Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Do you still have the ORIGINAL oem style battery terminals? the skeletal positive and thin negative one?
If you have those big aftermarket terminals I would start by replacing with OEM terminals, I have seen that cause no starts in cold temperatures.
The other thing I would do is when this happens again, take a hair dryer or a variable heat gun and slowly warm up the ECM before trying to start it.
If it starts after you warm up the ECM then the ECM is the problem. Have seen this as well.
The ECM is on the passengers side firewall next to the IPDM.
More commonly when the jump pack solves the problem, it's a battery terminal issue.
When the jump packs don't work it's an ECM issue and warming it solve the problem.
If you need further assistance let me know, if not just be sure to leave a kind rating so the site credits me for my time.
Well i gave you a sufficient amount of info to work with and never heard back on any of it so i am not sure where we are at here.
The massive voltage drop when cranking though leads me to believe you need a new battery or the terminals are stretched or corroded or aftermarket.
I see these cold start issues just like yours all the time. Try the things I mentioned and your sure to resolve the problem.
You need to put a hair dryer on the ECM on the mornings its super cold and won't start.