I am Sick of A4 and Converter Troubles
It was looked at by Dave and he told you what he saw it was not in the converter, but we are helping you find whats up!
this is not a new issue we have seen it many times as stated above.
The pump if warped will not show any debris the pump halfs have to be machined to true the surface on both halfs under load the twist on the cast alum. pump body that uses no gasket, this will push the pump apart and transfer fluid to the clutch port as the line port and clutch port are next to each other
it will put the clutch on and drag down the engine.
Also have you reset the PCM or checked for KR this will also reduce the power
and have the same feel
If you go into the throttle easy the clutch will not come on as the STR will be lower try that and see what it feels like
Mike
this is not a new issue we have seen it many times as stated above.
The pump if warped will not show any debris the pump halfs have to be machined to true the surface on both halfs under load the twist on the cast alum. pump body that uses no gasket, this will push the pump apart and transfer fluid to the clutch port as the line port and clutch port are next to each other
it will put the clutch on and drag down the engine.
Also have you reset the PCM or checked for KR this will also reduce the power
and have the same feel
If you go into the throttle easy the clutch will not come on as the STR will be lower try that and see what it feels like
Mike
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From: Shelby Twp. Mich
Mike,at Part Throttle If I remember correctly it seems to hit harder from a 40-45 mph roll?What would this mean?I have reset the PCM ,but I havent checked for KR ,I will do that this afternoon and let you know what I have got....
Last edited by Pro Mouse; Sep 17, 2006 at 11:52 AM.
If the lockup clutch is dragging it should reduce torque
multiplication and slip RPM. This seems consistent with
the described symptoms; I was thinking only of some
external cause but sounds like there could be an internal
way for it to happen, too. But don't know how you could
determine a fluidic problem easily.
multiplication and slip RPM. This seems consistent with
the described symptoms; I was thinking only of some
external cause but sounds like there could be an internal
way for it to happen, too. But don't know how you could
determine a fluidic problem easily.
Originally Posted by Yank
I talked to Dave
and he said for you to check your trans when the converter was sent in for restall - it had some dark marks on the clutch that are not normal and look as if you have a cross leak in the transfront pump or valvebody allowing line oil to feed the converter clutch - allowing on the clutch to get partial apply under load with the twisting force on the stator shaft from the converter STR
We have seen this many times as the 4l60-e has a cast alum pump.
you can check this by removing the lock up control sol. from the valve body under the pan if you issue goes away the trans is in need of review.
and he said for you to check your trans when the converter was sent in for restall - it had some dark marks on the clutch that are not normal and look as if you have a cross leak in the transfront pump or valvebody allowing line oil to feed the converter clutch - allowing on the clutch to get partial apply under load with the twisting force on the stator shaft from the converter STR
We have seen this many times as the 4l60-e has a cast alum pump.
you can check this by removing the lock up control sol. from the valve body under the pan if you issue goes away the trans is in need of review.
On The Tree
Joined: Dec 2003
Posts: 109
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If you send the entire unit to a trans shop that has a trans dyno they can pinpoint the problem. They can test the converter and the trans as a unit. I had a similar problem about a year ago. Is it the converter or is it the trans???
Dave Myers at Yank helped me out by suggesting I send the entire unit up to Gear Star. To make a long story short they ended up building the trans for me. Then they tested the A4 and converter on the dyno so they know it works. Problem solved.
If you think about it the A4 is much more likely to be the problem and if its cross flow in the pump the problem is in the trans. The converter has very few moving parts while the trans has more parts in it than the engine.
There's just not very much that can go wrong with a converter unless the blades flare.
Dave Myers at Yank helped me out by suggesting I send the entire unit up to Gear Star. To make a long story short they ended up building the trans for me. Then they tested the A4 and converter on the dyno so they know it works. Problem solved.
If you think about it the A4 is much more likely to be the problem and if its cross flow in the pump the problem is in the trans. The converter has very few moving parts while the trans has more parts in it than the engine.
There's just not very much that can go wrong with a converter unless the blades flare.