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Topic: 2.3 flare gearbox 2-3 (Read 1995 times) |
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pedropedro
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2.3 flare gearbox 2-3
« on: May 17th, 2010, 9:23am » |
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had gearbox reworked clutches burnt but still revs go up by 200rpm when changing 2-3
sure it is ecu any ideas appreciated
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pedropedro
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Posts: 677
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Re: 2.3 flare gearbox 2-3
« Reply #1 on: May 18th, 2010, 5:46pm » |
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interesting dicovery ..if I select winter mode, where of course it starts in 2nd gear,the shift between 2-3 is perfect ..its fast compared to mine in economy
winter mode is supposed to have softer shifts, yet on mine its "fast " compared to the economy mode,,,,in "E" mode it takes 2 secs to shift, in winter its instant....so i am guessing my problem is the ecu
just thought i would pass that on..someone else on the site was suffering same problem
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Mike H
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Renault Clio
 
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Re: 2.3 flare gearbox 2-3
« Reply #2 on: May 18th, 2010, 9:00pm » |
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Might be helpful if you can get the OBD read somehow, see if it's throwing errors, if so what
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Mike H
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pedropedro
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Re: 2.3 flare gearbox 2-3
« Reply #3 on: May 18th, 2010, 9:04pm » |
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ive done that ...no codes I need to get a replacement ecu
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Dave2302
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2006 Mercedes S55 AMG, Retired Barefoot Waterskier
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Re: 2.3 flare gearbox 2-3
« Reply #4 on: May 18th, 2010, 11:24pm » |
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I doubt it's ECU, the transmission program in the EECV is very simple and rarely gives trouble.
My moneys on the valve chest, the flare is what caused the direct clutch to burn out. The gearbox "specialist" should not have let it out with a flare, take it back and tell them to get it right this time !!
You have paid them to overhaul your gearbox, surely there must be a guarantee ??
I know it sounds silly, but it might be worth plugging in another Air Flow Meter, I have known Fords to run perfectly but have a flare caused by the AFM.
HTH Dave
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Dave "The 'ol Bear" ex Footer !
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pedropedro
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Posts: 677
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Re: 2.3 flare gearbox 2-3
« Reply #5 on: May 19th, 2010, 8:01am » |
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Dave
tks for comments ....how do you explain, when selecting winter mode the 2-3 shift is sharp and zero flare regardless of what speed i drive it at......shifts in 1/4 sec whereas in "E" mode the 2-3 shift takes 2 secs and flares. I thought winter mode softened the shifts but in my case does exactly reverse and car drives perfectly
rgds John
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Dave2302
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2006 Mercedes S55 AMG, Retired Barefoot Waterskier
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Re: 2.3 flare gearbox 2-3
« Reply #6 on: May 19th, 2010, 10:18am » |
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The programming for winter mode doesn't soften the shifts, it just starts off in 2nd gear.
You wil be using more throttle pulling away so when it shifts the line pressure (which is engine load sensitive) will be higher, thus making the shift to 3rd crisper.
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Dave "The 'ol Bear" ex Footer !
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pedropedro
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Posts: 677
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Re: 2.3 flare gearbox 2-3
« Reply #7 on: May 19th, 2010, 10:33am » |
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Dave..tks ....issue with my box is that this is actually a refurbished replacement box...in fact its the 2nd box thats been in it over 4 years ..both had same problem ...rightly or wrongly thats why looking elsewhere...the auto people are different outfit to first ..they are adamant that the box is perfect ...now they want to change ecu ...so i guess i do that and the maf then back to them if doesnt fix....it just wears you down ! car off road for a week have to unload all the tools i have in boot etc . cabs etc
youre probably thinking both replacement boxes had valve block issues and youre probably right but who knows its a dark area autoboxes i guess
I just wish someone could sort it ! john
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pedropedro
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Re: 2.3 flare gearbox 2-3
« Reply #8 on: May 19th, 2010, 10:35am » |
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dave
one other thing when starting when going into reverse or drive it takes 2 secs to engage its not instant
john
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Mike H
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Renault Clio
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Re: 2.3 flare gearbox 2-3
« Reply #9 on: May 19th, 2010, 1:51pm » |
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Believe it or not that is perfectly normal, in fact owner's handbook says it shouldn't be longer than four seconds.
on May 18th, 2010, 11:24pm, Dave2302 wrote:I doubt it's ECU, .... I know it sounds silly, but it might be worth plugging in another Air Flow Meter, I have known Fords to run perfectly but have a flare caused by the AFM.
