I'm Still naving problems with the gearchange on the Yaris when cold. 1st-2nd and 2nd to 3rd are very chrunchy.
This problem started when I changed the gear oil for Toyota 75w-90 gear oil. The dealer eventually changed the oil for Shell Donax TA (ATF) which made a big difference but the poor gearchange when cold remains
A friend has reccomended Red Line MT90. Should I give this a try or would I be best to leave alone?
Thanks,
Mark
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Redline gear oil is friction-modified to give better synchro engagement and so should give a useful improvement in change quality. For your car you should use Redline MTL (as opposed to MT). It am not a great fan of using Dexron ATF in gearboxes - it has a lower viscosity than the 75W-90 but is more "slippery" and will give a slower synchro lock-up. If you want to use an ATF then you should use a 'Type A Suffix A' oil like Mobil ATF200, Castrol Agri-ATF or Elf Trans-O-Matic. - these will provide better synchro action.
Other good gear oils include Castrol SMS-X and Motul 75W-90 - both of these will give a fast gearchange. SMS-X is particularly good in cold weather since it has a lower viscosity coefficient.
MTL is a good place to start though and costs about £10 a quart - try it and let us know....
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Hi,
thanks for your advice Ill give the MTL a try I've heard reports of Yaris gearboxes failing as early as 23k so I'm a bit worried.
The OE gear oil must have been different to thr spec in the handbook which said use 75w-90 API GL4 or 5.
Mark
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You should look up an earlier thread titled 'Yaris whine' which dealt with change problems, noisy reverse gear and the response of Toyota.
Assuming your car is still under warranty, take it back immediately and have the gearbox assessed by their transmission expert. There were gearbox issues and my own car had major replacement parts fitted, including a new clutch. Toyota Dealer was magnificient. If you are still under warranty, get it inspected quickly.
Jaytee
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Hi i also want to change the gear oil for my yaris can any one recommend me which oil should i use Castrol SMS-X or Red line MTL.Thanks.
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Jaytee is right, but my immediate thought is that if it's crunchy when cold with ATF then an SAE 90 will certainly make it worse. Ask anyone with a 5 speed Range Rover who's put it in instead of the recommended ATF fluid! The big question is what is the original spec? Why was the change to 75-90 made? Dealer recommendation? Was this a 'cheap'solution instead of a proper job as jaytee suggests? The other problem is that there will be a residue of 75-90 in the box (they never drain fuly), and it's amazing how this, mixed with the ATF, will still affect gear change quality. I'd get back to the dealer.
JS
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Unfortunately the car is 4 years old and the Toyota don't want to know as the car was imported. I changed the oil with 75w-90 as this was reccomended in the handbook the dealer fitted a modified gear linkage which didn't help then as a last resort changed the 75w-90 for ATF.
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We have a Yaris 1.0 at over 5 years old. So far it's been very trouble free, just a water pump last year.
I haven't changed the gearbox oil at all. What's the recommended interval, if at all. Gear change fine, a little notchy when very cold, but otherwise fine !
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Sorry to hear the car is out of warranty. Your problem sounds a little like clutch drag, ie the clutch not separating completely and thus affecting the change. Different oils will have an influence but, if it is clutch issues and this is well possible after 4 years use, the real cure is to replace the clutch. This is not cheap but, surely a Toyota dealer can diagnose the clutch operation for you and advise?
Jaytee
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I had this problem on my fiesta. gearchange superb when hot, but 1 to 2 or 3 to 2 crunched when cold.
Molyslip gearbox additive added. Problem 999% solved...
madf
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Hi Jaytee I had the car in to a clutch specialist to investigate this problem and also an intermittant clutch judder when cold.
They couldn't find a problem (I'm sure there is).
The gearchange deteriorated immediately when I changed the oil. Its possibly a combination of both.
Toyota quoted £450 for a clutch change, the specialist was £225
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Almost identical problems to mine on an 02 yaris 1.3. The problem is fully described in the previous thread some 6 months ago. The clutch judder is really the final symptom of a knackered clutch. I am told its not particularly complicated to change the cluth plate, pressure plate and check the flywheel for 'blueing', caused by peeps holding the car on a slipping clutch.
