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Why Did My Z, Keep Revving? Video.
I've tried to tell a lot of you that I've been having a lot of problems with my 2009 370Z and my 2009 Infiniti FX. While my FX is in the shop for the 3rd week getting it's dashboard ripped apart... (Video on my channel) I took the Z back out since the roads have been dry in Wisconsin.
I felt like I was driving a Toyota with the accelerator stuck. I first noticed it when I was coming off the highway to an intersection. My car would not slow down without hard braking. Come to find out, when I came to a stop, it would just start revving up. The video is further proof that I'm not making things up. I didn't touch that gas pedal. It would really bake my clutch when I'd go to take off. Was the accelerator stuck? You tell me. My floor mat wasn't even close to the gas pedal. I checked it over and over. I even pulled it back 2" to make sure. I'm having some really bad luck with these cars. YouTube - Nissan 370Z Revs in Cold My broken Infiniti Nav video is here... YouTube - 2009 Infiniti FX35 Nav Screen Broken |
Perhaps you are cursed due to being a weatherman? jk :) Have you had the car/SUV at the dealer enough times in the required period to qualify as a lemon?
Good luck with everything, and let us know how it turns out... |
This is Unreal...
Yeah, call it a curse. Who made Nissan's throttle? Is it CTS? My car wouldn't stop revving! Is it a Toyota?
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370Z Stuck Throttle? Video...
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Try re-booting the car (battery disconnect for a few minutes)
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You need to reset it anyways... just go out and do it now. The system might just need a hard restart and that could clear your issue.
If not, I would take the car to the dealership and show them these videos. This is a potential safety issue, so I don't think they would send you off without a fix. The throttle assembly needs to be inspected (could be an issue with the hardware there) and the ECU needs to be checked... maybe a software glitch. Either way, you need to take it in and demand they fix it! Complaining definitely isn't going to help any... take it in! If I was your service manager I would assure you we would not give you the car back until we resolved the issue... and I'd make sure you had a loaded loaner car provided free of charge for as long as it took to repair! |
Sorry to hear it. Quick question, if you take the car off the "S Mode", can you replicate such behavior?
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That was the Z saying "Its too damn cold out for this sh#t!! Get me back home!"
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SynchroRev was the only thing that helped me. |
Wow, Thats a bad run. My mom has a 2009 Fx35 and I have my 370 and both have been flawless cars, even here in the Utah cold.
I would take it to the nissan dealership or if you have the ability inspect the cables actuating the throttle, there is a possibility that water got in them and froze causing them to stick open. But its just a guess. |
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It's "drive by wire" so no cabes involved. Totally electronic. The VVEL also does a lot of throttling on the car, not just the throttle bodies. Several potential areas that could be causing this.. If a re-set doesn't do it, the dealers diagnostic machine will certainly pinpoint the fault. |
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If you weren't implicating that I suggested a bat disco in the intersection then I just was confused by the double quote. :tiphat: |
You have a Yaris in wolf's clothing...
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Is it a stuck pedal like Toyota? Best way to find out is let it replicate again, and then try to pull/lift up the accel. pedal...if you find that it stops revving when you pull the pedal up, then it's a stuck pedal...however, it seems it maybe a motor issue since when you put it in gear, it doesn't rev at all...
...and also, does your MPG really read 23.7??? and with a little over half a tank left, your DTE reads 231 miles??? |
Your ECU has gremlins.
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forgive a "dumb question"... just out of curiousity was the car warmed up to normal operating temp when it was doing this?
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The oil temp looked low.
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TheWeatherman,
I know for a fact why your 370z seems like it is continuing to rev... Here is why: first of all you are in sport mode which enables synchro rev match. Secondly you pulled the transmission out of gear and left it in neutral from 5th gear. The way synchro rev match works is that it anticipates your next gear so for instance if I were to shift from 5th to 4th it would rev for 4th gear's rpms. Now SRM (synchro rev match) only revs when in neutral or at the gate of the next lowest gear. That is your problem... well not a problem just a lil uneducated on the feature. If this bothers you turn off your SRM by pushing the sport button until the little S disappears from your gear indicator. This has nothing to do with your car being warm. Now if you want to try it again leave it in gear this time and just clutch it... I bet you it wont do the rev climb. So in final your Z is perfectly normal... so stop babying it and drive it like a big boy :tup: |
^ That's a pretty astute observation, Mike! TW, do you in fact always go from a high gear directly into N? You may not, but we can only go by what's in the video, so . . .
