Tranny slip?
09-03-2008, 09:20 AM
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Tranny slip? So while rolling slowly uphill in traffic. 10 - 25 mph, the tranny slips a bit. Is this normal? due to the partial lockup? I just had a leak on the output seal, and changed and refilled it, fluid level's fine.
09-03-2008, 09:41 AM
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In lower gears the TC is not locked and you'll slide
RPM against the converter's coupling with torque.
Aftermarket 10" converters, especially certain
ones, tend to slip in lockup more than the stocker.
I never noticed the stocker slipping, though I had
that swapped out after the first year. There is
also "slip learning" where the PCM tries to give
"just enough" line pressure for the job, only the
road and the weather always change so it's always
a little bit wrong. That kind of stuff can be
programmed out. Does this car still have the stock
converter?
RPM against the converter's coupling with torque.
Aftermarket 10" converters, especially certain
ones, tend to slip in lockup more than the stocker.
I never noticed the stocker slipping, though I had
that swapped out after the first year. There is
also "slip learning" where the PCM tries to give
"just enough" line pressure for the job, only the
road and the weather always change so it's always
a little bit wrong. That kind of stuff can be
programmed out. Does this car still have the stock
converter?
09-03-2008, 04:06 PM
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Try and decide whether this is actually slip in the
frictions (RPM would flare out a lot, w/ pedal) or just
the "elasticity" of the fluid coupling in the converter.
If it just loads up and pulls harder with a small RPM
increase, this would be pretty normal. If RPMs go up
a lot and acceleration doesn't, that's abnormal (with
no change of gear).
Wouldn't assume anything as far as converter, I had
my first aftermarket one by maybe 15K miles. But if
you foot-brake it and it binds up at about 1500-2000
RPM then stocker it is.
frictions (RPM would flare out a lot, w/ pedal) or just
the "elasticity" of the fluid coupling in the converter.
If it just loads up and pulls harder with a small RPM
increase, this would be pretty normal. If RPMs go up
a lot and acceleration doesn't, that's abnormal (with
no change of gear).
Wouldn't assume anything as far as converter, I had
my first aftermarket one by maybe 15K miles. But if
you foot-brake it and it binds up at about 1500-2000
RPM then stocker it is.
09-03-2008, 08:16 PM
#5
Try and decide whether this is actually slip in the
frictions (RPM would flare out a lot, w/ pedal) or just
the "elasticity" of the fluid coupling in the converter.
If it just loads up and pulls harder with a small RPM
increase, this would be pretty normal. If RPMs go up
a lot and acceleration doesn't, that's abnormal (with
no change of gear).
Wouldn't assume anything as far as converter, I had
my first aftermarket one by maybe 15K miles. But if
you foot-brake it and it binds up at about 1500-2000
RPM then stocker it is.
frictions (RPM would flare out a lot, w/ pedal) or just
the "elasticity" of the fluid coupling in the converter.
If it just loads up and pulls harder with a small RPM
increase, this would be pretty normal. If RPMs go up
a lot and acceleration doesn't, that's abnormal (with
no change of gear).
Wouldn't assume anything as far as converter, I had
my first aftermarket one by maybe 15K miles. But if
you foot-brake it and it binds up at about 1500-2000
RPM then stocker it is.
Well said. Last edited by SOMbitch; 09-03-2008 at 08:25 PM.
