| Author |
Message |
Oleg Akulshin
Tinkerer
Vic
V8 UZZ31
Posts: 26
Reg: 06-2009
|
Had this problem for a while now. When you slam the acceleration all the way down so that kick down is activated, the engine revs really high and then it feels that it just cant switch the gears, during this process revs jump up and down from 3000 to redline.. creating this surging feeling... If i let go of the acceleration just abit the gears shift and it goes to next gear and same thing continues for other gears. What i've done: changed fuel pump ecu, fuel pump, fuel filter, tried 2 ecu's (inc MINES), changed oil, oil filter and soo on. Although i havent yet changed the trany oil, could that be a reason? The weird thing is that unless i activate kick down switch so (ie around 90% full throttle) everything works smoothly and gears shift very smoothly... So just wondering if anyone else had a same problem or maybe can help out? |
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT
Posts: 663
Reg: 11-2007
|
Most likely transmission related.
Transmission is dropping in/out between gears rapidly, this might explain the rev fluctuations.
Try changing the transmission fluid and use only Toyota Type T-IV. |
Matthew Sharpe
Goo Roo
North Island
JZZ31
Posts: 5399
Reg: 10-2005
|
Yup, sounds like it transmission problems to me. Transmission flush is worth a try but it could be a sign of terminal things on the horizon. |
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31
Posts: 11489
Reg: 11-2004
|
Sticky solenoids? |
Mario Lentini
TryHard
Queensland
UZZ32 V8
Posts: 110
Reg: 07-2005
|
Why not pulling the plug (wires) on the kick down under the throttle and see what it does when you are flat to the floor and manually shift the Auto at say 5800 rpm . Just to see if it not the switch sticking or something stupid like that .
I am more so thinking like the other guys here and say it's the Auto , but you got to try what you can before you go pulling that out . |
Mike Bradberry
Goo Roo
Queensland
V8 UnLimited
Posts: 1862
Reg: 07-2005
|
Could even be just low on transmission fluid. |
Oleg Akulshin
Tinkerer
Vic
V8 UZZ31
Posts: 27
Reg: 06-2009
|
Thanks guys, i just realised that i had a stupidity of putting dextron in before. So gona flush the fluid with ATF type IV and see how that goes. |
Mike Beck
Goo Roo
New Zealand
325i Coupe
Posts: 4429
Reg: 11-2005
|
How many kilometers has your car got? |
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT
Posts: 671
Reg: 11-2007
|
Yeah definitely should put Type T-IV in there, can't believe even most Toyota dealers say to put Dexron in there. |
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31
Posts: 11491
Reg: 11-2004
|
It's understandable as the dip stick says "Dexron" |
Damian Ware
Goo Roo
Victoria
UZZ32
Posts: 1454
Reg: 10-2005
|
On a V8 soarer is says Type II on the dip stick. |
Oleg Akulshin
Tinkerer
Vic
V8 UZZ31
Posts: 28
Reg: 06-2009
|
mine actually says dexron... but yeah its got 150k on the engine |
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT
Posts: 673
Reg: 11-2007
|
Type T-IV replaces Type II.
Peter for the TT's Yes Dexron, Type T-IV for the V8's.
Apparently Toyota thought T-II means Dexron II, which is why most Dealers reccomend Dexron II for the V8's.
But Dexron in the Automatic trans mated to the V8's causes rough shifting and other problems. |
Damian Ware
Goo Roo
Victoria
UZZ32
Posts: 1455
Reg: 10-2005
|
Oleg, might be a TT dip stick? |
Damian Ware
Goo Roo
Victoria
UZZ32
Posts: 1456
Reg: 10-2005
|
Boris Siljanoski wrote on Friday, March 26, 2010 - 10:47 pm:Peter for the TT's Yes Dexron,
Nope TT's in stock form don't like Dexron or at least mine didn't.
There is a guide posted up by Neil from rush imports as to which fluid to use with which auto including shift kit and other mods.
My TT auto developed a shudder at about 4000rpm with 2/3 throttle with Dex III. |
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT
Posts: 674
Reg: 11-2007
|
Weird might have just been yours Damian. |
Neil Griffiths
Goo Roo
NSW
I have a Cadillac  and a Supercharged Manual V8 
Posts: 4930
Reg: 07-2005
|
Oleg Akulshin wrote on Friday, March 26, 2010 - 08:03 pm:Thanks guys, i just realised that i had a stupidity of putting dextron in before. So gona flush the fluid with ATF type IV and see how that goes.
Put some Lube Guard Platinum into the trans and leave the Dex 3 in there ( It is a converter )
For those of you who want to do a full flush, flush with Dex 3 then put the Platinum in then refill.
OR,
Full Syn Dex 3 ATF will work.
( I run this in a STOCK box with repetitive 11.+ sec passes ) |
Oleg Akulshin
Tinkerer
Vic
V8 UZZ31
Posts: 29
Reg: 06-2009
|
Oh wow thanks alot, i just read about that lube guard on their website. And it sounded pretty good, ill give it a go today. |
Boris Siljanoski
DieHard
Western Australia
Soarer GZ20 TT
Posts: 679
Reg: 11-2007
|
Niel how is it like with daily driving if you do much, as in shift smoothness, then again you must be running a shift kit. |
Oleg Akulshin
Tinkerer
Vic
V8 UZZ31
Posts: 57
Reg: 06-2009
|
wow it all turned out to be faulty MAF! Unplugged it and car came to life, never •• it gave wheel spin on take off... now does, even with new tires! and no surging |
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