Anyone familiar with Honda automatic transmissions?

adamv7010

Well-Known Member
Joined
Jan 21, 2012
Location
Mount Olive, Nc
A family member recently bought an 06 accord ...v6 with an auto.

Car has 116k miles.

I noticed today there's a shudder in the trans, usually when shifting into 2nd at a normal acceleration rate.

I know nothing about Hondas/acuras to speak of, but am very proficient in diesels so I'm not completely illiterate when it comes to a vehicle.

Are there any common issues with this unit? Is this a common symptom of another issue? Any help would be greatly appreciated.




sent while driving recklessly
 
Paging transman.... I know there is one honda trans that the case wears out on and makes them shift funny.... Lee will know
 
snappy said:
Paging transman.... I know there is one honda trans that the case wears out on and makes them shift funny.... Lee will know
Click to expand...
Thank you. Maybe he'll chime in here.

I will add that its a significant shudder...it will cease if you back off of the throttle when it starts.

It doesn't always do it going into 2nd but that is where it primarily happens.



sent while driving recklessly
 
sorry, i just saw this.

put a scanner on it and check the trans for codes. some trans codes will not set a check engine light.
if it has any pressure switch codes that will be your problem.
if it has no codes in the trans, then you have gotten the honda converter blues.
i will not go into my honda transmission doctrine, just know that if it has no codes it will be needing an overhaul.

also make sure it has no egr codes, egr codes can cause a similar condition.
 
transman731 said:
sorry, i just saw this.

put a scanner on it and check the trans for codes. some trans codes will not set a check engine light.
if it has any pressure switch codes that will be your problem.
if it has no codes in the trans, then you have gotten the honda converter blues.
i will not go into my honda transmission doctrine, just know that if it has no codes it will be needing an overhaul.

also make sure it has no egr codes, egr codes can cause a similar condition.
Click to expand...

If its torque converter chatter couldn't he just do a tranny flush?
 
pgaloustian said:
If its torque converter chatter couldn't he just do a tranny flush?
Click to expand...

no, i guarantee that will not fix it, and flushing a transmission is a sin (in my professional opinion), servicing on the other hand is ok but will not fix his trans issue.
anyone else who owns a honda, if you ever flush your transmission you are screwed.
 
transman731 said:
no, i guarantee that will not fix it, and flushing a transmission is a sin (in my professional opinion), servicing on the other hand is ok but will not fix his trans issue.
anyone else who owns a honda, if you ever flush your transmission you are screwed.
Click to expand...


just curious why, i know they rec a drain and fill from dealer, but the BG machine runs off of trans pump pressure and basically just transfuses new fluid in
 
ok, here we go, i will start by saying that if you go to 100 transmission shops, 50% will agree with me.
atf is basically hydraulic fluid with detergents and dye.
any particulate matter in the fluid (from wear), sticks to the inside of the drums centrifugally.
when you service the trans (drop pan, drain and fill ect.) you remove a portion of the fluid. when you add new fluid back to it, you are diluting the new fluid with the fluid that remained in the trans and converter. an example, on a honda, dry, it holds between 8-10 qts, a drain and fill with have you add 3-4qts back to the trans to get it full again.(approx. 1/3 of total)
when you do a flush, you are removing all of the fluid, and replacing it with all new fluid. all of the new fluid contains a large amount of detergent,which was fine when the trans was new. since the trans has wear, all the particulate matter that has been spun to the inside of the parts is now getting washed away and "fluid bound", so it's now getting circulated back through your trans. this doesn't happen on a roadtest, it happens over time, so the customer drives away feeling confident he has done the right thing. 2 months later he shows up at my shop with a transmission problem. all the crap has been collected in the filter and sucked the filter shut and starved the trans of fluid, not to mention run through all of your bearings and bushings, and don't forget playing hell on the valve body.
in the case of a honda, the filter is internal (sump) , the valve body has 2 dime sized filters, and there are 12 tubes(smaller diameter than a pencil) that contain filters in the end of them. honda uses clutches that are "fuzzy" when they start to breakdown, they can clog the filters under normal conditions, flushing them really screws them up.
 
thanks for the reply, we were told not to do it, i was just unsure exactly why. i have seen cars not move after a flush and was told that friction material was in the fluid but that was on old domestic stuff, so kinda the same deal i guess
 
transman731 said:
ok, here we go, i will start by saying that if you go to 100 transmission shops, 50% will agree with me.
atf is basically hydraulic fluid with detergents and dye.
any particulate matter in the fluid (from wear), sticks to the inside of the drums centrifugally.
when you service the trans (drop pan, drain and fill ect.) you remove a portion of the fluid. when you add new fluid back to it, you are diluting the new fluid with the fluid that remained in the trans and converter. an example, on a honda, dry, it holds between 8-10 qts, a drain and fill with have you add 3-4qts back to the trans to get it full again.(approx. 1/3 of total)
when you do a flush, you are removing all of the fluid, and replacing it with all new fluid. all of the new fluid contains a large amount of detergent,which was fine when the trans was new. since the trans has wear, all the particulate matter that has been spun to the inside of the parts is now getting washed away and "fluid bound", so it's now getting circulated back through your trans. this doesn't happen on a roadtest, it happens over time, so the customer drives away feeling confident he has done the right thing. 2 months later he shows up at my shop with a transmission problem. all the crap has been collected in the filter and sucked the filter shut and starved the trans of fluid, not to mention run through all of your bearings and bushings, and don't forget playing hell on the valve body.
in the case of a honda, the filter is internal (sump) , the valve body has 2 dime sized filters, and there are 12 tubes(smaller diameter than a pencil) that contain filters in the end of them. honda uses clutches that are "fuzzy" when they start to breakdown, they can clog the filters under normal conditions, flushing them really screws them up.
Click to expand...


Thanks for the knowledge but now I feel like shit cause I have a similar condition in my Acura tl :(
 
pgaloustian said:
Thanks for the knowledge but now I feel like shit cause I have a similar condition in my Acura tl :(
Click to expand...

hate to break it to you but acuras are worse. they don't run a conventional cooler (through the radiator) they run whats called a cooler/warmer that mounts directly on the trans. when i rebuild them i have to buy an adapter plate that mounts to the trans and run an external cooler. (all my honda/acura units get external coolers)
 
transman731 said:
hate to break it to you but acuras are worse. they don't run a conventional cooler (through the radiator) they run whats called a cooler/warmer that mounts directly on the trans. when i rebuild them i have to buy an adapter plate that mounts to the trans and run an external cooler. (all my honda/acura units get external coolers)
Click to expand...

No wonder my grandpa was so quick to offer me his car when my truck blew up
 
SO what SHOULD one do to service a honda trans as routine service at about 110K or so when the timing belt is do.
 
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