Rattle on initial acceleration
12-12-2018, 02:04 AM
#41
Software update is no good.
I once asked my Acura dealer to fix the "initial acceleration engine rattling" problem on my 4G TL. They told me the pros and cons.
The pro is that software update will fix the immediate rattling problem. But the cons are that (1) I have to pay for the job, and (2) the rattling problem will come back after a few months (according to their customer feedback). I suspect that latter is to do with the more volatile winter gas formula versus the less volatile summer gas formula, that the engine software is not capable to self-adjust to such a wide range of gas volatility.
My rattling problem is definitely engine pinging because it heavily depends on the brand of gasoline that I fill up with. For PetroCanada gas, the engine will ping like crazy, and for Chevron gas, the engine will have minimal pinging in summer and none in winter. But I still haven't been able to find one gas brand in Canada that will have no pinging all year around.
I once asked my Acura dealer to fix the "initial acceleration engine rattling" problem on my 4G TL. They told me the pros and cons.
The pro is that software update will fix the immediate rattling problem. But the cons are that (1) I have to pay for the job, and (2) the rattling problem will come back after a few months (according to their customer feedback). I suspect that latter is to do with the more volatile winter gas formula versus the less volatile summer gas formula, that the engine software is not capable to self-adjust to such a wide range of gas volatility.
My rattling problem is definitely engine pinging because it heavily depends on the brand of gasoline that I fill up with. For PetroCanada gas, the engine will ping like crazy, and for Chevron gas, the engine will have minimal pinging in summer and none in winter. But I still haven't been able to find one gas brand in Canada that will have no pinging all year around.
12-12-2018, 11:26 AM
#42
Here in California, Ive never seen 94 Octane.
Mine sounds like a metallic rattle sound. Ive had this car checked out and misdiagnosed so many times Its practically been rebuilt. From transmission (TWICE!) to engine (ONCE) even Catalytic converter all in an effort to fix this damned rattle out of fear it may pose a greater problem.
The dollar amount put into this car chasing the fix for this now exceeds $12k. I plan to do a Transfer case fluid exchange today and see if that works. Someone posted theirs went away after doing such. Its kills me to love the car so much and HATE It at the same time.
Mine sounds like a metallic rattle sound. Ive had this car checked out and misdiagnosed so many times Its practically been rebuilt. From transmission (TWICE!) to engine (ONCE) even Catalytic converter all in an effort to fix this damned rattle out of fear it may pose a greater problem.
The dollar amount put into this car chasing the fix for this now exceeds $12k. I plan to do a Transfer case fluid exchange today and see if that works. Someone posted theirs went away after doing such. Its kills me to love the car so much and HATE It at the same time.
12-12-2018, 04:34 PM
#43
The inconvenient truth
Software update is no good.
I once asked my Acura dealer to fix the "initial acceleration engine rattling" problem on my 4G TL. They told me the pros and cons.
The pro is that software update will fix the immediate rattling problem. But the cons are that (1) I have to pay for the job, and (2) the rattling problem will come back after a few months (according to their customer feedback). I suspect that latter is to do with the more volatile winter gas formula versus the less volatile summer gas formula, that the engine software is not capable to self-adjust to such a wide range of gas volatility.
My rattling problem is definitely engine pinging because it heavily depends on the brand of gasoline that I fill up with. For PetroCanada gas, the engine will ping like crazy, and for Chevron gas, the engine will have minimal pinging in summer and none in winter. But I still haven't been able to find one gas brand in Canada that will have no pinging all year around.
I once asked my Acura dealer to fix the "initial acceleration engine rattling" problem on my 4G TL. They told me the pros and cons.
The pro is that software update will fix the immediate rattling problem. But the cons are that (1) I have to pay for the job, and (2) the rattling problem will come back after a few months (according to their customer feedback). I suspect that latter is to do with the more volatile winter gas formula versus the less volatile summer gas formula, that the engine software is not capable to self-adjust to such a wide range of gas volatility.
