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Shudder in n/a auto overdrive clutch

Started by OldF@rt · 18 July 2003 · 24 replies

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OldF@rtArchived member
Driving into work this morning, my gearbox suddenly started shuddering when it shifted into the overdrive lockup. Quite OK otherwise (including fourth gear) and no warning. It's much worse under load. Any ideas? I was going to adjust the front bands this weekend, would that help? Or is the thing karked which means I have an excuse to convert to manual sooner than I'd planned. ? ta! Malcolm Some original photos have not been recovered yet.
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BeefsVLArchived member
mine does that too, it is starting to do it in 3rd aswell now. how do you adjust the bands, is it hard to do.
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kruisheerArchived member
I have a similar problem. My box shudders when it first drops into 4th sometimes, or when I try to accelerate slowly in 4th. I have tried adjusting the bands etc and had no luck Adjusting the bands is easy if you have the tools. You need a qtr inch drive torque wrench, and follow the procedure in your gregory's.
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OVL087Archived member
its just the lock up dying. it wont cause any problems whatsoever so keep driving it. you will be right
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MidzArchived member
haha yeah i wouldn't worry about that My gearbox had a 400rpm slip at light throttle between 2-3 gear :S
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turbolukeArchived member
cut the light blue wire that runs into the auto ecu. that will stop the shuddering
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MidzArchived member
don't cut , just pull it out that way u can put it back if u feel the need.
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turbolukeArchived member
cut and put a switch on it
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OVL087Archived member
undo the solenoid on the box itself
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RED88VLArchived member
do a thread search for: torque converter i had the same problem, the lockup torque converter is most likely dead. or dying.
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JimArchived member
I just had my auto re-built and i have that shudder when i try to accelerate in 4th to. Nothing to worry about.
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turbolukeArchived member
Quote: Nothing to worry about yes it is, it shouldnt do that
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JimArchived member
well i checked and it said it was fine. So i was just going by what i was told. Might hav to look into it more. hmmmmmmmmmmmmm
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OVL087Archived member
Quote: Originally Posted by turboluke Quote: Nothing to worry about yes it is, it shouldnt do that naaaahhhhhhh its all good
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OldF@rtArchived member
Quote: Originally Posted by BeefsVL mine does that too, it is starting to do it in 3rd aswell now. how do you adjust the bands, is it hard to do. Adjusted the front band yesterday and the gearbox not only shifts more smoothly but the shudder when the overdrive cuts in is reduced! I still have a problem but it gives me more time. Front band is the easy one to adjust. There's a triangular cover in front of the main oil pan towards the driver's side held on with three 10mm bolts. Remove it (and dodge a small amount of ATF that drips out) and you'll see the band adjuster itself (8mm) held in place by a 17mm lock nut. Hold the adjuster and loosen the lock nut with a spanner, do up the adjuster to the proper torque (11 Nm?, it's low anyway), back it off two complete turns, then tighten the lock nut. Then refit the cap. Simple. The rear band is apparently similar to adjust, but you have to remove the oil pan to get to it Some original photos have not been recovered yet.
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MidzArchived member
so did it make an improvement to the shifts ? Where u getting any slip in the gearbox at all ? did u remove the lock nut fully then tightened then band ? Sorry about the trival questions but i have never done this b4 and im going to attempt it very very shortly.
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stockcalais_Archived member
turboluke if i cut the light blue wire what will the effect be? i.e. will the converter never lock up? meaning less economy and more revs? pls explain for the layperson(s)!
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OldF@rtArchived member
Quote: Originally Posted by Midz so did it make an improvement to the shifts ?. BIG improvement; I wasn't getting slippage but the shifts were quite harsh. They're now smoother with no sign of slippage. Quote: Originally Posted by Midz did u remove the lock nut fully then tightened then band ??. Nope, just undid it a couple of turns. Just make sure that when you are torquing up the 8mm bolt that it doesn't foul; you may have to shift it further. Come to think of it, maybe removing the lock nut altogether then putting it back in afterwards may be the easiest way after all. :idea: Quote: Originally Posted by Midz Sorry about the trival questions but i have never done this b4 and im going to attempt it very very shortly. Certainly worth doing. It was complicated by the fact that some rock-ape at some stage had rounded the 8mm bolt off, so the torque I used was pretty approximate. However, it works OK so I don't think exact torque is totally critical. Have fun! Some original photos have not been recovered yet.
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MidzArchived member
i think the torque is there so u apply pressure to hold the bolt there in place without snapping it off.
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OVL087Archived member
Quote: Originally Posted by stockcalais_ turboluke if i cut the light blue wire what will the effect be? i.e. will the converter never lock up? meaning less economy and more revs? pls explain for the layperson(s)! you will still engage the fourth gear , so revs etc will be fine on hwy. it will not then lock up and drop to its "fifth gear" or where most ppls auto shudder.
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