to order 2 new intake gaskets and another gasket I forgot what it was haha.
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Old 07-13-2014, 08:37 PM #45
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Quote:
Originally Posted by awpsome View Post
Sounds good. Thanks! Yea so I think I found the harness and sensor part numbers on another thread.

Just confirming. I only need "one" harness? 2 sensors?
Are both sensors the same part number?

I also read somewhere I'll need to order 2 new intake gaskets and another gasket I forgot what it was haha.
Yeah, only one harness and two sensors of the same part number. I didn't replace any gaskets and have had no problems.
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