My rattling problem is definitely engine pinging because it heavily depends on the brand of gasoline that I fill up with. For PetroCanada gas, the engine will ping like crazy, and for Chevron gas, the engine will have minimal pinging in summer and none in winter. But I still haven't been able to find one gas brand in Canada that will have no pinging all year around.
12-13-2018, 02:19 PM
#44
I check this thread compulsively in hopes one day I will find the answer. Ive contacted Acura more than 20 times this calendar year pertaining to my car. When I tell you my car has almost been rebuilt,. Most of whats under the hood is BRAND NEW. And yet this rattle remains. SMH
12-13-2018, 02:31 PM
#45
https://acurazine.com/forums/4g-tl-p.../#post16349668
In case anyone has questions about WHAT the ping sounds like , i pulled this from another thread about the same issue on the same model...
(see video)
In case anyone has questions about WHAT the ping sounds like , i pulled this from another thread about the same issue on the same model...
12-13-2018, 10:17 PM
#46
Is it quite the mystery. My car is nowhere near that bad and I’m hoping it doesn’t get to that. I have an 09 and can remember as far as 5 plus years ago when I first starting hearing it. It goes away for long periods of time then comes back. Could definitely be fuel related. The car has gone this far without issue, just an annoyance which I hope is the extent of it. But yes I too would love to know what the heck is causing this one day.
12-21-2018, 10:15 AM
#47
Check this out guys!
https://www.gearboxfactory.co.nz/Ser...Cases+4WD.html
I think someone in here may be on to something. He say he changed his hypoid fluid in the transfer case and the sound went away.
• I have the SH-AWD
• I live in San Francisco (lots of steep hills)
• Sound happens on Acceleration and often during turns.
I am hoping this works. I made appointment with Acura the soonest was THIS saturday afternoon.
I am So excited as this would mean my TL is whole. Ive fixed EVERY rattle ping and chime and this is the last
peeve of having this car. (Falls to knees praying with tears in his eyes) Please Let this work.
LOL
I'll keep you guys posted.
P.S. I finally got Apple Carplay AND android auto in my car.
• Works with Factory Joystick
• STock OEM look. No changing of your factory system
• Plan to post about it soon.
https://www.gearboxfactory.co.nz/Ser...Cases+4WD.html
I think someone in here may be on to something. He say he changed his hypoid fluid in the transfer case and the sound went away.
• I have the SH-AWD
• I live in San Francisco (lots of steep hills)
• Sound happens on Acceleration and often during turns.
I am hoping this works. I made appointment with Acura the soonest was THIS saturday afternoon.
I am So excited as this would mean my TL is whole. Ive fixed EVERY rattle ping and chime and this is the last
peeve of having this car. (Falls to knees praying with tears in his eyes) Please Let this work.
LOL
I'll keep you guys posted.
P.S. I finally got Apple Carplay AND android auto in my car.
• Works with Factory Joystick
• STock OEM look. No changing of your factory system
• Plan to post about it soon.
12-24-2018, 03:42 AM
#48
2G TLX-S
Similarly not all 3.7L-V6 engine consume excessive oil. I am also one of the unfortunate ones that has.
Just a thought. I wonder if engine knocking has any relationship to excessive oil consumption ?
Please everyone chips in.
12-24-2018, 09:40 AM
#49
*My specific Rattle/pinging sound fixed*
This is for those people googling the intermittent rattling noise that most mechanics diagnose as engine pinging or a loose heat shield.
My problem. A rattling noise once the engine was warm, turned off for 10 mins or less and then driven again. Rattle sounds would happen under normal acceleration around 2,000 - 4,000 RPM, and then go away after a short distance. Mechanics guessed it to be bad fuel, a loose heat shield, or a broken transmission / torque converter. I didn't feel any driving issues, it was just noise.
The fix. Drain and fill Hypoid fluid for the SH-AWD transfer case. After that fluid change, I drove around for 40kms in silence with the same fuel, so it was not engine pinging. Its been a bit over 100 kms now and I havent had any noises since the drain and fill.
This is for those people googling the intermittent rattling noise that most mechanics diagnose as engine pinging or a loose heat shield.
