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Camshaft Position Sensors going bad


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#41 OFFLINE   ferrariowner123

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Posted 23 September 2017 - 05:00 PM

Yeah, i tried that and while it worked for a little while longer than before i had cleaned it, the second i got up to speed on the freeway (70 MPH) it went into limp mode. no stored codes, just pending, an 02 Sensor and both Cam shaft sensor codes. 

 

What should i do next?

 

-Kyle



#42 OFFLINE   ferrariowner123

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Posted 24 September 2017 - 08:52 PM

So i was talking with a friend of mine and he suggested that maybe the VCT solenoids are getting weak? Can any confirm that is a possibility before i drop $200 on new VCT Solenoids...

 

Many thanks

 

-Kyle



#43 ONLINE   Pathypop

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Posted 27 September 2017 - 09:37 AM

That is frustrating as he11.  Wish you were a neighbor so we could work it through.  I'd be trying your parts on my truck to see if specific ones have a problem.  If you know anyone else with your truck to experiment with.

 

Make sure you've done everything you can to make sure the oil, filter, etc are clean and the correct 5w30.  I think you already cleaned the solenoids, and you cleared out the oil passages with air as I mentioned.  I also used a motor flush when I changed the oil.  Added it to the old oil and let it idle for 5 minutes.  Not sure if it does much, but it can only help.

 

For the solenoids, they are expensive from the dealer (~$240 each IIRC) so I wouldn't suggest you buy them unless you are sure.  I'd bought a $30 knock-off on ebay just to check it out, it did work, but I'm not using it now.  I'd suggest you go to a salvage yard and buy them for about $20 each.  They are very durable and doubtful they wouldn't work. The same ones are used on all the VQ35DE engines, so there are a lot available.  Some have paper gaskets and others have metal gaskets.  I was sure to get the metal gaskets only.  I also picked up cam sensors at the salvage yard for about $5 each.

 

Check the solenoids removed from the truck with 12v.  They should click solidly.


Edited by Pathypop, 27 September 2017 - 09:47 AM.


#44 OFFLINE   hcorps

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Posted 12 October 2017 - 11:38 AM

I took my pathfinder to a specialist, no shorts, all the timing parts were getting the correct amount of voltage ect. He cleared all the codes and took it for a drive, he went like 50 miles of hard driving and it went into limp mode, engine light came on, codes showed the camshaft position sensors ect..he cleared the code drove it hard for 50 miles and engine light came on and limp mode again, he pulled over, turned engine off, cleared codes and started it right up again and it ran good for 40+ miles...he doesn't know if its the ECU or it needs a VVT cam gear...



#45 OFFLINE   hcorps

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Posted 12 October 2017 - 11:52 AM

I have been running seafoam in it for about 100 miles, maybe any sludge on the gears or where ever is thinned up and moved?

 



#46 ONLINE   Pathypop

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Posted 12 October 2017 - 07:18 PM

Not sure about Seafoam, but having it in the oil will change the viscosity and possibly the way the VVT's operate, so you'll want to change it soon.  I used a quart of Motor Medic when I changed my oil the first time.  This involves adding it before changing the oil and running the engine at idle for 5 minutes, then changing it out and the filter.  My hope is it does what it says and releases sludge.

 

If you're able to drive 50 miles before going to limp mode, that sounds like progress.  I couldn't drive 5 mi without going into limp mode when I had this problem.



#47 OFFLINE   ferrariowner123

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Posted 18 October 2017 - 05:10 PM

I have been running seafoam in it for about 100 miles, maybe any sludge on the gears or where ever is thinned up and moved?

 

 

Did this end up solving your problem?

 

-Kyle



#48 OFFLINE   hcorps

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Posted 19 October 2017 - 02:40 AM

Doing same thing, keeps showing cam sensors bad, clear codes and it runs fine for 5-10 miles then check engine light then safe mode. 

 



#49 OFFLINE   imadeulook

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Posted 19 October 2017 - 03:31 AM

Same situation with me happend no far ago (

its a P1145 err code

type : powertrain - manufacturer controlled DTC 

description: camshaft variable valve timing sensor bank 2 - range\perfomance problem

cause : wiring, camshaft variable valve sensor, ECM 

 

I tryed to clear it from my ELM adapter but after engene off \ on it shows again. May be its a wire or may be its a senser itself. Im gonna to try clear it with a CARB. May be itwill help )

second step - to change the sensor.

 

Also ive there is noise from my engene like it hitting  hammer to a metal solid ( sound like a diesel engene works...  chik chik chik chik :)... pardon for my english - not my best skill ))))

mecanics said need to check the engene valves - may be some of spacers were mixed up. Have you guys faced with this ?

 

And the most valuable case - fuel consumption . For me its around 20 lit for a 100 KM. What do i need to check if i want to decrease it ?



#50 OFFLINE   ferrariowner123

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Posted Yesterday, 08:01 PM

This is the most cryptic &^%*ing thing i have ever read, but after about a dozen times of reading this stupid thing, i think the determination was the VCT Cam gear was bad. 

 

https://www.justansw...code-p0021.html

 

Im gonna try and few more things, oil flush, and things of that nature, if that's not it, im taking to a trusted mechanic friend and i think he's just gonna change the Cam gear for me. Valvetrain stuff scares the hell out of me. 

 

Ill keep you guys updated.

 

-Kyle



#51 OFFLINE   hcorps

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Posted Today, 11:15 AM

Looks like the problem is in the camshaft phase gear. I think they are dealer only @$499 each. While in there its best to replace everything. Since mine has the 3.5 its just cheaper to replace the engine with a low mileage (40k) used engine. I wonder since the vq35de engine is in the 350z, some altimas, and the maxima would it fit in my pathfinder?

 



#52 OFFLINE   hcorps

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Posted Today, 11:27 AM

I know that if it keeps running in safe mode (on and off) it will ruin my catalytic converters...Would running a synthetic blend help?

 

 


Edited by hcorps, Today, 11:28 AM.


#53 OFFLINE   ferrariowner123

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Posted Today, 03:38 PM

Looks like the problem is in the camshaft phase gear. I think they are dealer only @$499 each. While in there its best to replace everything. Since mine has the 3.5 its just cheaper to replace the engine with a low mileage (40k) used engine. I wonder since the vq35de engine is in the 350z, some altimas, and the maxima would it fit in my pathfinder?

 

 

Try messaging the guy who swapped in a 350Z motor into his car.

 

http://www.nissanpat...-shaft-sensors/

 

He claims to have done it. 

 

And thats not installed is it at $499? I seriously doubt it. 

 

-Kyle






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