Car wont up-shift/rev over 3500rpm/jerking (with video)
Hi there,
I have following 2 situations happened to me, wondering if anything experienced similar/know the cause/solution. 2009 G37 coupe /80k km/ auto few months ago, i was driving in the city and car would not upshift. when i step on gas it wouldn't rev up and i floored it, and the rev bounced between 3000-3250rpm, car kept jerking. try using the shifting paddle did not help. i happened to be around the Infiniti dealer so i kept up with traffic and went there. Parked, got the tech came out, he sat in my car, started up, drove for a round and the same issue did not occur. i did took a clip to show him but he said it would be because i just put new winter tired on and caused it. link to video: ( fast forward to yesterday, i was on the highway, almost got into a crash as the same problem suddenly occurred. i was about to change lane and pass the car next to me, when i stepped on the gas/and eventually floored it, the car was jerking again, rev locked at the similar rpm like last time, expect i was on the highway so when i floored it, i actually felt the car was slow/lost power. Again, shifting paddle did not help, so i waiting the traffic up front cleared a bit, put it in manual sport mode, i was able to shift up all the from 7th gear (was at around 120km at the time) but not shift down. so i basically kept myself between 4th-7th gear, rev limited at 3250rpm and whole trip till i eventually got home. This time it does worry me and i almost got into a crash when i was changing lane. anyone had experience this? idea? thoughts? |
That's called limp-mode. You should be getting a CEL. If not, find someone who can plug into the OBD port and check for codes.
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My car went into limp mode after intake install. Forget the code but it didn't trigger the engine light it was pending when I plugged the scanner in. Erased the pending code and it hasn't happened since. About 2k miles or so ago. No idea why it happened or what fixed it but it was so scary cat shifted fine but no power.
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Originally Posted by slartibartfast
(Post 4058895)
That's called limp-mode. You should be getting a CEL. If not, find someone who can plug into the OBD port and check for codes.
they said my 2009 warranty has run out. they suggested me to bring it in for a code scan ~$40 for a diagnose and see whats next |
Originally Posted by PNW_IPL
(Post 4058900)
My car went into limp mode after intake install. Forget the code but it didn't trigger the engine light it was pending when I plugged the scanner in. Erased the pending code and it hasn't happened since. About 2k miles or so ago. No idea why it happened or what fixed it but it was so scary cat shifted fine but no power.
and i have put on fast intensions exhaust when it happened again few days ago. so looks like it could happen both on stock/after market installed |
Originally Posted by WalterC
(Post 4059470)
thanks pal, i called the dealer, the tech said they are not aware of this situation - said its not common
they said my 2009 warranty has run out. they suggested me to bring it in for a code scan ~$40 for a diagnose and see whats next |
Originally Posted by Epiphany
(Post 4059475)
If you can get it to drive normally to one close to you, any auto zone type place should check for codes for free for you, to let you know if anything is pending. Is your car awd?
no, mine is RWD maybe my shop who does my oil change can do a code scan for me next when i go it. It hasnt acted up the past few weeks so im putting this issue aside for now. Off topic - just went through a slow slope and bent my muffler and scratched my exhaust tips...it hurts... |
make sure your maf sensor isnt loosely connected...
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Has anyone found a answer to this problem? I have done everything I could think of with my37. I have replace the cam sensor and actuators. I have also replace the oil pressure sending unit. But I keep getting a upshift failure while I’m driving. Could it be a bent fuel line causing this problem; a bad fuel pump; or the cat could be full of debris |
Originally Posted by Joshua Pilgrim
(Post 4189627)
Has anyone found a answer to this problem? I have done everything I could think of with my37. I have replace the cam sensor and actuators. I have also replace the oil pressure sending unit. But I keep getting a upshift failure while I’m driving. Could it be a bent fuel line causing this problem; a bad fuel pump; or the cat could be full of debris See my thread here: https://www.myg37.com/forums/engine-...-sprocket.html I hope I'm wrong though. |
Has anyone found a solution to this issue? I’ve been dealing with the same thing trying to figure out what’s happening
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I'm having this problem with my 2013 G37xS
I'm having the same exact symptoms on my G but it's throwing the P0011 code. It happened right after an oil change. I've cleared the codes, change the oil pressure sensor (because I already knew I needed one), I've tested and swapped the vtc valves, I've changed the cam sensor and MAF sensor, I've even gone as far as changing the gallery gasket and making sure the timing is correct. I just recently changed the VVEL control module and I still haven't found the problem. My next step is to change the VVT sprocket. Has anyone found a solution to this?
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Originally Posted by WalterC
(Post 4058865)
Hi there,
I have following 2 situations happened to me, wondering if anything experienced similar/know the cause/solution. 2009 G37 coupe /80k km/ auto few months ago, i was driving in the city and car would not upshift. when i step on gas it wouldn't rev up and i floored it, and the rev bounced between 3000-3250rpm, car kept jerking. try using the shifting paddle did not help. i happened to be around the Infiniti dealer so i kept up with traffic and went there. Parked, got the tech came out, he sat in my car, started up, drove for a round and the same issue did not occur. i did took a clip to show him but he said it would be because i just put new winter tired on and caused it. link to video: (Inifiniti G37 upshift fail - YouTube fast forward to yesterday, i was on the highway, almost got into a crash as the same problem suddenly occurred. i was about to change lane and pass the car next to me, when i stepped on the gas/and eventually floored it, the car was jerking again, rev locked at the similar rpm like last time, expect i was on the highway so when i floored it, i actually felt the car was slow/lost power. Again, shifting paddle did not help, so i waiting the traffic up front cleared a bit, put it in manual sport mode, i was able to shift up all the from 7th gear (was at around 120km at the time) but not shift down. so i basically kept myself between 4th-7th gear, rev limited at 3250rpm and whole trip till i eventually got home. This time it does worry me and i almost got into a crash when i was changing lane. anyone had experience this? idea? thoughts? |
Update on these symptoms with the p0011 code
Originally Posted by vqmaxxx
(Post 4313885)
ignition coils, light as well replace the spark plugs
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LIMP MODE....car won't rev over 2500 to 3500 rpms/ P0011 CODE
Hey to all my enthusiasts out here rocking these fine g37s! So back in June my car went down after getting my water pump changed and rear galley gasket by an infiniti dealer in March. (Did that to get proper timing and warranty in parts and labor) anyway so my car would start bucking and wouldn't go over 2500 rpms and went to LMode. I checked the cam shaft sensors and connectors, wheel speed sensors, abs sensors. To my surprise today I was looking through some videos and found this. Check your variable timing solenoids. I pulled out mine and noticed the plunger one of them looked scorched on the end. Maybe its time to replace. Im gonna order 2 (BTW I have 2010 Infiniti G37x Sedan) and let you know what I get and how it goes when installed. But here's the video I found that made me go check them out in the middle of the night.
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