My problem. A rattling noise once the engine was warm, turned off for 10 mins or less and then driven again. Rattle sounds would happen under normal acceleration around 2,000 - 4,000 RPM, and then go away after a short distance. Mechanics guessed it to be bad fuel, a loose heat shield, or a broken transmission / torque converter. I didn't feel any driving issues, it was just noise.
The fix. Drain and fill Hypoid fluid for the SH-AWD transfer case. After that fluid change, I drove around for 40kms in silence with the same fuel, so it was not engine pinging. Its been a bit over 100 kms now and I havent had any noises since the drain and fill.
Even after placing my transmission (twice) no one ever mentions transfer case fluid. like, ever.
Anyway, Immediately driving the car after I noticed, more....torque. More...I cant quite explain, but the car drove better. It was like velvet smooth powerful acceleration. More precise. And believe me, I was looking for the sound... the dreaded rattle....
It happened, but it was for a nanosecond.....Then the next drive cycle it did it, but it was 90% audible of what it usually is...very faint. Then, after that. It hasnt happened again.
In a nutshell, After the fluid change, it was there faintly....and within 3 days, its gone. Car hasnt made the sound in three days. I still wanna at least go 30 days without hearing that rattle/knock/ping... We will see..
So for those who have this issue, its worth it. DOnt go getting all kinds of cluids changed, they will try to sell you on it. Just simply put "Transfer case Fluid Exhchange". Also this is not something you want to trust just anyone to do. Acura/Honda tend to be very specific about this particular fluid. Many mechanics turned me away. So I went to Acura. Im glad I did. Im really f*&%! happy right now!
12-24-2018, 11:04 AM
#50
Not all 4G TL has engine knocking. I am one of the unfortunate ones that has.
Similarly not all 3.7L-V6 engine consume excessive oil. I am also one of the unfortunate ones that has.
Just a thought. I wonder if engine knocking has any relationship to excessive oil consumption ?
Please everyone chips in.
Similarly not all 3.7L-V6 engine consume excessive oil. I am also one of the unfortunate ones that has.
Just a thought. I wonder if engine knocking has any relationship to excessive oil consumption ?
Please everyone chips in.
They mentioned that there were "No noted adverse reactions to using 5w30, however the engine runs most efficiently with 5W20". I made the switch it fixed it. I think it depends on how you drive. Im a very spirited, healthy accelerations-take corners,
kinda guy. I like seeing the limits of the car sometimes. And that drving style, seems to make this engine drink oil. So I switched to an oil that allowed for my driving style.
12-24-2018, 05:15 PM
#51
1st Gear
Join Date: Dec 2018
Age: 45
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Thanks for your all inputs!
I have just bought 2010 MDX at 72K and going crazy with that rattling sound as shown on the following video.
https://m.youtube.com/watch?v=W2wn7B...ature=youtu.be
I will try to have the transfer case fluid exchanged ASAP.
I have just realized that you wrote on December 21st, 2018 that transfer case fluid exchanged. I am confused if it was a typo or you’ve revised your entry after changing it a fee days ago.
Happy holidays & new year everyone.
Sal
I have just bought 2010 MDX at 72K and going crazy with that rattling sound as shown on the following video.
https://m.youtube.com/watch?v=W2wn7B...ature=youtu.be
I will try to have the transfer case fluid exchanged ASAP.
I have just realized that you wrote on December 21st, 2018 that transfer case fluid exchanged. I am confused if it was a typo or you’ve revised your entry after changing it a fee days ago.
Happy holidays & new year everyone.
Sal
IT WORKED. For me, so far. I got my hypoid fluid (transfer case fluid exchange ) done at Acura Dealer. They tried to sell me on the tranny and differential, but I had changed those already per maintenance minder.
Even after placing my transmission (twice) no one ever mentions transfer case fluid. like, ever.
Anyway, Immediately driving the car after I noticed, more....torque. More...I cant quite explain, but the car drove better. It was like velvet smooth powerful acceleration. More precise. And believe me, I was looking for the sound... the dreaded rattle....
