2014 370z Engine cuts off while driving, HELP!!!!

engstah

Code p0101 showed up. Took to the dealer and they couldn't do much. Charged me $75 for a diagnostic fee. They said it was my intake and test pipes. They said the test pipes and intake messes up the air/fuel ratio which causes the engine to stall at random times. They recommended me to get a tune so it can be fixed. I never did an ecu reset to my car after any mods. I just did the ecu reset and my car feels like its running MUCH better. Throttle response is much quicker and there is way more power. I just upgraded to 20' wheels from 18' and the steering response got better as well. Before the ecu reset, the steering wheel was stiff and hard to turn. After the ecu reset, the steering wheel is free and reponds well. Does this have to do with air/fuel ratio? I did the ecu reset so it can relearn the correct air/fuel ratio in order for the car to run better. So far no problems and drives like new after ecu reset

jchammond

i can usually get 500 per tank with mine,,,but that's re-fueling with one light on fuel gauge.
i may have an issue?

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Chuy

Check your MAFS one might be bad

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jchammond

I would definitely put exhaust back stock & take it to dealer for warranty;;; hopefully they haven't flagged the vin code as (warranty voided due to modification) 5yr 60k on powertrain & 3/36 bumper to bumper-unless you didn't purchase extra.


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engstah

How can I check if ones not working? I am planning to clean them as well

engstah

I believe one of the MAF sensors are bad. I had my car on, unplugged the driver side maf and car died. Which indicates that the driver side MAF is working. I unplugged the MAF for the passenger side, car was idling funny and did not die. This means the passenger side MAF is faulty correct?

ChesapeakeVA

First thread I've found pertaining to my issue. Reviving this thread. Engine cut for the 3rd time.

First time a month ago, early in the morning, turning out the driveway. Half awake I assumed I stalled. Then it cut out once on both of the past two days. Once in 4th on a twisty country road, the other on the highway.

Neither were too sketchy in the circumstance. Was still easy to turn, brake.. calmly clutched in and started it back up.. but I can see how this would suck when I'm being an ******* on an exit ramp. Gotta baby it for now.

I have ran the tank low a few times without intending to.

Hoping it's the fuel pump and not something more sinister

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Wilson2608

Look the dealership is just blaming the issue on something you've done to the car because they can't find the problem. I ran Intake and high flow cats without a tune for like 4-5 months with no problem, however they are telling you the truth whenever they say a tune will help. I've never seen a car stalling from installing a intake however I do know that it can make your engine run slightly lean without the tune so it could be your problem but I doubt it. I don't believe the test pipes would have any effect on you car running or stalling either. If I were you I would check for Intake leaks and clean the MAF and go from there. If the MAF is truely broken you should be throwing a code for it, if not give it a cleaning and hope for the best. Also if you have a nice scan tool look into STFT or short term fuel trims and long term fuel trims (LTFT). These can help you get a better understanding of what's happening to your vehicle by determining if the vehicle is running lean or rich. Anyways best of luck to you, the first place I'd start is the MAF and to look for Intake leaks

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Stillen G3, z1 Intake Manifold, Stillen Headers, Z1 HFC's, Stillen Catback. 330whp 267 ft- lbs tuned at Z1 motorsports.

Wilson2608

And I would say if you can't replicate the problem with over half a tank of gas then your most likely experiencing fuel starvation. One thing I have learned about the 370z is the gas gauge isn't very accurate ( at least on my 09 it isn't)

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Stillen G3, z1 Intake Manifold, Stillen Headers, Z1 HFC's, Stillen Catback. 330whp 267 ft- lbs tuned at Z1 motorsports.