Hi everyone, At first I thought this was a minor issue, but after additional headaches I thought I might ask here for some help. Short backstory, 99 V70 2.4T AWD, about 140000km/86000 miles. The check engine light/CEL started to come on sporadically a month ago, in combination with some starting iss...

Did the safest thing and got the trans rebuilt, did cost a fair bit but also came with a 2y/50000km guarantee. Many thanks for everyone who responded. The V70 is running great again!

Final update: got the car to an auto trans specialist who replaced a faulty 4th gear assembly. Car is running fine again!

Whoops, yeah I made a mistake. The 850 was available in AWD but not with an auto nor as a T5. The seller of the trans was not sure about the 850 being either a T5 or AWD then from what he told me. Good thing I didnt buy the trans at asking price then. I am considering bringing the original trans to ...

Thanks Neil. Could you clarify what you meant with "not being sure if FWD and AWD outputs can be used on an AWD car"? The 850 T5 and my V70 both have AWD and turbo engines but I am aware of the electronic differences as mentioned above. And yes I am planning on running the AWD, since the g...

I wasn't planning on swapping ECMs, just the transmission unit itself, not planning on touching the TCM or ECM if I can't help it. In the meantime I read another MVS post concerning the difficulties of pre-1999 and post-1999 AW50 problems: https://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&a...

But isn't the TCM and ECM seperate from the trans and engine and contained on the side of the engine bay? The transmission itself dosen't have the TCM installed internally so if I would swap out the old and install the new trans the TCM of the original gearbox should be managing it...

Hi, I am looking to replace the automatic transmission in my 1999 Volvo V70 2.4T AWD (Engine model B5244T). After prolonged trans fluid draining there was still fine metallic parts present in the oil and the OBDII was throwing up an ECM-530D and unfortunately a TCM-002B error code. I found another A...

No, the first oil flush just showed the usual darkened trans oil but no metal as far as I or the garage could tell. Do faulty solenoids have a tendency to fail when the trans comes up to temp? That might explain why, after the first garage, we had no problem driving on normal roads but then again pr...

Update: A small-ish Volvo garage near the pick up location did a transmission flush and I tried to translate to them the process described by Neil, however I am not 100% sure they exactly followed it but they did run it up in between the different flush stages - anyways, afterwards we ran the car an...