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Serious Auto box ploblem! PLEASE HELP


Kaan W

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I was just on my around town when I realised my car wouldnt upshift from 2nd, no matter how gently I applied the throttle it just wouldnt change. It would go from 1st to 2nd and vice versa but no more. After pulling over and turning the igntition off then on again it was fine which is a bit strange. The only thing I done whilst sitting at some traffic lights was pulled the top part of the dash out a couple of inches as I realised there were no screws holding it in, the bit with the mileage display in. Any ideas what could have caused this anything to do with loose wires behind the dash or something more mechanical? Thanks.

 

UPDATE: Ive now lost ALL gears completely having try again round the block and had to push it back! I bet my neighbours are having a right laugh.

Edited by Kaan W (see edit history)
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Ok this is a serious problem now I just took it back out and got to a set of traffic lights on a hill, took my foot off the brake in D and it started rolling back as if it was breaking its ability to hold. When accelerating to pull away it was reving to 3-5k rpm then not moving then suddenly kicked in a gripped spinning the wheels. After the hill just stayed in 1st gear and all the way home struggling to find gears and constant high reving.

 

Fluid is bright red.

 

Any other suggestions as I only brought the car saturday and am quite frusterated! Thanks

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560 ft lbs of torque perhaps

 

Apparently the syvecs lowers torque to a safe level during gear changes for a split second to prevent any damage. Im just not sure what could be causing this and how much a new auto box costs! Or whether its just the converter slipping im clueless on this.

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Apparently the syvecs lowers torque to a safe level during gear changes for a split second to prevent any damage. Im just not sure what could be causing this and how much a new auto box costs! Or whether its just the converter slipping im clueless on this.

 

Perhaps that isn't enough, stock torque is something like 315 ft lbs and now its got 560 !

That's approx 78 % more

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ahhh man gutting news. Sounds like the autobox has gone, you can pick up second hand ones for peanuts

 

Well thats good news, but will it happen again? Can you get replacment stronger parts for this box or is it just the th400 or 6 speed conversion..

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Built auto boxes aren't cheap. But it's obviously lasted this long. I personally would chance a low mileage second hand one.

 

What about an a340e rebuild kit as found on ebay? I know an automatic transnission specialist that could do the work for me so this would be the cheapest option I suppose.

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Built auto boxes aren't cheap. But it's obviously lasted this long. I personally would chance a low mileage second hand one.

 

I could be wrong but the sales advert says the single turbo was mapped by Ryan in Dec 2011

so it hasn't really lasted very long by the sound of it unless it was running another set up

before that.

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I could be wrong but the sales advert says the single turbo was mapped by Ryan in Dec 2011

so it hasn't really lasted very long by the sound of it unless it was running another set up

before that.

 

I think it was single before that but not as much power going through it. Im gunno ask tomorrow a trans specialist and see what my options are. It might be worth going for a built th400 as he probably has dozens of these laying about in which case I just need the bellhousing. Probably.

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Does the auto box have an extra ATF cooler?

 

No just a stock UK spec one.

 

UPDATE: Just took the car round the block to see if its any better after cooling down and I lost all gears halfway round and just had to push the F****** thing back on to my drive. No Reverse no drive no 1st or 2nd no nothing. BLAST!

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No just a stock UK spec one.

 

UPDATE: Just took the car round the block to see if its any better after cooling down and I lost all gears halfway round and just had to push the F****** thing back on to my drive. No Reverse no drive no 1st or 2nd no nothing. BLAST!

 

Listen to dnk, 78% more torque going through the box has obviously killed it.

 

As rob states auto boxes go for some haribo and a little bum tickle but is it worth a standard box knowing it will break again.

 

Built box or 6 speed or buy all of Kerons autoboxes as spares :D (all not cheap answers)

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Just a thought, stop driving it around the block until you've had it looked at???

 

I agree with Dunk, probably fried the auto box, they're not really designed to handle that amount.

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I'll wager the filter is blocked. Drain the fluid, drop the sump and check the filter.

 

I just phoned an auto specialist and he said the same thing that the oil pickup is getting blocked. I have the gears for about 20 seconds then nothing. I`ll try dropping the sump tomorrow and see what I can find. Hopefully it will work as normal with it unblocked.

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