Hesitation under 3K RPM's

luigi90210

i think it was used as an example and Elan took off from there, i was replying to Elan's response since that doesnt look normal for an AT to be lagging that bad, the video showed shifting and bogging worse than my DSM(and thats a 90s slushbox)

either way, i think OP's Z is begging him to mod it

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jwick

We should all be modding!!!

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P's_Z

That is correct...6mt

P's_Z

And I will obey my Z's needs...

P's_Z

thank you sir

Elan

Someone posted a video of an auto G. I addressed that issue!

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P's_Z

Hey guys, just a bit of an update: i found a gas station with 93oct, so i filled the tank up, reset ecu and have been driving 5 days hesitation free, in fact..." car feels awesome! its surprising what a difference 2oct make!

Maybe im getting a bit ahead of myself, but it looks like the issue might be solved(knock on wood)!!! ill keep you guys posted

P's_Z

Hey guys, just another update...two full weeks hesitation free!

Can say enough of how much better the car feel with 93oct gas. A smoother response and definitely more powa!!!

Hope this can help someone in the future and runs into the same luck

InnerDragon10

Man I thought it was just me - I get the same hesitation every once in a while if I'm upshifting too low in the RPM band; I have a '14 Nismo. I use 93 octane all the time, but I guess a combination of Florida heat and low RPM shifts = unhappy Z

P's_Z

Sorry to hear that man. For me, 93oct has been working fine on my Z since then. Maybe some modding and tuning as others suggested might do the trick

Have you tried different brands by any chance?

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Funkdoobiest

Some of these posts are laughable. Or ludicrous. So you're telling him to spend a couple thousand dollars to mod his car.....to overcome an issue, yet has nothing to do with his problem?? How about a solution relating to it? Or information? Yeah that's an idea. These boards get some crazy replies sometimes. It's either someone passing along a "fact" they heard or recommending someone replace multiple parts. Yeah sure it's not my money go ahead, why not? Don't forget to upgrade the rear end too.

More mods isn't going to help a software issue below 3k rpm.

dannonebr

With all due respect to those who are trying to help with the problem, 'funkdoobiest' makes a great point. I wish I had a dollar for every miss-placed online performance recommendation. I've been modifying cars, motorcycles and ATVs for long time. Some of the online advise that I have used has resulted in no difference, more problems or in a blown engine and lots of money down the drain. Some has been very valuable! Online forums are often times basically just opinion boards so the reader beware. They DO provide a valuable asset for those looking for answers but owners must give careful consideration on online advise. There are lot of variables but like every other car 370z's have certain traits.

I too have a hesitation on my stock 2014 Z auto with a Stillen cat back and it's really getting under my skin. It really sucks when you plan to (safely) dart out into traffic (like all Z drivers yearn to do from time to time) from a dead stop depressing the throttle about 25% to 50% and you are waiting a second or so for the engine to rev...... it feels like the engine is going to die in traffic. Is this hesitation simply a 370z thing or is there really a fix for it? I read in Car and Driver review of the 2015 that this is a problem with the automatics. My Z did not seem to do it before 5000 miles, but then again it could be just me as I get into the throttle more than when it was new. I try to stay away from the insidious gasohol. It's easy to say that one needs to do this and do that to fix it, I fear that the people who really know what the issue may be could too too busy to for input. It seems to me to be a programming issue for emissions, maybe restricted intake flow? I have a liter bike that used to do the same until I bumped the idle up a few hundred rpm and it went away, the fuel flow was too lean and the throttle body was closed too much at idle to respond to a rapid change in throttle. Maybe dirty throttle bodies? Just throwing thoughts out there.

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SouthArk370Z

The ECM may be pulling timing because of "high" IAT (as measured at the MAF). IIRC, it starts pulling timing around 85 degF.

Get an OBD/CAN monitor and check AFRs, O2s, &c; you may need a tune.

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Agent K

Just my .02 cents, I too was taken aback when I punched the throttle in 1st gear and there was nothing. That began my quest to resolve the issue.
Pulling like a MF...

Now, I can get her sideways off the line Actually it's kinda scary now...I can only imagine what the boosted guys are experiencing.

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