![]() ![]() Someone tells me it could be a sticky solenoid, someone else tells me it's the valve block, someone else tells me it's the clutch that's worn (but then why does it grip on full power when I press right down more slowly?). It seems that something in the system is "sluggish" and can't keep up with a quick demand for clutch grip when "flooring it". However, here's the mystery: If you press the accelerator down more slowly, for instance take a couple of seconds to feed the power up to full power, you get no slip at all. It seems that the lockup clutch is slipping, it's very similar to when a manual gearbox clutch is slipping/worn and you get that nasty clutch judder. It only happens when the lockup is engaged, never when it isn't. Ease off the accelerator a little and it all settles down. Problem as follows: Put it in say, D4 or D5 after the torque converter lockup clutch is activated and floor the accelerator right away and you get a nasty juddering with the revs going up more than they should. (When I say "D" I mean I manually select the gear with the geartronic shift). At first it only happened in D5 but now it does it in D4 and even slightly in D3. However in the last couple of years a fault has begun to creep in. Volvo D5 Auto with engine remap - haven't been driving it like and idiot but occasionally get a smile from putting it in D3 and blowing past the traffic. Either way, a tranny on a 53 plate car could do with a flush & fresh fluid if not done so already despite what Volvo call "sealed for life" If your box is slipping or appearing to do so then either the valve chest is crudded or a clutch pack could be on its way out. When the box was repaired by a Local auto specialist, he steadfastly said that anti-slip additives should not be used in the AW box in any circumstance & that the JWS3309 ATF should be the only thing in there.Īfter that episode I left well alone & am wary of any "wunder" additives. I had problems in the past on my last V70 and a local garage used an additive in the box, it was a death knell. The use of additives in an AW50-55SN gearbox will only speed up the demise of your gearbox. PLEASE DONT USE ANY ADDITIVE IN YOUR GEARBOX!!!!!! ![]() fingers crossed.ītw, found this user review at on a s60. although i have to say driving to cornwall and back on the same day in extreme wet conditions would be a good test even for brand new cars.Īnyways i'll post up a report when the gearbox really suffers. So my guess is based on the numerous reviews posted on the internet, i might give the fluid a go as a drastic measure when the gearbox begins to misbehave again. on the subject of "magical additive", when i had a slightly stuck turbo a while back caused by previous owner not attacking the throttle very well, i put in some forte diesel turbo cleaner and the engine service light never came up again. Yah and the best thing is labour's really not bad for london. guess i won't risk it until the gear changes become really bad. The user review seems pretty positive as well. Polymetric Film Renews Worn Bands to Stop SlippingĬompatible with all transmissions and transmission fluidsĪ Perfect Preventative Maintenance Product Stops Slip, Leaks, Hard Shifting : Renews Worn Transmission FluidĬleans and Lubricates Sticking Valves For Proper Shifting Here's some product info i copied off amazon. I'll refrain from adding the unknown substance into the transmission for now as no one here seem to have had any experience with the product. Took it down to brighton and back today, no problem so far and it seems that the gear changes are a little smoother now, probably because the throttle response matches my style of driving more now. The guys did advise a software update which was available, but i was told that the box will still probably fail eventually. the garage in question is braydon motors in north London and they've been servicing volvo and saab cars since the 70s. ![]()
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