Hi, i've just bought a 2000 Volvo V70 T5 Auto (Late shape one) from auction. When I first had the car, the battery was flat and I jumped start it and it started at first turn. Then on the dashboard, the Brake warning light, Traction control light ,ABS light and ENGINE light stay on and it says "brake system failure" on the trip computer.
I started to drive the car and everything seem Ok. The car pull well and gearbox kicked down as it should. After 10 mins drive and engine got warm, the gearbox started to play up. First was the cluck noise when engaged the gear, then gear change became very rough. Finally, it showed "Auto transmission service required"
My question is: Does the Engine warning light cause the gearbox fault? as the box works fine when cold and only had the problem once it is warmed. For example, fualty sensor?
Thanks
Edited by Pugugly {P} on 21/02/2008 at 22:02
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V70's from this year are known for gearbox problems. The problem usually lies with the valve body. The 'box bangs from gear to gear at random intervals and takes up drive roughly.
You seem to have quite combination of error messages - it could be one thing causing them all or maybe not. The traction control/brake/ABS sounds like it could be an ABS sensor - the traction control uses it so if one is down both ABS and TC will be down. You'll need to get it diagnosed with a Volvo dealer or specialist who can fault read the car.
If the gearbox is playing up get the fluid changed - this often fixes it. If it doesn't either live with it until it goes bang or you're looking at a new gearbox - probably about £2000.
The engine light is probably something like a MAF sensor or lamda sensor. It could also be related to the electronic throttle which gives problems on Volvos of this age. A sign is usually poor running and starting when cold. Cleaning it usually does the trick or else another replacement.
Until you get the car fault read you're making stabs in the dark.
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Any idea if I can change the oil by myself? Has it got a dipstick or drain plug on the gearbox?
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anyone?
Edited by Dynamic Dave on 22/02/2008 at 18:35
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you can do this...there are two ways.
auto trannys are not like engines, they hold about half their fluid in the converter and the rest in the sump. If you drain the sump, you miss the rest of the oil. So....
Way one...is to drain the ATF out of the tranny and put in an equal vol of fresh stuff. Then disconnect the return of the tranny oil to the cooler (usually in the bottom of the radiator). attach a clear plastic tube and run the engine. THE tranny will pump out all its oil, the fresh stuff and the rest of the old oil stuck in the converter. Then when bubbles appear shut off the engine. Repeat and then connect the lines up again and refill. Then run the engine for the equivalent of 10 miles to fully heat the fluid. Check the level and add if necessary. If you are really keen, you could take off the sump of the transmission and replace the strainer, but this only needs to be done every 50K or so. If the transmission is very problematic, then you might see material from the clutches in the sump, which you would have to clean scrupulously. If the fluid you have removed is very dark or has bits in it, then that is pretty worrying.
If this looks too daunting, just drain out all the fluid that will come out. Refill, then drive it normally for a day. Repeat two more times and that this is the quick fix, which is not as good. The transmission might be OK after this. If the clutches are damaged and there is particulate material in the system, then its probably beyond the amateur's help anyway.
Auto trannys are killed by towing without adequate cooling. The hotter the fluid gets, the shorter its life. I did save a transmission once (AW71) when its fluid was very dark, with only slight first ratio jerking, so there is hope.
If you cannot sort it by changing the fluid, then it will cost you a great deal. If you are in the West Midlands I recommend 'Drivers Transmissions' I think they are still going and are really straight nice guys and will not stiff you.
Good luck with it
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