How to diagnose a bad torque converter
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How to diagnose a bad torque converter
I just bought a 2013 Infiniti G 37x auto with 50,000 km on it 3 months ago. All maintenance up-to-date with synthetic oil's. No accidents and use only 94 octane.
i've been having excessive vibrations when stopped in drive, gear or reverse. It goes away mostly when you put it into neutral or park but can still feel it slightly. Now I always put it in neutral coasting to a stop.
I took it to the dealer, they denied any problem even when they pulled an error code u1024 Variable valve lift concern.
they cant fix it because they couldn't replicate the problem.
i've exhausted all my leeds, cleaned maf, throttle bodies, Performed idle relearn, adjusted Idle, check motor mounts, check driveshafts,updated computer.
So now I'm ready to see if it's the torque converter or the camshafts.
is there anyway to diagnose these two without taking the whole car apart?
Also could this be a computer/electrical problem which the dealer said could be.
i'm so sick of these vibrations and will do anything to get this fixed, please help!
i've been having excessive vibrations when stopped in drive, gear or reverse. It goes away mostly when you put it into neutral or park but can still feel it slightly. Now I always put it in neutral coasting to a stop.
I took it to the dealer, they denied any problem even when they pulled an error code u1024 Variable valve lift concern.
they cant fix it because they couldn't replicate the problem.
i've exhausted all my leeds, cleaned maf, throttle bodies, Performed idle relearn, adjusted Idle, check motor mounts, check driveshafts,updated computer.
So now I'm ready to see if it's the torque converter or the camshafts.
is there anyway to diagnose these two without taking the whole car apart?
Also could this be a computer/electrical problem which the dealer said could be.
i'm so sick of these vibrations and will do anything to get this fixed, please help!
Last edited by G37xsnewguy; Oct 25, 2017 at 12:13 AM. Reason: Didn't add transmission
Not a Tq converter. That's slippage of the transmission to the flexplate. The error code is a communication error between the VVEL module and the ECU/TCM. That's definitely causing your rough idle. It's mentioned a couple times on the 370z forum but mostly applies to boosted applications. Try new plugs and make sure the gaps are correct .
Any possibility you've tuned the car?
Similar thread for the G37 :https://www.myg37.com/forums/g37-cou...r-problem.html
Have the dealer re-flash. If that doesn't work, you need new relays. Dealer incompetence at its finest.
Any possibility you've tuned the car?
Similar thread for the G37 :https://www.myg37.com/forums/g37-cou...r-problem.html
Have the dealer re-flash. If that doesn't work, you need new relays. Dealer incompetence at its finest.
Last edited by RMB5190; Oct 25, 2017 at 08:42 AM.
Thread Starter
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Joined: Oct 2017
Posts: 44
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Not a Tq converter. That's slippage of the transmission to the flexplate. The error code is a communication error between the VVEL module and the ECU/TCM. That's definitely causing your rough idle. It's mentioned a couple times on the 370z forum but mostly applies to boosted applications. Try new plugs and make sure the gaps are correct .
Any possibility you've tuned the car?
Similar thread for the G37 :https://www.myg37.com/forums/g37-cou...r-problem.html
Have the dealer re-flash. If that doesn't work, you need new relays. Dealer incompetence at its finest.
Any possibility you've tuned the car?
Similar thread for the G37 :https://www.myg37.com/forums/g37-cou...r-problem.html
Have the dealer re-flash. If that doesn't work, you need new relays. Dealer incompetence at its finest.
With the error code, there was no cel light and error code was stored.
So my question is, wouldn't this code come back on if it was the problem? The dealer tec said it would come back on if it were an issue.
I just don't want to spend major $ and not fix the problem. He says the new computer is 1000$.
I don't blame you there. Start cheap and eliminate possibilities with simple solutions. Plugs and new fuses would be my first go to; followed by a new battery if the other one is climbing in age.
Whether the code comes back on or not, you're still feeling symptoms of a failing communication between the VVEL module and the TCM/ECU. I'd say it's still an issue. Does it not happen every time you drive the car? 20%, 50%, etc. We have some vendors here who will sell you the part at a discount with a code from their online store - OEM part. You'd have to find a Infiniti/Nissan mechanic who is capable of doing the install. Might save you some cash if you have to go the most expensive route.
Whether the code comes back on or not, you're still feeling symptoms of a failing communication between the VVEL module and the TCM/ECU. I'd say it's still an issue. Does it not happen every time you drive the car? 20%, 50%, etc. We have some vendors here who will sell you the part at a discount with a code from their online store - OEM part. You'd have to find a Infiniti/Nissan mechanic who is capable of doing the install. Might save you some cash if you have to go the most expensive route.
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I don't blame you there. Start cheap and eliminate possibilities with simple solutions. Plugs and new fuses would be my first go to; followed by a new battery if the other one is climbing in age.
