09 370z engine sputtering while accelerating
 

Wondering if anyone else has experienced this.

I have a stock 09 370z auto with 45k miles. In the last couple weeks I have been noticing while I accelerate from 40 to 50mph my car begins to sputter for about 5secs, no engine light comes on. If I try to give it more gas, the problem continues, till it catches itself. The problem usually happends within the first 20min that I start my car. I use premium gas and have had all my oils changes maintained through the Nissan dealership that I purchased my car from. Wondering if anyone has had this issue????

:ugh2:

Which gear are you in? Auto or manual?

Notice a VDC slip light flash briefly on the center of the dash? While the tires warm up it is pretty easy to break traction at 40mph if you floor it.

It's a automatic. Not bracking traction, def feels like something in the motor or trans

I would suggest to have a trusted dealer diagnose it and see what's causing it.

I'm interested in the results. Please keep us posted.

Curious, have the plugs been changed?

I think I had this same sorta thing happen, where my engine would seem to hesitate from time to time. I bought a $5 can of MAF sensor cleaner from Autozone and cleaned three parts: Two Mass Air sensors - the ones in the intake tubes, and the MAP sensor - Behind the intake manifold near the fire-wall. The problems almost dispersed.

I was thinking of doing plugs also, but will probably wait until I get my exhaust, and change the plugs right before I get a tune. I have 52k miles

Hmm...Weid Fuel pump might be going......durty injectors.....Clogged Filters.........And Sensors.....umm thats it......well get a engine management system of some sort = verry easy to read problems lol

Wut?

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x2

Sounds like a misfire, maybe a bad coil. I'd take it to the dealer who regularly services your car. You could have a pending engine code, which wouldn't trigger the engine light.

sorry im late to the party but it seems that if the 09's are just a little low on oil,(1/2 qt in my case with the puralator oil filter) it will do this sputtering.keep it topped off and problem solved.i initially thought it was the maf's and map sensor but nope,low oil was the culprit on my 09 with 61k on the clock.

Just a quick note, on stock 370's these iridium plugs last for 110,000 miles. And if you do replace them, don't buy it from the dealer!! They charge 20-23 per plug, and as high as $29. Buy them from Z1

Also unless specified, nearly every Nissan dealer will put cheap dino oil instead of synthetic or ester based. Don't buy that from them either, they charged like $18 per quart for Ester. Again, buy from Z1 lol

How would being a half quart low directly cause any type of sputtering? Sounds like a fuel/ignition issue to me.

370ZGirl, can you give us an update on this?

beats the hell out of me.it stopped after i added the 1/2 qt.maybe its just coincidental.who knows with this car.

:iagree: ...

Hi Everyone, sorry it took so long to respond back. The sputtering then turned into limp mode. At any mph I would try to give it gas, and the car had no power. I took it into the Nissan dealership that I use for my maintenance and they kept my car for over two weeks cause they couldn't get it to act up till the 14th day. They had it hooked up to the computer but it wouldn't throw a code. It was the weirdest thing they had seen. The mechanic took my car home and noticed when he parked my car the brake lights started turning on and off rapidly, and that's when he determined it was a faulty brake switch. They replaced it and I haven't had any problems since!

wow ! never would have thought that.thanks for the info :)

That is bizarre! I wonder how the brake switch was causing that? Glad to hear its resolved.

Brake switch cuts throttle input on this car. Someone else had that happen to him at Z-days last year or the year before, very difficult to diagnose unless you are looking for it. Glad they figured it out eventually though.

Shouldn't make the car sputter, would just feel like someone disconnected the throttle pedal momentarily.

:ugh2:

I had that issue for awhile and added a shimmy to the brake switch.

Just got over on this thread from another thread that Digi has been posting on.

Both Z's going in on Monday for brake switch replacement (not the one that activates the brake light but the other one that sends signals to the computer).

Will see as two cars are going to be tested.

After hearing that the brake switch was faulty, this whole thing makes perfect sense.

After Toyota began having issues with the "sudden acceleration" in the Prius, Nissan began plugging a feature that has been built into their cars since 2005 - the brake override.

To avoid similar Toyota-like issues, in the event the brake and throttle are simultaneously activated, the brake gets precedence and cancels out any throttle input. A faulty electrical signal from the brakes will cause the sensation OP was getting - a stuttering of the throttle in rapid succession. Considering no human short of Slayer's drummer would be able to replicate this with their feet, you wouldn't initially feel that this could be the cause of such.

Glad you got it resolved. Yet another possibility to add to the troubleshooting flow of stutter upon acceleration.

The tech at my dealer is familiar with this issue as they have replaced the brake switch on at least 1 Altima.

Blame the people who drive with both feet! It irritates me to no end to be driving behind anyone driving like that.

I wonder if this is happening to me, I don't have any codes but car has no power. Car is at dealer and they are going to replace Mafs to see if that's the issue.

I may need to tell them about this.

If the engine is running fine with no weird misfiring, you should get this switch replaced. I dealt with it almost a year after I got my car. It's scary when trying to make a left turn and the car barely wants to move even with the foot planted to the ground.

I have already had to replace my faulty brake switch twice... Now I am finding out this is a common thing with the 370z. Def change the brake switch if your car has no power when you have gas paddle all the way down.

Yeah my **** has no codes. I can turn vdc off and gas while turning from a stop, it will just go without even tire spin or loosing control. I did unofficial run from 0-40 and it took about 6 seconds.

Damn, supposedly they said the checked my brake switch and also changed Mafs, they said car is still same. And basically told me they don't know what to do, so I can come pick the car up.

So the car is still sputtering and the dealer is just giving up? Sounds like a $hitty dealer.

Well mine doesn't sputter like op.

I have no power though, if you drive normal it seems fine. But give it any kind of gas, and it drives like a Sentra.

Well u jinxed me. Just picked it up and it did die on me twice and now my ac doesn't blow cold. Called and they said bring it back 2mor.

My bad bro :ugh:

Good luck with that dealer :tiphat:

I doubt low oil would cause this symptom. If it only happens at 40-50mph, I'd suspect a sensor or throttle position hic-up with the automatic transmission. If it's gone away, you'll never find it unless it returns. Till then - zoom zoom zoom!

Oils isn't low, I think they got something wrong when messing with vvel actuator maybe from the last go round. But I did take it back Thurs, and talked to service manager who said they "will do what they need to do to get it right."

Don't let screen name fool you ......3 pedals. :driving:

:eek: Hopefully my car will be fixed tomorrow as far as power loss. They said they think it is ECU because ECU is showing my car is automatic, even though it is a manual. So going on 3rd week hopefully get it back by the weekend.

someone flashed the wrong rom on your car? shitty

Edit: it isn't possible for a manual ecu to "think its an automatic" unless flashed with the wrong rom, there is an entire chunk of code that would have to mysteriously appear for it to do that, the auto code is not in a manual rom and "turned off" it is missing entirely, or at least thats how it was explained to me.

I'm having this same problem. Was told it was a faulty tps on my passenger side throttle body. Replaced it 2 days ago and bam happened again! Mother**! So pissed off. This has to end. Car drives like a super car one min then traction control light comes on and bam! No power Wtf! Someone please help!

same thing here.:iagree: talked to a nissan master tech and said may be trash on a maf or possibly a faulty brake switch like beginning of this thread mentioned. makes sense to me. gonna get it checked out soon.