Nissan Murano 3.5 V6 Hard to Start. Fault Code P0021

Car is reporting a problem with the variable valve timing following the owner replacing the Camshaft Position Sensors. The Engine computer ECU thinks the Bank 2 Camshaft is out of position.
All proceeds from the shop goes to Poppy.
Find the items that are used on the Dave Sterl channel in the Amazon shop.
www.amazon.co.uk/shop/davesterl

[@davesterl]

All proceeds from the shop goes to Poppy. Find the items that are used on the Dave Sterl channel in the Amazon shop. www.amazon.co.uk/shop/davesterl

[@mechanicmatt871]

It's a pain when aftermarket parts are just not up to the job. Great evidence based diagnostic. Interesting video. No problem for you mate 👍

[@davesterl]

Cheers Matt, i thought i was going to be doing a timing chain on this one

[@kennedysgarage3281]

Excellent video Dave, you coped that inverted signal very early in the diagnosis. You a are very fluent with the pico too able to swop from the 6 to the 7. I’d probably get brain freeze right there. Thanks Dave 🙏

[@davesterl]

Cheers Peter, some bizzare comments on this video. Seems despite showing facts and evidence some still don't get it

[@bradjames3555]

I saw a Bernie Thompson video on upside down waveform on cam sensors and it turned out the camshaft was magnatized and needed to be de-magnetised. Well worth bearing in mind on this sort of issue. Magnetised camshafts reversing the polarity is not something we normally think about.

[@davesterl]

i seen him de-magnetising a crankshaft ring but the waveform was not upside down

[@blackbirdmark495]

Another fantastic & very informative video in how you diagnosed the fault with the intermittent starting. 👍

[@soulrider678]

Really interesting video, learned a lot from it and nice to see live data/graphs being explained. Have the autel scanner myself just not the pico tool as im a home/diy "mechanic" but can definitely see its usefulness 👍

[@colinreid7305]

Unfortunately, some aftermarket parts can be problematic, but people will try to save money. I will not cover the labour on an aftermarket part if it fails and has been supplied by the customer This is becoming a more frequent issue. Your usual persistence and knowledge has again come to the rescue.

[@williamwicklow5192]

Well done Dave great video well documented loved it 👏👍

[@davesterl]

Awesome, thank you!

[@wackey3455]

well done dave you got to the bottom of that one great job

[@theautomotiveclinic3582]

Awesome stuff Dave, would of been very easy to go down a rabbit hole on this one 👌

[@davesterl]

Absolutely

[@mikeberry304]

Great video Dave, as we all know , if it comes in a white box , it should say on the outside, fit at your own risk , cheap crap , Poppy is growing up so fast , we took our daughter to university today near Liverpool, she wants to be a primary school teacher, up at 6am tomorrow (sunday) , swimming competitions with our youngest (16) , knackered doesn't come into it 😂😂😂👍

[@davesterl]

Buy cheap buy twice isn't that what they say. The kids have the run of ye lol

[@Anode_Diagnostics]

Great find and excellent presentation, I have seen where a bad earth or missing earth can cause similar affect, the current flows via a different path which can cause some residual magnetic flux in the reluctor ring and the fix is to de-magnetise the components or fit new ones. Anyway great video.

[@davesterl]

Have you experienced that yourself?

[@Anode_Diagnostics]

Not personally but saw a case study on it and the position sensor was doing exactly the same thing as yours and inverting, once the reluctor was de-magnetised it was fine.

[@davesterl]

@@Anode_Diagnostics don't believe everything you see on KZbin

[@davesterl]

Terrence, just to let you know some of your comments are held for review by youtube as they contain links to other videos. I have read them however and all i need to say is you can make your own deduction. Cheers Dave

[@Anode_Diagnostics]

@@davesterl Okay Dave, much appreciate your feedback but "KZbin" wouldn't be worried about me linking a KZbin Video on your KZbin even though it's someone else's video, unless that is if that someone or you made a complaint about me doing so. I can't imagine Bernie being worried about it after all it's giving him exposure and I did so in good faith just in case it was of interest to YOU and your viewers. I agree with your video and enjoyed it very much but was taken back by your comment about not believing everything you see on KZbin, your not the only one who is smart enough to know that. No matter how old you and I may be we can always learn something new from other people the trick is to filter the good and present good evidence to disprove the not so good, that was why I watched your videos because I knew that I could learn something new even though I have lots of qualifications in this field. I said it before and I'll say it again you seem to be a very good technician and you present your videos very well but your not the only one who can do that on here your one of many that I enjoy or at least enjoyed. Feedback is a good thing as you learn from it normally. Cheers, Terry. PS, Written in good faith.

[@seeker9969]

Great video my Murano is doing exactly the same thing dammit

[@sleepwalker8600]

Hi Dave, whereabouts in NI are you located, are you far from Newry?

[@TheGibby3340]

Nice catch David. That would be easy to overlook. Another case of cheap rubbish costing people money, not saving it. 🍻

[@davesterl]

Yes Ian, was defo a twist in the tale for sure. The high pulses are adjusting the VVT to its limit then shut it down

[@darrenflounders2803]

scope saves the day

[@davesterl]

True but you need to know what to look for also

[@clueless6559]

Did you try the originals to see his original fault ? was it a no start ?Nissans dont normally start without a good cam signal , just subscribed from hearing about you from Peter Kennedys channel that i really like 👍

[@davesterl]

I did show the original on the scope in the video

[@clueless6559]

@@davesterl yes i saw that with the screwdriver test, i meant in the engine on the scope, they do run ok with the signal inverted ,seen genuine ones do this, great video though with loads of content, 👍👍

[@davesterl]

@@clueless6559 No, they don't run ok with the signal inverted. Inverted meaning the opposite to what it should be. You can have either depending on whether the teeth are male or female. I cover this in the video

[@clueless6559]

@@davesterl Ok dave , dont want to argue with you ,

[@davesterl]

@@clueless6559 ok, just do not post misinformation on my channel

[@rmc5278]

hi Dave , where do you get this service data from ? thanks.

[@davesterl]

Nissan

[@vodonnell1]

Good one moral of the story use ONLY OEM parts.