Whether the code comes back on or not, you're still feeling symptoms of a failing communication between the VVEL module and the TCM/ECU. I'd say it's still an issue. Does it not happen every time you drive the car? 20%, 50%, etc. We have some vendors here who will sell you the part at a discount with a code from their online store - OEM part. You'd have to find a Infiniti/Nissan mechanic who is capable of doing the install. Might save you some cash if you have to go the most expensive route.
Whether the code comes back on or not, you're still feeling symptoms of a failing communication between the VVEL module and the TCM/ECU. I'd say it's still an issue. Does it not happen every time you drive the car? 20%, 50%, etc. We have some vendors here who will sell you the part at a discount with a code from their online store - OEM part. You'd have to find a Infiniti/Nissan mechanic who is capable of doing the install. Might save you some cash if you have to go the most expensive route.
The head mechanic told me there was nothing wrong with my car. I believe that was a lie. They should know.
They called me back and booked an apt for diagnosis in three weeks. The funny thing is no one seems to know but me lol!
Iv been trying to deal wihh this problem for 2 months!
I just found out today so will call them up on Monday. Any advice you can give me?
Thanks
That's a communication error between the ECU and TCM. Another member is currently dealing with it and it has developed into a $2,500.00+ repair....
I'd get a record of you showing them the issue and them being ignorant and ignoring the problem. You brought it to them with an issue, presented the code, they swore your car was fine; despite said code. That way, when the thing goes and the car is no longer operational, you'll have some evidence of negligence on their part. I'd even go as far as having them sign a print out showing the code is being ignored and they're saying you're "ok and nothing is wrong". Are you under warranty by chance?
Here's the other thread with the other member:
https://www.myg37.com/forums/g37-sed...s-2-700-a.html
I'd get a record of you showing them the issue and them being ignorant and ignoring the problem. You brought it to them with an issue, presented the code, they swore your car was fine; despite said code. That way, when the thing goes and the car is no longer operational, you'll have some evidence of negligence on their part. I'd even go as far as having them sign a print out showing the code is being ignored and they're saying you're "ok and nothing is wrong". Are you under warranty by chance?
Here's the other thread with the other member:
https://www.myg37.com/forums/g37-sed...s-2-700-a.html
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That's a communication error between the ECU and TCM. Another member is currently dealing with it and it has developed into a $2,500.00+ repair....
I'd get a record of you showing them the issue and them being ignorant ignoring the problem. You brought it to them with an
issue, presented the code, they swore your car was fine; despite said code. That way, when the thing goes and the car is no longer operational, you'll have some evidence of negligence on their part. I'd even go as far as having them sign a print out showing the code is being ignored and they're saying you're "ok and nothing is wrong". Are you under warranty by chance?
Here's the other thread with the other member:
https://www.myg37.com/forums/g37-sed...s-2-700-a.html
I'd get a record of you showing them the issue and them being ignorant ignoring the problem. You brought it to them with an
issue, presented the code, they swore your car was fine; despite said code. That way, when the thing goes and the car is no longer operational, you'll have some evidence of negligence on their part. I'd even go as far as having them sign a print out showing the code is being ignored and they're saying you're "ok and nothing is wrong". Are you under warranty by chance?
Here's the other thread with the other member:
https://www.myg37.com/forums/g37-sed...s-2-700-a.html
I did ask him to take it in for a proper diagnosis ASAP. And they could order things first. just afraid to get up take another nonth or two.
I don't think they will be denying the problem anymore.
I did make up a complaint with with infinit so they can document it.
I do still have a powertrain warranty covers for another year and a half and 100,000 K I
To be continued.......
thanks for the advice!
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No problem man. More often than not, there's less than qualified individuals employed to wrench at the dealerships. Some take their jobs with a lot of pride, but for most, they are lack luster to say the least.
At least you now know what the issue is and can tell if they are BSing you or not taking the issue seriously or doing everything that needs to be done. Sometimes, it's as simple as a fuse swap, or new plugs but in a worst case scenario, they're going to have to crack open the transmission to replace the module. Hope everything works out in your favor.
At least you now know what the issue is and can tell if they are BSing you or not taking the issue seriously or doing everything that needs to be done. Sometimes, it's as simple as a fuse swap, or new plugs but in a worst case scenario, they're going to have to crack open the transmission to replace the module. Hope everything works out in your favor.
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No problem man. More often than not, there's less than qualified individuals employed to wrench at the dealerships. Some take their jobs with a lot of pride, but for most, they are lack luster to say the least.
At least you now know what the issue is and can tell if they are BSing you or not taking the issue seriously or doing everything that needs to be done. Sometimes, it's as simple as a fuse swap, or new plugs but in a worst case scenario, they're going to have to crack open the transmission to replace the module. Hope everything works out in your favor.
At least you now know what the issue is and can tell if they are BSing you or not taking the issue seriously or doing everything that needs to be done. Sometimes, it's as simple as a fuse swap, or new plugs but in a worst case scenario, they're going to have to crack open the transmission to replace the module. Hope everything works out in your favor.
let's just hope this fixes it and the code goes away. They say if the code doesn't go away then they're going to have to start replacing the ECm and TCM. This Will be the seventh time in the shop in the last three months.
thank gold this car is still under warranty.
