Very cool project! I'm working currently on a similar one. Have some additional sensors in my XC90 (D5244T, P2, 2003) like oil pressure, coolant pressure etc. For my project I'm using a custom PCB that I designed. It is compact and sits directly on the OBD-II port. The schematic is build on @vtl's &...

More stories from my grab bag XC90 (2003 D5 AWD D5244T); Just a week before my general inspection (TÜV here in germany) was due, the ABS light came on. Reading the error codes with VIDA, it did show "BCM-0139 Pre-pressure valve power brake booster signal outside permitted range". The car ...

The error code P0477 usually means a broken/stuck EVAP purge valve.
Replacing is straight forward and done in 5 minutes (on most vehicles).
A new one costs around 50-80 bucks. But first check if not just the connector is corroded or dirty.

At first: very interesting! This might come handy form me soon! I did use d5t5 to add 2 new keys (but not remotes) to my 2003 xc90. With remote, do you mean the fob to remotely lock/unlock the car? Are you trying to lock the car whilst with a key in the ignition? Don't really understand (english isn...

If you want, I can take a look (electrical engineer here).
Maybe reflowing the solder joints will fix the problem.
I repaired my instrument cluster which also had problems (2003 XC90).
And germany aint that far from the UK

If the in my previous post mentions specs are correct, this is the diagram for your engine. The part number 9125243 is correct. This valve was used til '99, after that it changed, see parts under number 19 in the parts list. There seems to be a replacement for your valve with the part number 8631285...

For that price you can get a used but working flex tube. If you know someone with a welder, cutting the old one out and welding the new one in is like 30 minutes of work. I dont know much about inspection in the US, but here in germany this would never pass. These heat wraps arent air tight, so it w...

misha wrote: ↑01 Feb 2024, 03:31 Wierd.
What is actual ambient temperature reading on board computer display?
Is it the same -40F like ecu sees it?

Texasbrainstew wrote: ↑31 Jan 2024, 13:56 Dang ECU is now reading that the ambient air temp sensor is showing -40°f.

My instrument cluster is reading the temperature correctly.

Hey folks! Took me a while to dig the internet for some of the wiring diagrams for P2 platform. Maybe these will help you guys and girls also. If I find more, I'll edit the post. Also feel free to share your collection! Here I have also uploaded P3 wiring diagrams: https://www.matthewsvolvosite.com/...

Continuing from my P2 wiring diagrams thead https://www.matthewsvolvosite.com/forums/viewtopic.php?p=641218 , here are some P3 diagrams: Feel free to share yours, if you have some, that I haven't listed! 2007 - wiring diagram - V70 V70R XC70 XC90.pdf 2008 - supplement wiring diagram - V70 (08-) XC70...