[SOLVED] 2006 XC70 D5 185 Fault codes and power loss

[Joe Harding]

I fitted a second hand MAF. Tried cleaning the one that came out but no change. The second hand one worked until the car was scrapped.

[matmatmat]

Quick update on this:

Parts arrived for a new linkage as well as the Reely part from Conrad. Long story short, fixing the swirl flap arm has cleared all of those fault codes and Service Required light, as well as solving the loss of turbo.

Thanks to Stuart Bowes for the suggestions, I ordered some rod ends, and strut parts for an RC car separately to make a new arm. Rod ends are M3, plus 20mm M3 studs and 20mm M3 internal threaded spacers:



Here it is assembled, next to the Reely part. The quality difference in the bearings was considerable so I went with the self built option:



Finally, here it is installed:



It took a little it of extra work compared to the YouTube video example I originally posted. Mainly due to the fact that the actuating arm on the motor didn't appear removable as that example was. So I took out the whole motor and very sensitively cut and drilled the metal ball. The plastic did crack a little but after an araldite fix, it seems to be pretty strong. I'll keep an eye on it though.

After replacing this and re-scanning with VIDA, the fault codes for the MAF, turbo and swirl flaps are all gone. Taken for a test drive (town speeds only) and no more loss of power - everything feels good all the way up at take off etc. Starting engine when cold is also much faster and initial cold idle much smoother.

I was initially getting a new code of the swirl flap motor jamming when doing the adaptation through VIDA but it appears to have full range of motion end to end. I adjusted the length of the arm and it seems to have solved it intermittently but will check again after a longer drive this weekend. The callipers said it was 80mm hole centres on the arm as per the original. It could also be the bolt head on the butterfly is fouling on the engine casing (it's pretty gunky in there) or worst case I've damaged the actual motor when modifying the arm. I'll dig further soon.

Now that's out of the way, I've just got the other error codes of faulty internal air quality sensor, faulty ignition key light (this one is ridiculous!) and faulty A/C. But I'm quite happy to leave those indefinitely.

Moved on to some cosmetic work - plastidipped the grill / wheels / emblems and used some Gtechniq C4 Trim Restorer on the faded plastic bumpers, wiper arms, mirrors etc. I was sceptical (£20 for 15ml...) but it's worked extremely well and was more than enough to do the whole car's worth of plastics:

[stuart bowes]

looking good

I was tempted the trim restorer as well but in the end I just resprayed it all. probably worked out more effort in the end because I had to do a lot of masking up.. but both ways work

[matmatmat]

Originally Posted by stuart bowes

looking good

I was tempted the trim restorer as well but in the end I just resprayed it all. probably worked out more effort in the end because I had to do a lot of masking up.. but both ways work

Absolutely, the other option I was thinking was plastidipping them all matte black but for the effort of masking / spraying + cost, I wanted to give this a try first. Plus there's a crack on the nearside front corner and shaved wheel arch so would want to get that fixed first. Previous owner managed to hit something in the two days between me viewing it and picking it up - I made the mistake of not re-checking.

It's still on my to-do list under 'things I don't need or shouldn't spend money on' to spray dip either them or the whole car - I've seen some photos of XC70s with body matched trim and they look.... interesting. I don't know why this car is urging me to live out some teenage boy racer fantasies.

[davebb]

Hi your trim now looks great
my trim has gone very bad with whitish places , would this Gtechniq C4 Trim Restorer work on mine, how was yours before you used it,
Thanks Dave

[matmatmat]

Originally Posted by davebb

Hi your trim now looks great
my trim has gone very bad with whitish places , would this Gtechniq C4 Trim Restorer work on mine, how was yours before you used it,
Thanks Dave

It's definitely worked out well so far and based on my experience, I'd recommend it for sure. There are YouTube videos that do a good job of showing the process but essentially, a couple of drops on a cotton wool pad or other small polishing pad. Rub it in, then buff off with a microfibre.

I don't have many but here's a before photo:



And what it looked like this weekend after a few hundred miles in rain etc:

[stuart bowes]

Still looking good but it's weird.. possibly just cos I'm used to looking at mine, those bump strips on the doors being body coloured looks wrong to me.. personally I think I'd paint them to match all the other black stuff but each to their own I suppose

If I'm bored later I might have to photoshop it and see

Maybe it'd be too much black.. it is just personal preference obviously

[matmatmat]

Originally Posted by stuart bowes

Still looking good but it's weird.. possibly just cos I'm used to looking at mine, those bump strips on the doors being body coloured looks wrong to me.. personally I think I'd paint them to match all the other black stuff but each to their own I suppose

If I'm bored later I might have to photoshop it and see

Maybe it'd be too much black.. it is just personal preference obviously

You know, I was thinking the same thing. I've seen some painted up to the bump strips as well to keep everything black below that line - kind of recreating this:



Then again, seeing the XC70 go in the other direction of body coloured trim is also a tempting project for the future. Not in the XC spirit but...:

[stuart bowes]

I'm not sure I get the point of the last one, it looks nice but why not just buy a V70 if you want a pure on-road styling

seems a bit long winded to get a jacked up one and then lower it

it is tidy though don't get me wrong