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- Ty |
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First, the Syncro rev match doesn't anticipate anything. It is purely analog in that Microswitches in the gate are triggered depending on what gear you intend to enter. You can actually feel the point of switch engagement when you move the stick and the revs go up...The only way this could happen as in the video would be if the Microswitches were sticking because of the cold......However, a shift to neutral should not have triggered them at all unless it was a sloppy shift and bumped against the switch engagement point. |
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I don't really think SRM is the cause here. The OP needs to disconnect the battery to reset the ECU, then see if he runs into the same issue again. If he does... take it in for warranty service. |
I really believe it had nothing to do with the SRM. When the car was stopped, idling, it still idled at around 3,500 RPM. SRM only is effective when the car is in motion. It uses speed and gear position to find it's rev point. If I'm stopped and outside of the car, it shouldn't be revving at 3,500 RPM.
As far as the temperature, when it's this cold, the oil temperatures reflect that. It was in it's normal operating temperature for this ambient temperature. If you drive your car when it's 0-10 degrees down the highway, you'll notice your oil temp will be between 170°-190°F. That's where mine was. Car was out and about for at least 25 minutes when the video was taken. I don't have an oil cooler. I don't always drop to neutral. When I was coming off of the highway to a stoplight, the car was actually speeding up. I was hitting the brakes in 6th trying to come down from 60MPH when I noticed something was wrong. Hence, nothing to do with SRM. Try it in your car. Go cruising around the city, pop it in neutral, put the stick right in the middle of the gate, don't touch the shifter, and the revs should drop down pretty far... Not 3,500 RPM. Something was stuck on my machine or not working properly. It scared me at first coming off the highway. It has never done that before. 12,000 miles... I know when something's broken. SRM... No. |
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I would definitely reset the ECU and see what happens. It could just be some random glitch, but it seems like it may be something more serious. See how the reset goes and like I said earlier, take it in for service immediately if it doesn't. And obviously, be careful! |
M4 Mustang is right. SRM doesn't act like that. It sounds like you drive like me. When the revs get too low, and I'm coming to a stop, I drop it to neutral in the middle of the shift gate. Like Mustang said, if I start hinting that I'm heading toward a gear, it will aggresively blip at me. This was just a constant rev that wouldn't go down. Thanks for backing that up M4.
I should reset the car, or maybe it has a code stored and I should take it in. Hmmmm. |
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Btw, just to be clear, based on this happening when you're not even in motion and outside the car, I would agree that it's not SRM. I just think it can't hurt to see if turning SRM yields any change in behavior is all. Every little clue helps, after all.
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Instead of worrying about how this situation scares you just take it to the dealer its under warranty!!!!
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+1 |
TW, I have played around with SRM quite a bit and yes it will hold 3500rpms in neutral if it is near one of the gates. I as a fun lil habit when coasting in neutral will push the shifter laterally to the lower gears and it will act like it rev'd but I never came even close to a gate... in my case it would hold it for several seconds and then finally relent. I believe with turning the SRM system off while running the car for a few mile then turning it back on will help trouble shoot the issue. For sure I know it is an SRM issue like I stated before. I didnt see that you were at zero mph earlier and after watching the video again I see that. turn off the SRM drive it and see if that fixes the issue, then turn it back on and see if it continues. if that doesnt work unplug the battery for several minutes to let everything die down and then plug the battery back up and try again.
This is problem shooting 101... Now you say you arent worried but man seriously you should hear your voice in that video. Im not meaning to sound like a prick or an A$$hole but you sound so worried and like a little b!tch. I dont mean to be rude but take a step out and realize its a machine it may have problems and its not doing it to you on purpose. Its not bad luck either and if the problem persists take it to the dealer this is not that big of a deal! and this coming from 1 of 2 on these forums that has blown a stock motor already! I blew my motor at 10,100 miles and 1/2 mile from the dealership cause the motor was making funny noises. My car has been in more shops for over 6 months than it has been on the road. Just relax and take another video without the "why is this happening to me" attitude... Thanks and we all want to see you enjoying your Z so try these trouble shooting ideas before you shoot them down. Mike |
chalk me up in the group that says take it to the dealer and let them figure it out. probably just a hard reset on the ECU to relearn the parameters. just post what they find and then we'll all know...
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