Why won’t my 2014 Altima start after replacing key parts?

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May 11, 2025 at 3:10 pm #942 Reply
Sarah
Okay so I put in a New battery, New alternator and belt, New starter, New spark plugs, New battery connector and new brake switch in my 2014 Nissan Altima 2.5L, and I am not getting any power to the car! No crank, no start, no dashboard lights, no windows no trunk and key fob not doing anything even with new battery in it! Any suggestions please!?
May 11, 2025 at 3:10 pm #943 Reply
JG Collins
Well, after throwing all those parts at it, might as well throw in a new engine, PCM, and wiring.
May 11, 2025 at 3:11 pm #944 Reply
Stephen
Dose your car need an oil change, sometimes it can be that is the car starting and staying at the same speed.
May 11, 2025 at 3:11 pm #945 Reply
Dan
fuses, grounds
May 11, 2025 at 3:11 pm #946 Reply
James
Start from the beginning, does the battery have charge, 12v or more, is it connected properly, is the earth lead from the battery to car hooked up right, then check fuses, then check ECU.
May 11, 2025 at 3:11 pm #947 Reply
Daniel
Did you blow the main fuse at the battery? And dumb question, did you take the plastic caps off the battery?
May 11, 2025 at 3:12 pm #948 Reply
Michael
Take the plastic caps off the battery posts.
May 11, 2025 at 3:12 pm #949 Reply
Phillip
Did you take the plastic caps off the battery?
May 11, 2025 at 3:12 pm #950 Reply
Jimmy
Do you have any power at all? Check your relays and fuses. You might have done all that for nothing. If anything, pull out the OL trusted multi meter and see where you do have power and find where it stops. Often that is the problem and proceed according from there.
May 11, 2025 at 3:14 pm #951 Reply
John
You need a multimeter and a code reader or scope to track down the problem. Check all your fuses in the ECM with meter; sand with battery wiring.
May 11, 2025 at 3:15 pm #952 Reply
Corey
If you’re sure your battery terminals are on and tight and no fuses are blown, check the black battery cable that connects to the battery. Find the other end and see what it looks like. If it’s green or coroded, it’s not making a connection. It connects to the body or frame somewhere, and that’s where I’d start.

Leave the key in the on position while you wiggle and jiggle wires, so you can hear when a connection is finally made. If the black cable looks good, start tracing the red wire (usually goes to the starter) and wiggle that around and make sure both ends are clean. Other than that I’m not sure brotha.
May 11, 2025 at 3:15 pm #953 Reply
Joe
Ignition fuse, fusible link, grounds, BCM.
May 11, 2025 at 3:15 pm #954 Reply
Chris
Check your grounds. All good to have power, but without ground you’ll get no power.
May 11, 2025 at 3:16 pm #955 Reply
Zack
Make sure all your wire and cables are tight from the battery. Chack for blown fuses check the ecu maje sure it’s not fried check your ignition switch make sure everything is connected good.
May 11, 2025 at 3:22 pm #956 Reply
Gary
Check high amp fuses in box under hood.
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Why won’t my 2014 Altima start after replacing key parts?

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