Yeah I now have a crank no start. No gas is going to motor or fuel lines. New fuel pump, new plenum gasket, new vac lines and injector lines. It would run but sromp the pedal and fo no where.. Throttle position sensor I was told possibly. But I don't think I hear the pump humm when I put power on. Why's it not getting gas?, and not starting. I'm putting all back together to do a one scan. New camshaft sensors(2) up front, have new maf sensor, ne crankshaft position sensor not hooked up. Is there a fuel pump relay,, and or would I need to replace or check anything else. It ran but wouldn't go. Changed pump,coils,plugs,camahaftspos. Sensor 2, new maf sensor. Any clues or ideas.its been sitting a while, and I want it back going. So rps, pedal position sensor I'm hoping right?. I don't know what NATS is. All fuses good,relays I believe so to. Please help, thanks

 

You say you don't know what NATS is. Well, you really need to get familiar with NATS. Do you have your Owner's Manual? Read up on immobilization.

 

NATS/Immobilizer issues has to
do with the security system on your Maxima.
​​​
Have you checked the fuel filter?
what are the scan codes ?

Buy a plug-in OBDII scanner
And an OBDII App from what ever
App store your mobile OS is a part of.

This way you can look at those codes
When ever you want to.

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​​

 

Thanks. I searched and was told there's no fuel filter.like in line. That it was with fuel pump. Which I swapped a whole new one with pump n filter built in. Barely had car long and don't know it very well at all yet. I have 2 OBD2 scanners I'm going to try,once I reconnect vac lines,injector lines and plug all in, and put battery in. Then with power I want to scan immediately. I'm gonna look into NATS as you suggested. I haven't changed crankshaft position. Sensor but I'd believe my OBD2 will throw that code too? I don't hear fuel pump humm when powering I remember when I installed it. And found no fuel pump relay on this car.idk.its what AutoZone said when I asked about one, or if there was a fuel filter outside the pump in tank, and they said no, nothing came up. I truly am greatful for any and all advice, thanks

 

It sure sounds like one of the
CPS sensors. But without any error
codes you're more or less shooting
in the dark.

For starters.
I would just put the battery in , attach the
OBDII scanner, place the vehicle in ACC
mode and retrieve the codes.

Go from there.

 

Sounds like you're shrugging off NATS because it's "part of the security system". Am I reading you correctly?

 

No. I'm not shrugging nothing off. I'm thankful actually. I've dealt with BMW e46s needing several same components synced I believe. First Nissan, I know not much and never found an answer of any. So thanks very much. I'm going to research NATaS n immobilization system on 11' maxima sv. Thanks, n nah, I never shrugged any reply, just didn't see it all. So do know I'm grateful

 

Read up in your Owner's Manual about NATS. It should tell you if NATS has been activated.

I own many 4th gen Maximas. Only 99's have NATS. When activated, the security light stays on solid red when trying to crank the car over to start it. I can't speak for the 7th generation Maxima, as I've never owned one, hence why I suggest to read your owner's manual to get familiar what to look for and confirm NATS has been activated. Based on your symptoms, it sure does sound like it. But, you need to confirm.

To troubleshoot NATS, read up in the Factory Service Manual (FSM). Free to download in my signature.