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2003 V70 wiring loom

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
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kiwivolvo
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2003 V70 wiring loom

Post by kiwivolvo » Sat Mar 28, 2020 9:14 pm

Hi all, as we are on lockdown here in NZ i have time to do my motor swap, the question I have is I have a different motor, the dismantler said this Is a high pressure turbo motor, do i need the loom from the new motor or can I use the same loom thats in the car thanks.

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darrylrobert
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Re: 2003 V70 wiring loom

Post by darrylrobert » Sat Mar 28, 2020 9:37 pm

Kia ora, is it from the same year model?..Doyou have a whole donar car or just the motor?. i have a 2001 and a 2002xc70 and ive found much of the wiring is the same, but being a different year there are many changes/improvements and you may encounter the need for fun plug/connector/pin swappings. sounds like a fun job
I assume your swapping the ecu from the motor??

kiwivolvo
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Re: 2003 V70 wiring loom

Post by kiwivolvo » Sat Mar 28, 2020 9:37 pm

i just got the motor from the dismantlers with the wiring loom attached

kiwivolvo
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Re: 2003 V70 wiring loom

Post by kiwivolvo » Sat Mar 28, 2020 9:38 pm

the motor looks identical but if i dont have to swap wiring looms over then i wont

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SuperHerman
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Re: 2003 V70 wiring loom

Post by SuperHerman » Sat Mar 28, 2020 10:16 pm

I am no expert, but would suggest you compare block part numbers, intake numbers and most important turbo part numbers. Hopefully the only difference is the turbos. Maybe the only difference is software for the turbos in which case the turbo part numbers should match or cross reference as the same. If the turbos are the only difference I would swap over the old turbos.

Assuming the turbos are different, my fear is the computer in your car is tuned to for the low pressure variant and you will have boost issues with the high pressure version. You will have to do some reading on the subject - I did a quick study and there is plenty out there. It may be possible to retune the computer, but that is a new can of worms.

I have always found the path of least issues is to use as much original as possible - so keep the harness. Where sensors don't mate move them from original motor to the donor. Other approach is to match part numbers and they are a match you can keep the donor ones if it is a newer motor. Keep your original motor or at least strip it of all duplicative parts for spares - one never knows if the donor motor is fully functional or if you will have failures in the future. Keep a note of everything that doesn't match as it will provide clues on differences if you have operational issues.

kiwivolvo
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Re: 2003 V70 wiring loom

Post by kiwivolvo » Sat Mar 28, 2020 10:19 pm

thank you for that, ive found the wiring looms to be identical, hopefully its not a major job to replace wiring looms while the engine is in place.

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RickHaleParker
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Re: 2003 V70 wiring loom

Post by RickHaleParker » Sat Mar 28, 2020 10:31 pm

Would help if you post the VIN numbers of the cars and engine ID numbers oof the engine blocks.
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Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

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SuperHerman
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Re: 2003 V70 wiring loom

Post by SuperHerman » Sun Mar 29, 2020 1:20 pm

RickHaleParker will help you with engine differences - he is one of the forum's masters at compatibility.

Post block numbers, turbo numbers and the VINs for best results.

kiwivolvo
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Re: 2003 V70 wiring loom

Post by kiwivolvo » Sun Apr 05, 2020 8:35 pm

sorry for delay, the original motor was a b5244t3, new motor is b5234t3, im using the turbo off the old one as i only got this motor as a long block, hope this helps

kiwivolvo
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Re: 2003 V70 wiring loom

Post by kiwivolvo » Sun Apr 05, 2020 8:38 pm

VIN YV1SW58K932326926

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