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Location: Brisbane
Registered: June 2003
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kinda weird auto box or diff? issues.
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Sun, 01 February 2004 02:58
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Im having some weird experiences with my auto box in the ma70 atm. It is clunking when i am pulled up and change gears, like r to d. It drives around brilliantly and changes both up and down with ease and no clunking. Or could it be the backlash in the diff???
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Location: Kita-Ku, Sapporo, Japan
Registered: January 2003
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Re: kinda weird auto box or diff? issues.
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Sun, 01 February 2004 15:28

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check the gearbox mount/s.
put it in nuetral and wiggle the tailshaft with wheels on the ground..... should tell you if diff is loose.
could it be internal backlash in the box?? how would you check on an auto?? hmmmm
Cya, Stewart
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Location: Brisbane
Registered: June 2003
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Re: kinda weird auto box or diff? issues.
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Mon, 02 February 2004 09:36

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uni's seem to be ok, but yeah im thinking it may bwe the backlash in the box as well..but im fucked if i know how to fix it!
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Location: Brisbane
Registered: February 2003
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Re: kinda weird auto box or diff? issues.
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Mon, 02 February 2004 12:09

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take to auto-trans shop and then bend over for some serious cash-extraction.... or
.. there might be some notes 'out there' about about adjusting them gearboxes (limited to gaps between solenoids/plungers and bands).
tried the electric transmission articles on <http://www.autoshop101.com/autoshop15.html> ?
can you get under it and identify the model of gearbox? the 1G-GTE uses an A340E gearbox - but your 7M might have improved hardware behind it.
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Location: Brisbane
Registered: June 2003
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Re: kinda weird auto box or diff? issues.
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Mon, 02 February 2004 12:11

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charles yeah mine is an a340e
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Location: Brisbane
Registered: February 2003
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Re: kinda weird auto box or diff? issues.
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Mon, 02 February 2004 13:12

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am at a loss here - fluid level OK?
otherwise, google i think might helpful ... the autoshop PDFs that i have locally don't talk about diagnosing mechanical faults like 'clunks' ... ;(
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Location: Brisbane
Registered: June 2003
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Re: kinda weird auto box or diff? issues.
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Tue, 03 February 2004 12:10

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do you want to sell your a340e charles?
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Location: Sydney
Registered: January 2004
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Location: tas
Registered: June 2002
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Re: kinda weird auto box or diff? issues.
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Thu, 04 March 2004 14:13

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clunking here too.
My a340e transmission is shocking when i go from P to R. It shakes the whole car as if you were hit up the ass from another car. It's very worrying. It also does it when i go to D but not much.
This shouldn't be happening becuase the auto trans was recently reconditioned. Could it be the trans fluid? I will check my diff for looseness tommorow. It drives fine otherwise.
would love to know why it does this. I know these transmissions are also used in lexus's and are known to be very smooth transmissions.
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Location: 1st street on the right
Registered: November 2002
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Re: kinda weird auto box or diff? issues.
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Thu, 04 March 2004 20:16

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Check the fluid type, well known that toyotas only like toyota type 4 fluid evn if dextron is spec. Check this article at http://planetsoarer.com/autotrans/autotrans.htm . Talks about shudders and clunks and the fix.
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Location: Sydney
Registered: January 2004
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Re: kinda weird auto box or diff? issues.
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Thu, 04 March 2004 22:13

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I read the article but it doesn't seem to offer any suggestions except a change of fluid (i did only skim maybe missed something)... I suppose it could be that simple. We know an auto specialist so might get him to have a look at it for a 6 pack (the corolla). The box has been reconditioned by the previous owner only 2 months ago..so if the mechanic tells me something bad I'll be taking the car back to where the trans got "recondidtioned".
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Location: Sydney
Registered: January 2004
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Re: kinda weird auto box or diff? issues.
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Fri, 05 March 2004 10:08

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The auto dude reckoned it was mainly a broken gearbox mount causing the noise.. he said fix that and see if it stops it. I'm going to post a thread to find out where I can get these types of mounts cheap.
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Location: 1st street on the right
Registered: November 2002
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Location: tas
Registered: June 2002
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Re: kinda weird auto box or diff? issues.
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Sat, 06 March 2004 02:24

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my tranny mounts are good, no play in the shaft either.
the supra manual says to use dextron 2, my auto trans dipstick has "dextron II" written on it. Would it be a bad idea to put this toyota type IV in there?
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Location: 1st street on the right
Registered: November 2002
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Re: kinda weird auto box or diff? issues.
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Sat, 06 March 2004 07:29
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not from what I've heard, it's said that it smooths out shifts etc
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