Engine: 2.5: - 1999 V70 Will ECUs stop a like for like Engine & Auto Swap?

CNGBiFuel · Aug 30th, 2021, 00:19

B5244S 1999 V70 1999 V70 - Will ECUs stop a like for like Engine & Auto Swap?

We're about to undertake a like-for-like engine & auto gearbox swap from one 1999 V70 car to an identical car. Identical or not, some things will stop this for sure, ie we know the ETM can't move from the donor car, those are coded to the ECU. Without VADIS to make things work, each ETM needs to stay with each car.

We're moving the autobox too. We're quiet frightend the sparky bits won't play with each other, eg: is the box coded to its own transmission ECU?

Identical cars, B5244S 1999 V70 Denso sparks, donor is same year, same variant, same box etc. What else stops this being a simple spanner-job?

Both cars are V70 NA B5244S
AW55-50/51SN

SwissXC90 · Aug 30th, 2021, 08:05

If identical cars, then keep the electronics from your car, and only move the mechanicals from donor car to your car.

CNGBiFuel · Aug 30th, 2021, 09:12

Of course, move only mechanical parts, that'd be the general idea - that's at the root of this question.

Is it really that simple or workable? Is there not something, buried in say the transmission, that means we're forced to stay with the existing box and can't move the donor box across with the donor engine?

Aug 30th, 2021, 00:19	#1
CNGBiFuel Classic P80 1999 BiFuel Last Online: Mar 6th, 2024 00:34 Join Date: Aug 2012 Location: 48mph Middle Lane M4	1999 V70 Will ECUs stop a like for like Engine & Auto Swap? B5244S 1999 V70 1999 V70 - Will ECUs stop a like for like Engine & Auto Swap? We're about to undertake a like-for-like engine & auto gearbox swap from one 1999 V70 car to an identical car. Identical or not, some things will stop this for sure, ie we know the ETM can't move from the donor car, those are coded to the ECU. Without VADIS to make things work, each ETM needs to stay with each car. We're moving the autobox too. We're quiet frightend the sparky bits won't play with each other, eg: is the box coded to its own transmission ECU? Identical cars, B5244S 1999 V70 Denso sparks, donor is same year, same variant, same box etc. What else stops this being a simple spanner-job? Both cars are V70 NA B5244S AW55-50/51SN __________________ Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl*dy blah."] Last edited by CNGBiFuel; Aug 30th, 2021 at 00:29.*

Aug 30th, 2021, 08:05	#2
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	If identical cars, then keep the electronics from your car, and only move the mechanicals from donor car to your car. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.

Aug 30th, 2021, 09:12	#3
CNGBiFuel Classic P80 1999 BiFuel Last Online: Mar 6th, 2024 00:34 Join Date: Aug 2012 Location: 48mph Middle Lane M4	Of course, move only mechanical parts, that'd be the general idea - that's at the root of this question. Is it really that simple or workable? Is there not something, buried in say the transmission, that means we're forced to stay with the existing box and can't move the donor box across with the donor engine? __________________ Bifuel V70 Classic 1999 [The Old Grumpy in the Corner, "When I was a lad... blah, bl*dy blah."] Last edited by CNGBiFuel; Aug 30th, 2021 at 09:25.*

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