torque converter failure
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From: jim beam on 26 Jul 2010 01:27 what kind of mileage do others see before a torque converter lockup clutch will start to slip? victim is a 90 honda crx. -- nomina rutrum rutrum
From: Ed Treijs on 26 Jul 2010 19:39 On Jul 26, 1:27 am, jim beam <m...(a)privacy.net> wrote: > what kind of mileage do others see before a torque converter lockup > clutch will start to slip? victim is a 90 honda crx. That's a pretty general question. There may be a lot of dependency on the state of the transmission fluid, and whether the converter is designed to sometimes run in partially-locked mode. My understanding is that Chrysler's ATF+4 was formulated for partial lockup. My '87 K-car's transmission gave no warning before it pretty much stopped shifting gears. The problem was that some converter clutch material had gone into the fluid and all over the place and played havoc with the valve body. I didn't even have any slippage symptoms.when this happened. So you might want to have the transmission worked on right away....at least disable the lockup feature if you need to keep driving the car.
From: jim beam on 26 Jul 2010 20:19 On 07/26/2010 04:39 PM, Ed Treijs wrote: > On Jul 26, 1:27�am, jim beam<m...(a)privacy.net> wrote: >> what kind of mileage do others see before a torque converter lockup >> clutch will start to slip? �victim is a 90 honda crx. > > That's a pretty general question. There may be a lot of dependency on > the state of the transmission fluid, and whether the converter is > designed to sometimes run in partially-locked mode. My understanding > is that Chrysler's ATF+4 was formulated for partial lockup. > > My '87 K-car's transmission gave no warning before it pretty much > stopped shifting gears. The problem was that some converter clutch > material had gone into the fluid and all over the place and played > havoc with the valve body. I didn't even have any slippage > symptoms.when this happened. So you might want to have the > transmission worked on right away....at least disable the lockup > feature if you need to keep driving the car. i guess that's my question - what is supposed to happen. i have two of these things, so compare and contrast is easy. on one, the lockup clutch is starting to slip on hills, the other is not. in all other respects, the car is fine. but i have read about partial lock-up mode - honda calls it "control mode", so i was wondering. transmissions fluids are great, no debris, pink and unburnt, and besides the fact that the other car behaves different, i'm convincing myself that this is a progressive problem that's getting worse. mileage is just under 200k. -- nomina rutrum rutrum
From: Hachiroku ハチロク on 26 Jul 2010 21:09 On Mon, 26 Jul 2010 16:39:38 -0700, Ed Treijs wrote: > On Jul 26, 1:27 am, jim beam <m...(a)privacy.net> wrote: >> what kind of mileage do others see before a torque converter lockup >> clutch will start to slip? victim is a 90 honda crx. > > That's a pretty general question. There may be a lot of dependency on > the state of the transmission fluid, and whether the converter is > designed to sometimes run in partially-locked mode. My understanding > is that Chrysler's ATF+4 was formulated for partial lockup. > > My '87 K-car's transmission gave no warning before it pretty much > stopped shifting gears. The problem was that some converter clutch > material had gone into the fluid and all over the place and played > havoc with the valve body. I didn't even have any slippage > symptoms.when this happened. So you might want to have the > transmission worked on right away....at least disable the lockup > feature if you need to keep driving the car. This can probably be accomplished by either jumpering or cutting a wire to the trans ECU.
From: Garrett Fulton on 27 Jul 2010 00:22
"jim beam" <me(a)privacy.net> wrote in message news:Q6Gdnb-6l9yzu9PRnZ2dnUVZ_tednZ2d(a)speakeasy.net... > On 07/26/2010 04:39 PM, Ed Treijs wrote: >> On Jul 26, 1:27?am, jim beam<m...(a)privacy.net> wrote: >>> what kind of mileage do others see before a torque converter lockup >>> clutch will start to slip? ?victim is a 90 honda crx. >> >> That's a pretty general question. There may be a lot of dependency on >> the state of the transmission fluid, and whether the converter is >> designed to sometimes run in partially-locked mode. My understanding >> is that Chrysler's ATF+4 was formulated for partial lockup. >> >> My '87 K-car's transmission gave no warning before it pretty much >> stopped shifting gears. The problem was that some converter clutch >> material had gone into the fluid and all over the place and played >> havoc with the valve body. I didn't even have any slippage >> symptoms.when this happened. So you might want to have the >> transmission worked on right away....at least disable the lockup >> feature if you need to keep driving the car. > > i guess that's my question - what is supposed to happen. > > i have two of these things, so compare and contrast is easy. on one, the > lockup clutch is starting to slip on hills, the other is not. in all > other respects, the car is fine. but i have read about partial lock-up > mode - honda calls it "control mode", so i was wondering. transmissions > fluids are great, no debris, pink and unburnt, and besides the fact that > the other car behaves different, i'm convincing myself that this is a > progressive problem that's getting worse. mileage is just under 200k. > > -- > nomina rutrum rutrum Had a Ford Aerostar van that had a bad shudder around 60 up a slight grade with the TCC engaged. TCC was starting to slip. I changed the trans. fluid, went away, never came back. Old fluid smelled fresh, no discoloration. Just my .02, but it might be worth a try. Garrett Fulton |