Joined Mar 10, 2018 · 1 Posts
Discussion Starter · #1 · Mar 10, 2018 Long ignition starts, sometimes cycles 1-2 times before it starts. It starts much faster a better when cold or if you turn it off and try right away there is no wait. We found that the issue may be crankshaft sensor, however can’t figure out where it’s located. Used YouTube videos yet only has up to 4th Generation and the camshaft sensor is located where
they say the crankshaft sensor is supposed to be. Attempted looking in a Factory Service Manual for Nissan only available on CD-Rom for almost $500...not that interested. Just wondering if anyone knows where the Crankshaft Position Sensor is located??
Joined Nov 28, 2019 · 5 Posts Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #1 ·
Oct 22, 2019 I have a 2013 Altima S with CVT, and what I believe is a QR25DE engine based on what I've found. I have posted in the Altima thread - "2013 will crank but not start when hot." Thanks 2006 Pathfinder LE, 2003 Frontier SVE Joined Jan 1, 2006 · 10,670 Posts
The 2013 Altima with the 4-cyl. engine has a QR25DE; the V6 engine is the VQ35DE. The QR25DE has one crank position sensor, located on the back side of the engine block, towards the transmission side. While older QR25DE engines had a single cam position sensor, later models (starting around 2012 or 2013, I believe) have two cam position sensors, sorta
side by side, at the right side end of the valve cover if you are looking at the engine from the front of the vehicle. I would recommend replacing the crank position sensor as well as the cam sensors. Personally, my choice other than the more expensive, genuine Nissan parts, would be NTK sensors from Rockauto. NTK makes the OE oxygen sensors for Nissan and is the same company that makes NGK spark plugs. You would need two of NGK EC0006, about $50 ea., and one of NTK EH0010, about $47. If money
is tight, Beck~Arnley is not a bad choice, as they usually use OE parts, such as Denso. Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #3 · Oct 25, 2019 Well thank you 'smj999smj'. Where can I get more info on the crank sensor location and replacement process? I can't seem to find anything on line for this specific newer QR25DE with the 2 cam sensors. Thank you! Joined Jul 6, 2010 · 3,163 Posts
Are there really two cam sensors? What is the difference between this engine and that in a Rogue? I only see the one cam sensor on top. Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #5 · Oct 25, 2019 Are there really two cam sensors? What is the difference between this engine and that in a Rogue? I only see the one cam sensor on top. Thats what I was seing in most of the information out there. But as explained above by 'smj999smj', the newer QR25DE engine has 2 cam sensors on top to the R of
the valve cover. And also a crank sensor somewhere .... Joined Jul 6, 2010 · 3,163 Posts
Just pointing out that I have looked at the part diagram now on two different models with the same engine as yours and nowhere do I see they two camshaft sensors. Anyway, I think you missed
the point that was made about the crankshaft sensor. Its that one that is more likely to be causing your issues and not showing a code. It is at the back of the engine lower left. For some reason the part diagram pages I have linked to have not displayed, but if you go to Partsouq.com Joined Jul 6, 2010 · 3,163 Posts Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #8 · Oct 25, 2019 I got the the point about the crankshaft sensor, and I will replace that, already ordered it. Joined Jul 6, 2010 · 3,163 Posts
Is there something super special about yours? I agree it's confusing when the part diagrams for your car don't reflect the actual parts in it. Maybe you could find the factory service manual for yours at Nicoforums, and it would make it easier for you to find info about your car. Good luck. Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #10 · Oct 25, 2019 Nothing special, just want to make sure that what Im looking for, the crankshaft sensor, is in the same place. Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #11 · Oct 25, 2019 Just pointing out that I have looked at the part diagram now on two different models with the same engine as yours and nowhere do I see they two camshaft sensors. Anyway, I think you missed
the point that was made about the crankshaft sensor. Its that one that is more likely to be causing your issues and not showing a code. It is at the back of the engine lower left. For some reason the part diagram pages I have linked to have not displayed, but if you go to Partsouq.com Finally! One of
the other responses pointed me to NICOM where I found the factory svc manual. This one matches my 2013 >> QR25DE with to cam sensors In this diagram you can see both sensors labeled 1 & 2. Diag A shows them better when you zoom in
Joined Oct 20, 2019 · 15 Posts
Discussion Starter · #12 · Oct 25, 2019 I just though I'd clarify somethgn here. Technically one is a "cam position sensor" (#2) and an "exhaust valve toming control position sensor" (#1). They are both cams and each has a sensor - so two of them and they are the same parts. What are the signs of a faulty crank sensor?5 Signs of a Failing Crank Sensor. Crank Sensor Problems Could Make it Hard to Start Car. One sign that your crankshaft sensor might be failing is if you find it hard to start your vehicle. ... . Engine Vibration Issues. ... . Fuel Economy Slippage. ... . Uneven Acceleration. ... . Check Engine Light On.. Does Nissan Altima have crankshaft sensors?Your Nissan Altima will be happy to know that the search for the right Crankshaft Position Sensor products you've been looking for is over! Advance Auto Parts has 32 different Crankshaft Position Sensor for your vehicle, ready for shipping or in-store pick up.
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