Tuesday, July 08, 2008 - 07:45 am, by: Jason Thornton(Jay9959)
Hi need some info on A340LE transmission. I have searched the threads could not fined any post with a similar to my problem. My auto box is slipping when at wide open throttle around the 4000rpm mark and then revs out speed dose not move like if its been shoved into neutral, if i go to half throttle its fine and under normal driving its ok too is there something wrong some were.
I have changed elec speedo drive to cable too as this motor/box is not in soarer etc dose this affect the solenoids in the box
Oil im using is valvoline ATF dexron 3 as i was told this oil replaced dex2 as marked on dipstick this oil went in the transmission before reading posts on Soarer Central.
Cheers Jay Any info would help as getting full throttle will be interesting to see what this motor can do.
Tuesday, July 08, 2008 - 08:44 am, by: Scott Casey(V8soarer_1991)
im not a gbox specialist but people ask what colour (worn trans) certain smell (clutch packs) harsh down shifts (solenoids, line pressure) missing shifts staying in gear (solenoids) does it do this after or around this revs (torque converter)
my brothers does the same and it needs a rebuild (clutch packs)
Tuesday, July 08, 2008 - 10:34 am, by: Jason Thornton(Jay9959)
Ok colour of oil is still red
Have not had any smell from the oil
Going down gears is normal
The only time it stays in gear for long time is from 1st to 2nd but fells normal no more than 8-10sec though(only when cold)
When i put my foot on the throttle to the floor hard from standing still car dose go but when it hits around 4000rpm it just revs out higher and speed stays the same.
Also when going around 50-60kmh and floor it it dose kick back gear and just revs out higher and not go any were like its been shoved into neutral.
From what you said Scott sounds like converter has had it or its on it way. Can not even get wheels to spin or chirp from a standing start take off under hard acceleration
What price would i be looking at for converter or can these be reconditioned.
Peter Nitschke Junk Filterer South Australia UZZ30 UZZ31
Tuesday, July 08, 2008 - 01:29 pm, by: Peter Nitschke(Pen)
Jason, if you have any devices connected to the ECU wiring, check all the joints. A couple of years ago some dodgy joints on mine played up, effectively removing some speed or RPM info from the ECU, so it really wasn't sure what to do with the gearbox.
Tuesday, July 08, 2008 - 08:31 pm, by: Jason Thornton(Jay9959)
Yes i do have two devices one boost/fuel cut is two diodes and trim pot got from one of the posts and a tacho converter from 5volt to 12volt pulse so my tacho would work. Still did it with the boost/fuel cut not installed.
Im not running the fuel ECU straight 12volt.
Ye i thought i put the wrong fluid in the box to after reading through some of these posts but a lot of people have told me that Dexron3 has replaced dexron2.
With the clutch packs don't they leave bits through the oil/sum, going to pull pan off over the weekend and take a look in side,is there any thing i should take note of.
Wednesday, July 09, 2008 - 07:34 am, by: Chris Prak(Carizma)
Slipping when under pressure (on boost and between changes) is usually clutch packs as the gearbox can't hold the power as Matt has said.
Mine started to do this, particularly when boost hit 2500-4000 rpm and also shifting to 2nd gear on throttle.
When swapping the box over, I checked the magnets on the gearbox pan and they were covered in metal fragments. So maybe check that, then you will know if new box is on order. Use only Toyota orange sealant when re-sealing pan otherwise will always leak.
Saturday, July 12, 2008 - 08:38 pm, by: Jason Thornton(Jay9959)
Ok ive pulled the pan off and valve body and found not a thing the magnets are clean bottom of the pan has slight muck on it. Checked solenoids too all ok.
Could this just be valve body pressure problem or just use of the wrong fluid.
Have only changed exhaust and gone front mount cooler not even dump pipe yet.
With oil the toyota type4 is that thicker than the dexron 3 oil, have found penrite ATF MHP trans oil and it states that can be used where toyota type4 fluid is used
Saturday, July 12, 2008 - 09:42 pm, by: Jason Thornton(Jay9959)
Hi just been reading up,can O2 sensor or the coolant sensor have any thing to do with the problem ive got reason i ask is that im going through a lot of fuel.
I thought that these two sensors were manly to tell the computer how much fuel to feed the engine.
Thursday, July 17, 2008 - 09:45 am, by: Jason Thornton(Jay9959)
Hi Matt yes mine is a TT
I know this has been talked about before and i have read through these post about locking the converter but can not find witch wire i need to cut and put a switch in.
Dose the computer need both speed sensors for it to work properly.
If this dose not work ill be looking for 2nd box. Or going reco
Friday, July 18, 2008 - 07:35 pm, by: Jason Thornton(Jay9959)
Hi guys The other night i put the electric speedo drive back in took it for a drive and now a can get full throttle with out the auto slipping like made so the std computer ive got seems to need that input.So it all fixed.
Any one know what pulse the speedo works off or will a after market speedo work.
Now its popping at WOT think its running to rich 78psi fuel rising rate reg.
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