It happened, but it was for a nanosecond.....Then the next drive cycle it did it, but it was 90% audible of what it usually is...very faint. Then, after that. It hasnt happened again.
In a nutshell, After the fluid change, it was there faintly....and within 3 days, its gone. Car hasnt made the sound in three days. I still wanna at least go 30 days without hearing that rattle/knock/ping... We will see..
So for those who have this issue, its worth it. DOnt go getting all kinds of cluids changed, they will try to sell you on it. Just simply put "Transfer case Fluid Exhchange". Also this is not something you want to trust just anyone to do. Acura/Honda tend to be very specific about this particular fluid. Many mechanics turned me away. So I went to Acura. Im glad I did. Im really f*&%! happy right now!
Even after placing my transmission (twice) no one ever mentions transfer case fluid. like, ever.
Anyway, Immediately driving the car after I noticed, more....torque. More...I cant quite explain, but the car drove better. It was like velvet smooth powerful acceleration. More precise. And believe me, I was looking for the sound... the dreaded rattle....
It happened, but it was for a nanosecond.....Then the next drive cycle it did it, but it was 90% audible of what it usually is...very faint. Then, after that. It hasnt happened again.
In a nutshell, After the fluid change, it was there faintly....and within 3 days, its gone. Car hasnt made the sound in three days. I still wanna at least go 30 days without hearing that rattle/knock/ping... We will see..
So for those who have this issue, its worth it. DOnt go getting all kinds of cluids changed, they will try to sell you on it. Just simply put "Transfer case Fluid Exhchange". Also this is not something you want to trust just anyone to do. Acura/Honda tend to be very specific about this particular fluid. Many mechanics turned me away. So I went to Acura. Im glad I did. Im really f*&%! happy right now!
12-26-2018, 01:51 PM
#52
Thanks for your all inputs!
I have just bought 2010 MDX at 72K and going crazy with that rattling sound as shown on the following video.
https://m.youtube.com/watch?v=W2wn7B...ature=youtu.be
I will try to have the transfer case fluid exchanged ASAP.
I have just realized that you wrote on December 21st, 2018 that transfer case fluid exchanged. I am confused if it was a typo or you’ve revised your entry after changing it a fee days ago.
Happy holidays & new year everyone.
Sal
I have just bought 2010 MDX at 72K and going crazy with that rattling sound as shown on the following video.
https://m.youtube.com/watch?v=W2wn7B...ature=youtu.be
I will try to have the transfer case fluid exchanged ASAP.
I have just realized that you wrote on December 21st, 2018 that transfer case fluid exchanged. I am confused if it was a typo or you’ve revised your entry after changing it a fee days ago.
Happy holidays & new year everyone.
Sal
And not so good news.... it happened again this morning...FAINT and for a nanosecond. But it happened.
it used to last for a few seconds....But now its just like a blip.
It may continue to improve after more driving, but There is a remarkable difference in how often it happens
and the intensity at which it happens.
12-30-2018, 09:05 PM
#53
Three Wheelin'
Not all 4G TL has engine knocking. I am one of the unfortunate ones that has.
Similarly not all 3.7L-V6 engine consume excessive oil. I am also one of the unfortunate ones that has.
Just a thought. I wonder if engine knocking has any relationship to excessive oil consumption ?
Please everyone chips in.
Similarly not all 3.7L-V6 engine consume excessive oil. I am also one of the unfortunate ones that has.
Just a thought. I wonder if engine knocking has any relationship to excessive oil consumption ?
Please everyone chips in.
12-31-2018, 08:40 AM
#54
Instructor
My 2012 6MT has started to occasionally give a soft rattle on cold starts in first gear, and it goes away. First heard it when I put regular gas in the car. (I nearly always have used premium but couldn't resist a bargain.) Putting premium in on the next fill up hasn't completely killed off the noise, which is not always reproduced. I am going to run some techron in the car.
12-31-2018, 10:07 AM
#55
I also think a rare stall issue i have when in steep inclines may be related as well. Because just as the car stalls out that gargle piing rattle sound happens. SO frustrating.
