Same 04 max
 

I changed out both crankshaft sensor cuz the way the car was running and pointed to it so I ordered a cheap set off Amazon and the car ran perfect for a few days than back to not being able to for over 3000 rpm and stuck in 5th s
i scanned it said 1st crankshaft bad so I just bought a much better oem to put in
but took for a drive this morning and acted fine
so not sure what this could be
any ideas ???

Got What You Paid For
 

Cheap crankshaft and camshaft sensors from eBay, Amazon or rockauto can be a hit and miss from a longevity perspective. I actually use them myself. I had the same experience as you in that new cheap sensors died within a week or two. However, I also had ones that lasted a good 3 years. So it is unpredictable.

My philosophy about cheap parts: if it is way more less expensive than OEM, if the part is easily replaced and if it is my car, I do go the cheap route. I just keep an extra sensor on hand in my garage in case the part fails prematurely.

However, if it is not my car, the part is difficult to replace and / or price is only slightly cheaper than OEM, I just buy OEM and avoid the headaches. My 2 cents of advice.

Thanks I relieved a lil hopefully the new one is good
just a pain in the *** when it goes in limp mode

Maybe you can help me with my other questions
as you see in pics I have 2 connectors that have no other connectors around so is it possible that some just don’t get used
https://cimg7.ibsrv.net/gimg/maxima....f961b24e0.jpeg
https://cimg8.ibsrv.net/gimg/maxima....c3260b15d.jpeg

Very strange. My car is a 2003 and I do not have unused plugs. I'll let other chime in to see if they have the same issue.

Just find it weird I would assume something goes to them but there’s no other ends anywhere