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I'll go with that, a new MAF totally transformed my car!
Before was just like kn*ckered autobox, after, perfect.
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Mike H
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pedropedro
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Posts: 677
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Re: 2.3 flare gearbox 2-3
« Reply #10 on: May 19th, 2010, 2:42pm » |
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ok tks for that ...highlander's sending me a MAF and ECU...so MAF first although on obd2 it looks ok.... so wait and see
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Mike H
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Renault Clio
Posts: 2594
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Re: 2.3 flare gearbox 2-3
« Reply #11 on: May 19th, 2010, 3:44pm » |
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If there's no error codes then probably means the ECU is managing to hold it together.
I am imagining if the air flow measurement is not quite right, say a bit low, the ECU figures maybe the engine output will be low, so maybe lets the torque converter run a bit longer before locking into gear properly with the clutch. Just a guess, but that's what I was figuring was going on with my overdrive problem, it was "hunting" up and down between 3 & 4 without locking properly into either. In other words like the ECU couldn't decide which it should use, because the inputs don't make sense for either case.
Eventually it would go into LOS, wash its hands of the box entirely, after which the box would work normally without the "interference" from the ECU. That is what convinced me in the end that my box doesn't have an actual fault.
I was even looking looking for 2nd hand boxes at one point, but getting and fitting one still wouldn't have cured it!
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Mike H
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Dave2302
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2006 Mercedes S55 AMG, Retired Barefoot Waterskier
Posts: 1119
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Re: 2.3 flare gearbox 2-3
« Reply #12 on: May 19th, 2010, 9:22pm » |
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I've had lots of different EECV controlled Fords including Scorpios in my workshop with Flare issues.
Some are after a full trans rebuild too 
No faults showing and engines running perfectly, yet a MAF has cured them, don't know why, hell, don't really care why, but I know that in a lot of cases it cures the beggars 
Cheers Dave
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Dave "The 'ol Bear" ex Footer !
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misch
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I'm a YaBB newbie!
Posts: 32
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Re: 2.3 flare gearbox 2-3
« Reply #13 on: May 25th, 2010, 9:26am » |
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@John
I tried yours trick with driving in winter mode, at first it seemed that it cured the problem, but that is only due to the low RPM's because when you start in a 2nd gear in a winter mode, 2-3 shift occurs in around 2000 rpm's and there is no flare, but if you press hard throtle , unfortunately, significant flare happens, and it shifts in a 3rd around 3200-3300 RPM's...have you consider buying remanufactured and uppgraded valve body on ebay, they don't seem to expensive http://shop.ebay.com/?_from=R40&_trksid=p3907.m570.l1313&_nkw=4r 44e+valve+body&_sacat=See-All-Categories
regards!
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pedropedro
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Re: 2.3 flare gearbox 2-3
« Reply #14 on: May 25th, 2010, 11:25am » |
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yes changing valve body as we speak...
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misch
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Re: 2.3 flare gearbox 2-3
« Reply #15 on: May 25th, 2010, 11:54am » |
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Great...I would do that also, but it's dificult to find a good autotransmission mechanic here in Croatia (small number of cars vith AT)...could you please tell me how much you're going to pay for the labour, if it's no secret 
tnx!
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pedropedro
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Posts: 677
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Re: 2.3 flare gearbox 2-3
« Reply #16 on: May 25th, 2010, 11:59am » |
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its being done free...as the autobox people put an exchange box in and didnt sort properly....itsa days work apparently
john
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Dave2302
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2006 Mercedes S55 AMG, Retired Barefoot Waterskier
Posts: 1119
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Re: 2.3 flare gearbox 2-3
« Reply #17 on: May 25th, 2010, 6:00pm » |
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LOL, John, it's a 1 hr job tops
Messy, cos theres no drain plug, but 1hr is stringing it out
Regards Dave
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Dave "The 'ol Bear" ex Footer !
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misch
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Re: 2.3 flare gearbox 2-3
« Reply #18 on: May 26th, 2010, 7:54am » |
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Dave
is it possible to do valve body exchange by myself, or is it too complicated...and what do you think about theese remanufactured VB on ebay, are they any good
tnx
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pedropedro
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Posts: 677
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Re: 2.3 flare gearbox 2-3
« Reply #19 on: May 26th, 2010, 9:39am » |
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tks for that Dave...everyone tries to make their work appear more complex than it is to win brownie points ie big favour if we bust a gut can do it in a day etc ......drives you nuts
john
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