Transmission slipping?

Tiny
TMPHARR
  • MEMBER
  • 2005 HONDA ACCORD
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
Noticed today (for the first time) with my 2005 Honda Accord - 90000 miles that when I was going uphill, the rpm climbed to 3500 and when in went downhill at the same speed, rpm jumped more than 1000rpm. Trans and oil fluids okay. Maintenance required light on for a few thousand miles and havent taken it in (sorry being honest). No other indicator lights. Feels like the car wants to go idle at lower speeds. Please help! Thank you.
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Sunday, June 20th, 2010 AT 9:25 PM

65 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Hi there,

This will have to be checked over first hand, to many possibilities to second guess this problem, do this asap as the further you drive it the more damage you may be doing.

This guide can help fix it

https://www.2carpros.com/articles/automatic-transmission-problems

mark (mhpautos)
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Sunday, June 20th, 2010 AT 11:01 PM
Tiny
NAVYDOC8425
  • MEMBER
  • 1 POST
  • 2003 HONDA ACCORD
  • 16,000 MILES
My car has brown colored coolant, and having transmission slipping. Transmission was very low on fluid. Replaced fluid. Flushed out cooling system. Car drove very well for about seventy miles. No transmission slipping. Then started slipping again. Looked into engine compartment and more brown being forced out of the coolant reservoir and transmission was very low on fluid again.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
The transmission cooler runs through the radiator. There must be an internal leak there. This needs to be repaired ASAP because it will take out the transmission.

Check that for me. If I am correct, the radiator will need replaced.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
This model does not have hoses to the radiator. There is a cooler/warmer that is attached to top of transmission. That unit should be faulty and requires replacement.
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+7
Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
NOELNOCHIM
  • MEMBER
  • 1 POST
I am having the same problem with ATF tan sludge in coolant. The coolant hoses were all replaced and the system holds pressure. The car holds temperature for a while then overheats and spews tan colored fluid to the reservoir. I think that the ATF pressure is much higher than the coolant pressure (13 psi -ish) so the ATF leaks into the cooling system. Do you know if there is a history of leaks in the ATF warmer? There are a couple of "o"rings between the warmer case and the mounting to the transmission and ATF could leak into the coolant there. Whatever is causing the leak, the problem does not appear until some miles are put on the car. The last occurrence occurred six miles after the engine first came up to temperature and the thermostat opened. Thanks for taking the time to respond. Noel Nochim
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Hey Noel,

I would bypass the warmer/cooler and drive the car for a short time to see if transmission fluid is leaking from the warmer/cooler. Use a short piece of tube as the splice.

Please run this test and get back to us so we can continue helping you.

Best, Ken
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
DATIS
  • MEMBER
  • 2 POSTS
  • 2003 HONDA ACCORD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 92,000 MILES
I was driving onto a bridge when my Tranny started slipping - it'd kick into neutral while I was in drive. I was in a bad portion of hte bridge so I threw on my hazzards and tried moving again, after turning on my car it went back into gear but still acted up a bit. As I tried making my return it did it a second time and fixed when I turned my car off and back on.

I maintained a 30-40 mile pace and it was driving well until midway back it stopped on the middle of the bridge. I kicked my hazzards on tried starting and restarting again but it wouldn't pick up the gear.

My tsc and engine light turned on. I got towed and went home. It was too late to check fluid levels and I had to work early this morning.

Should I be looking to save upwards of $1000-$2000. I know you can't give me an accurate diagnosis, but based on what I've said if you have any idea please let me know.

Thanks ahead of time to anyone who can give some input.

Cheers
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
SIHOTA
  • MEMBER
  • 1 POST
Hey Noel,

Did replacing the ATF warmer solve the problem or how did you go about fixing it? Hope to hear back, thanks
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi datis,

Check the trans fluid level first.

Get a scan done to retrieve the trouble code and let me know what it is.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Hello,

I am sure it did. it is the only thing that can allow transmission fluid into the radiator. Here is a guide to help you see what you are in for when changing the radiator out:

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
DATIS
  • MEMBER
  • 2 POSTS
My dad checked the level while I was at work and said it was low but had a fair bit in it.

Will be taking the car to the shop soon to see the code.

Thanks again.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
DILL-11
  • MEMBER
  • 119 POSTS
  • 2003 HONDA ACCORD
  • 3.0L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 190,000 MILES
I put a used transmission in a 2003 Honda accord 3.0. First and second change fine but third slips before it change. What could cause this? Also I have three set of sensors that are black and brown they all wiil put up to each other could they be crossed?
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it slips going into a gear either the seals are bad in that clutch pak or the clutch pak itself. The solenoids could be the same but it depends on the connectors. They all have different colored wires going to them though so it can shift properly. However those are probably not your cause.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Orgot to add, a trans guy shold check this out however for a proper diagnosis
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
DILL-11
  • MEMBER
  • 119 POSTS
How do I check the fluid in park running or not? When I check it in park it seams to have fluid still in the dip stick tube. Cloud it be to full. The manual say check hot engine off never heard of that.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check it the way the manual says but I kind think it sounds like there is to much fluid in it. Normally that gets blown out the vent though.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
DILL-11
  • MEMBER
  • 119 POSTS
Well I had drove it. Shouldn't it came out then if it was over full?
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If it got warm enough yes if you only drove less than 10 miles then it wouldn't have. You migh thave had to drive it further. I can't find any info on how to check it. Ok I did find the way to check it. You have to shut engine off and check fluid within 60-90 seconds of shutting engine off. Also you have to heat trans until the cooling fan comes on.
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Tuesday, July 7th, 2020 AT 2:17 PM (Merged)
Tiny
AMYBELLA
  • MEMBER
  • 4 POSTS
  • 2002 HONDA ACCORD
  • 95,000 MILES
My 2002 Accord(V-6/V-Tec)with auto tranny and 95,000 miles runs great except for the occasional 'jerking' or 'slipping' that feels like the transmission.

It becomes more noticeable when accelerating somewhere between 0 to 15mph and even more if accelerating up a driveway or small hill! Also, during 'stop and go' traffic, I am sometimes able to take of quickly without a problem. But then other times it seems like I press the pedal about a half second before the RPM's increase.

I really hope that these are not early signs of a major tranny disaster.
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Tuesday, July 7th, 2020 AT 2:18 PM (Merged)
Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
Get the trouble codes pulled. Any Advance Auto or Auto Zone will do this for free.
If no codes come up, you either have a torque converter or a clutch pack problem.
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Tuesday, July 7th, 2020 AT 2:18 PM (Merged)

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