These days, there is no asbestos in the lining compound and the lining is much more sensitive to abuse. I expect the previous owner(s) were used to holding the car on the clutch and the resultant judder is probably why they got rid of the car.
A possibility also that oil has contaminated the clutch lining, probably from the gearbox. Has there been any oil dripping?
Bite the bullet and find a good, independent garage, well versed in toyota and clutch replacements. I have exactly this in Midsomer Norton.
Good luck
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Hi,
thanks for your advice I've had the car from new so I know the clutch/gearbox isn't abused (i've taken cars to 100k+ on the original clutch) I haven't noticed any oil dripping.
I was a little surprised that the clutch specialist didn't find a problem but it only seems to be there when cold and pulling off gently.
I've just taken delivery of some Red line MTL so I'll give that a try for the gear change, and save up for a clutch change.
Mark
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Chaged the ATF for Red Line MTL on Monday with an immediate improvement. There is still a bit of a snatch in to 2nd when cold
but the overall gear selection feels a lot more positive.
The clutch is still intermittantly juddering when cold, perhaps a clutch change may be in order
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When you say that the gears "crunch", is it actually the gearbox doing it?
I ask because, when I first got my Accent, I had a bad habit of moving the gear lever out of gear before the clutch pedal was fully to the floor. In cold weather this caused the cable-operated linkage to click intermittently going from first to second gear. The actual gearbox has *never* crunched on this car in the 15000 miles I've driven it, but the noise it made I erroneously thought was a crunching box. An adjustment/regreasing of the linkage, coupled with some friendly re-educating from the dealer has resulted in faultless gearchanges ever since.
Are you sure this isn't what is happening with the Yaris? I find it hard to believe that such a well-engineered car would have such a fundamental problem so early on.
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Hi,
you are right that technique is very important the yaris needs very slow gearchanges to help prevent chrunching but in my case the chrunching occurred when I changed the gear oil originally.
Unfortunately the weak point of the yaris seems to be the clutch and gearbox I've read reports of gearbox failures at 23k and intermittant clutch judder when cold.
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I suspect this another of the dreaded Toyota gearbox problems, not clutch.
The bearings in my Corolla box failed at about 100k (but had been noisy since 65k), taking out the 5th gear and various other bits... to the cost of over £1100 to fix. I had box selection problems from new, and despite complaints to Toyota GB, they didn't want to know.
I have heard from 3 independent gearbox specialist that they see many Toyota's with bad 'box problems, even from new.
Personally, after my experience, I'll never touch a Toyota again.
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We got rid of a Yaris 1.3 in December 2005: the drive shafts had leaking seals, both sides. After much argument, the drive shafts were changed under warranty, rather than just replace the seals, for the 3rd time! This seemed to stop oil loss, but as we had lost confidence in the dealer, and the gearbox had always whined, we got shot of it.
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I suspect this another of the dreaded Toyota gearbox problems, not clutch. The bearings in my Corolla box failed at about 100k (but had been noisy since 65k), taking out the 5th gear and various other bits... to the cost of over £1100 to fix. I had box selection problems from new, and despite complaints to Toyota GB, they didn't want to know. I have heard from 3 independent gearbox specialist that they see many Toyota's with bad 'box problems, even from new. Personally, after my experience, I'll never touch a Toyota again.
Well I suspect you are talking male cow excrement as my son;'s Yaris did 130K miles and the gerarbox was as new and the reliability states do not support your (unfounded with no facts to back up wild claims ) contention. And our other Yarises have never had any gearboox issues...So on a sample of 3:1 you are outvoted..
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999% solved. Looks like mathematics you didnt solve!
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Nice to see my old thread is still hopefully helping people.
Kept the Yaris for 13 years and it's still going strong according to the MOT history.
During its life with us the gear change was kept smooth with one more oil change with Redline MTL and occasional clutch bleeding.
Never got to the root of the clutch judder in winter.
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Nice to see my old thread is still hopefully helping people. Kept the Yaris for 13 years and it's still going strong according to the MOT history. During its life with us the gear change was kept smooth with one more oil change with Redline MTL and occasional clutch bleeding. Never got to the root of the clutch judder in winter.
I reckon it's condesnation on the flywheel in cold weather...
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