The car runs Smooth. But that damdned sound. I cant believe no one has found a solution yet. Its all over youtube..Thousands of us have it.
The car runs Smooth. But that damdned sound. I cant believe no one has found a solution yet. Its all over youtube..Thousands of us have it.
01-06-2019, 05:34 AM
#57
2G TLX-S
If the problem is engine pinging at initial acceleration when engine is warm,
Permanent solution : NO
Temporary solution : YES
Read my post #40 above.
Permanent solution : NO
Temporary solution : YES
Read my post #40 above.
01-06-2019, 02:19 PM
#58
Just throwing this out there. I have no evidence to support this other than my own experience. I have always used 94 Octane and occasionally I would hear a slight ping.
I have not heard it back since the car was Tuned with the K Tuner. Not sure if this is a solution albeit a fairly expensive one to gamble with.
I have not heard it back since the car was Tuned with the K Tuner. Not sure if this is a solution albeit a fairly expensive one to gamble with.
01-11-2019, 01:53 AM
#59
Following. Got that rattling sound. Had the knock sensor changed. Currently at 175,000km Montreal Canada
Will go to acura soon to change the transfer case fluid and update
Will go to acura soon to change the transfer case fluid and update
01-11-2019, 10:10 AM
#60
UPDATE:
After Transfer case fluid exchange Just before Christmas 2018, over a few days the noise changed, faded and has now seemingly stopped. The last time I heard the noise was on Jan 4, 2018. I haven't heard it since.
I will continue to update Once a week for 4 more weeks.
After Transfer case fluid exchange Just before Christmas 2018, over a few days the noise changed, faded and has now seemingly stopped. The last time I heard the noise was on Jan 4, 2018. I haven't heard it since.
I will continue to update Once a week for 4 more weeks.
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Nev05 (01-11-2019)
01-11-2019, 03:40 PM
#61
Instructor
UPDATE:
After Transfer case fluid exchange Just before Christmas 2018, over a few days the noise changed, faded and has now seemingly stopped. The last time I heard the noise was on Jan 4, 2018. I haven't heard it since.
I will continue to update Once a week for 4 more weeks.
After Transfer case fluid exchange Just before Christmas 2018, over a few days the noise changed, faded and has now seemingly stopped. The last time I heard the noise was on Jan 4, 2018. I haven't heard it since.
I will continue to update Once a week for 4 more weeks.
01-11-2019, 03:46 PM
#62
Thank you! I have also been noticing the rattle on my '12 TL 6MT on acceleration. Mostly after shifting to 2nd. I always been using 91 octane gas so I know its not that. I been following this thread for the past month to see if theres a fix for this and if a transfer case fluid change is all I need, then I'm happy. This fluid change was next on my list anyway. Please keep us posted !
I also will start using seafoam regularly in my Fuel. I have used it in the past to safeguard against fuel irregularities.
01-17-2019, 12:26 PM
#63
Confirming Week 2 of ZERO rattle after Doing TRANSFER CASE FLUID EXCHANGE. Changing this fluid again also changed the overall feel of the car for the better.
I don't want to get too excited yet because it hasn't quite been a month. Again I want to test for a full 30 days and also varying Gas brands to ensure its NOT fuel related as well.
But it feels good to pull away after leaving a store and not be embarrassed that my car gargles metal bolts LOL. Go get your Transfer Case fluids Exchanges folks... Give it a couple weeks and you too
can be rattle on initial acceleration free. Im like still skeptical even though it hasn't done it in 3 weeks! I feel like If we all try it (with our varying driving styles and fuels use) we can discover and share the fix.
I don't want to get too excited yet because it hasn't quite been a month. Again I want to test for a full 30 days and also varying Gas brands to ensure its NOT fuel related as well.
But it feels good to pull away after leaving a store and not be embarrassed that my car gargles metal bolts LOL. Go get your Transfer Case fluids Exchanges folks... Give it a couple weeks and you too
can be rattle on initial acceleration free. Im like still skeptical even though it hasn't done it in 3 weeks! I feel like If we all try it (with our varying driving styles and fuels use) we can discover and share the fix.
