Is my auto tranny dying?
Feb 13, 2008 | 01:07 AM
#1
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Joined: Jul 2006
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From: USA
Is my auto tranny dying?
So I went through the whole lot of investigation on why my 3slow is guttless etc. (see https://www.yotatech.com/forums/f116...l-long-129883/ for the story if interested).
I think I narrowed down my lack of power down to the auto tranny. Some facts:
1. Oil level is OK, color is reddish, smells like oil. Not sure when/if it was changed
2. When I drive with O/D off and engine hot, quite often when I press O/D button (to enable it) for a very short period of time I can hear engine revving up before the overdrive kicks in, like it is disengaged inbetween.
3. I was towing a digger on a trailer some time ago (around 6,000 lbs I think) and it just wouldn't go over 44 mph, O/D off, naturally. Engine pinging (that's probably not related).
4. Recently I tried to adjust AT cable so that when the throttle is open, the AT cable has engaged a valve in the tranny (you can hear it click if you pull on the cable). After that I think it increased the pressure somewhat because especially in the morning when I move from N to D it engages hard. When everything is hot - no problem, smooth as.
5. when I go on motorway say at 60mph and I press gas down, it downshifts, RPMs start climbing up but it doesn't feel that it has guts to go faster. It may accelerate slowly but basically anything 3000-4500rpm doesn't give you any more power. Of course if you kickdown and if it goes into 4500rpm+ it goes - but who wants to do that anyway.
My friend suggests I take it to the auto tranny garage to do a full tranny flush with special detergents and machine plus oil replacement. He has Toyota people mover and says it helped to get the mid-range power back.
Can you guys let me know how your tranies feel in comparison with mine, i.e. 3vze+auto, I would appreciate - maybe it's just normal?
I think I narrowed down my lack of power down to the auto tranny. Some facts:
1. Oil level is OK, color is reddish, smells like oil. Not sure when/if it was changed
2. When I drive with O/D off and engine hot, quite often when I press O/D button (to enable it) for a very short period of time I can hear engine revving up before the overdrive kicks in, like it is disengaged inbetween.
3. I was towing a digger on a trailer some time ago (around 6,000 lbs I think) and it just wouldn't go over 44 mph, O/D off, naturally. Engine pinging (that's probably not related).
4. Recently I tried to adjust AT cable so that when the throttle is open, the AT cable has engaged a valve in the tranny (you can hear it click if you pull on the cable). After that I think it increased the pressure somewhat because especially in the morning when I move from N to D it engages hard. When everything is hot - no problem, smooth as.
5. when I go on motorway say at 60mph and I press gas down, it downshifts, RPMs start climbing up but it doesn't feel that it has guts to go faster. It may accelerate slowly but basically anything 3000-4500rpm doesn't give you any more power. Of course if you kickdown and if it goes into 4500rpm+ it goes - but who wants to do that anyway.
My friend suggests I take it to the auto tranny garage to do a full tranny flush with special detergents and machine plus oil replacement. He has Toyota people mover and says it helped to get the mid-range power back.
Can you guys let me know how your tranies feel in comparison with mine, i.e. 3vze+auto, I would appreciate - maybe it's just normal?
Feb 13, 2008 | 05:24 PM
#2
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Joined: May 2004
Posts: 2,839
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From: marlbank, canada
if the trans fluid has never been changed or you are not sure if it has, time to do it. if it doesnt smell burnt, you may have dodged a bullet. check with your local better business bureau or similar, for a trans shop. call or visit and ask plenty of questions.
good luck and keep us posted.
lee
good luck and keep us posted.
lee
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