Fingers crossed!
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I just bought a 2013 Infiniti G 37x auto with 50,000 km on it 3 months ago. All maintenance up-to-date with synthetic oil's. No accidents and use only 94 octane.
i've been having excessive vibrations when stopped in drive, gear or reverse. It goes away mostly when you put it into neutral or park but can still feel it slightly. Now I always put it in neutral coasting to a stop.
I took it to the dealer, they denied any problem even when they pulled an error code u1024 Variable valve lift concern.
they cant fix it because they couldn't replicate the problem.
i've exhausted all my leeds, cleaned maf, throttle bodies, Performed idle relearn, adjusted Idle, check motor mounts, check driveshafts,updated computer.
So now I'm ready to see if it's the torque converter or the camshafts.
is there anyway to diagnose these two without taking the whole car apart?
Also could this be a computer/electrical problem which the dealer said could be.
i'm so sick of these vibrations and will do anything to get this fixed, please help!
i've been having excessive vibrations when stopped in drive, gear or reverse. It goes away mostly when you put it into neutral or park but can still feel it slightly. Now I always put it in neutral coasting to a stop.
I took it to the dealer, they denied any problem even when they pulled an error code u1024 Variable valve lift concern.
they cant fix it because they couldn't replicate the problem.
i've exhausted all my leeds, cleaned maf, throttle bodies, Performed idle relearn, adjusted Idle, check motor mounts, check driveshafts,updated computer.
So now I'm ready to see if it's the torque converter or the camshafts.
is there anyway to diagnose these two without taking the whole car apart?
Also could this be a computer/electrical problem which the dealer said could be.
i'm so sick of these vibrations and will do anything to get this fixed, please help!
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Interesting. So I had originally thought that a U1024 error indicates that a CAN bus communication error involving the Variable Valve Lift and Timing (VVEL) module, often caused by flashing the ECU or a weak battery/ground connection.
It's discussed in detail here with an explanation @MotorvateDIY provides: https://www.reddit.com/r/G37/comment..._the_***_****/
Wonder how replacing the transfer case resolved the issue?
It's discussed in detail here with an explanation @MotorvateDIY provides: https://www.reddit.com/r/G37/comment..._the_***_****/
Wonder how replacing the transfer case resolved the issue?
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I just bought a 2013 Infiniti G 37x auto with 50,000 km on it 3 months ago. All maintenance up-to-date with synthetic oil's. No accidents and use only 94 octane.
i've been having excessive vibrations when stopped in drive, gear or reverse. It goes away mostly when you put it into neutral or park but can still feel it slightly. Now I always put it in neutral coasting to a stop.
I took it to the dealer, they denied any problem even when they pulled an error code u1024 Variable valve lift concern.
they cant fix it because they couldn't replicate the problem.
i've exhausted all my leeds, cleaned maf, throttle bodies, Performed idle relearn, adjusted Idle, check motor mounts, check driveshafts,updated computer.
So now I'm ready to see if it's the torque converter or the camshafts.
is there anyway to diagnose these two without taking the whole car apart?
Also could this be a computer/electrical problem which the dealer said could be.
i'm so sick of these vibrations and will do anything to get this fixed, please help!
Consult 3 Plus is a powerful tool for diagnostics and programming, especially when it comes to advanced features in vehicles like the G37. It's always great to have the right software to ensure everything is functioning as it should. For those managing multiple vehicle systems or dealing with complex modifications, platforms like best document scanning app 2025 https://scanner.biz/reviews/best-free-scanner-apps/ can help you keep track of your diagnostic tools, store logs, and monitor the performance of your car's software to ensure everything runs smoothly.
i've been having excessive vibrations when stopped in drive, gear or reverse. It goes away mostly when you put it into neutral or park but can still feel it slightly. Now I always put it in neutral coasting to a stop.
I took it to the dealer, they denied any problem even when they pulled an error code u1024 Variable valve lift concern.
they cant fix it because they couldn't replicate the problem.
i've exhausted all my leeds, cleaned maf, throttle bodies, Performed idle relearn, adjusted Idle, check motor mounts, check driveshafts,updated computer.
So now I'm ready to see if it's the torque converter or the camshafts.
is there anyway to diagnose these two without taking the whole car apart?
Also could this be a computer/electrical problem which the dealer said could be.
i'm so sick of these vibrations and will do anything to get this fixed, please help!
Consult 3 Plus is a powerful tool for diagnostics and programming, especially when it comes to advanced features in vehicles like the G37. It's always great to have the right software to ensure everything is functioning as it should. For those managing multiple vehicle systems or dealing with complex modifications, platforms like best document scanning app 2025 https://scanner.biz/reviews/best-free-scanner-apps/ can help you keep track of your diagnostic tools, store logs, and monitor the performance of your car's software to ensure everything runs smoothly.
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