01-17-2019, 12:27 PM
#64
*My specific Rattle/pinging sound fixed*
This is for those people googling the intermittent rattling noise that most mechanics diagnose as engine pinging or a loose heat shield.
My problem. A rattling noise once the engine was warm, turned off for 10 mins or less and then driven again. Rattle sounds would happen under normal acceleration around 2,000 - 4,000 RPM, and then go away after a short distance. Mechanics guessed it to be bad fuel, a loose heat shield, or a broken transmission / torque converter. I didn't feel any driving issues, it was just noise.
The fix. Drain and fill Hypoid fluid for the SH-AWD transfer case. After that fluid change, I drove around for 40kms in silence with the same fuel, so it was not engine pinging. Its been a bit over 100 kms now and I havent had any noises since the drain and fill.
This is for those people googling the intermittent rattling noise that most mechanics diagnose as engine pinging or a loose heat shield.
My problem. A rattling noise once the engine was warm, turned off for 10 mins or less and then driven again. Rattle sounds would happen under normal acceleration around 2,000 - 4,000 RPM, and then go away after a short distance. Mechanics guessed it to be bad fuel, a loose heat shield, or a broken transmission / torque converter. I didn't feel any driving issues, it was just noise.
The fix. Drain and fill Hypoid fluid for the SH-AWD transfer case. After that fluid change, I drove around for 40kms in silence with the same fuel, so it was not engine pinging. Its been a bit over 100 kms now and I havent had any noises since the drain and fill.
01-17-2019, 03:38 PM
#65
Unfortunately my rattle is still around. I replaced the front transfer case fluid about 2000 miles ago. It did seem to help for a couple of weeks. Hopefully it solves the problem for the rest of you guys, but no luck here. I'm not 100% convinced it's related since the noise has always come and gone.
01-20-2019, 03:33 AM
#66
Unfortunately my rattle is still around. I replaced the front transfer case fluid about 2000 miles ago. It did seem to help for a couple of weeks. Hopefully it solves the problem for the rest of you guys, but no luck here. I'm not 100% convinced it's related since the noise has always come and gone.
I am trying to help figure how to get you there.
01-23-2019, 11:14 PM
#67
I am almost positive it is fuel related. Which would explain how the sound can come and go for short or long periods of time. Sooner or later you will run into some bad gas in your tank. Inevitable. I always use 91 v power. I’ve done two changes of transfer fluid over the years and the sound will still come and go. Thankfully it happens rarely on my car.
01-28-2019, 11:42 AM
#68
Hey everyone!
This only happens once the car is good and warmed up, during initial acceleration (stop sign, red light, going slow then hitting gas) there is a rattle that comes from the car for a second then stops after the car gets moving.
Best description I can think of is how a diesel truck sounds, very similar. Anyone else ever experience this? This is my first Acura so I'm not too sure
My car is a 2012 sh-awd with 47k km, any help is appreciated!
This only happens once the car is good and warmed up, during initial acceleration (stop sign, red light, going slow then hitting gas) there is a rattle that comes from the car for a second then stops after the car gets moving.
Best description I can think of is how a diesel truck sounds, very similar. Anyone else ever experience this? This is my first Acura so I'm not too sure
My car is a 2012 sh-awd with 47k km, any help is appreciated!
01-28-2019, 11:43 AM
#69
I am almost positive it is fuel related. Which would explain how the sound can come and go for short or long periods of time. Sooner or later you will run into some bad gas in your tank. Inevitable. I always use 91 v power. I’ve done two changes of transfer fluid over the years and the sound will still come and go. Thankfully it happens rarely on my car.
01-28-2019, 01:32 PM
#70
I went to change de transfer case fluid. And since then, like others said, no rattle anymore. Im hap’y about it. Will wait a bit to be 100% happy. Thanks for that 100$ rattle cancel 👍🏼👍🏼👍🏼
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mrphilipanderson (02-04-2019)
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