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Marco's 2003 V70 T5 journey

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

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Fri Jun 14, 2019 6:39 pm

HOWEVER, there’s a jolly great clunk taking up drive, and between selecting reverse and drive (and vice versa).
I think I will investigate the inner CV joints.


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Wed Jun 19, 2019 4:18 pm

The car was on a hoist today for it’s annual safety check which it passed with flying colours. I knew it had an aftermarket rear exhaust silencer, but now I can see it has a TME stainless cat-back system. No wonder it sounds so lush!

Before the safety I knew I had to fix the left turn signal which was very intermittent. I just pulled the stalk switch, and blasted some contact cleaner in there and put some more tension on the contact wipers. Good as new!

Also no issues with inner CV joints. I think the clunk is just diff backlash. It seems to have enough to make it clunk, but other than that, it’s not noisy so I will cease to worry about it.

Also I can confirm absolutely zero oil leaks! Nothing. A first for me and 5 cylinder Volvos.


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Thu Jun 20, 2019 1:26 am

I have again removed the upper tailgate trim. Infuriatingly, it will not stay attached and rattles like mad within a few kilometres of fitting. All of the mounting lugs and clips are in pristine condition, and there are no cracks anywhere.

Any tips? I fear I shall go mad...


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Tue Jul 09, 2019 9:17 pm

Ok, so I was hoping the throttle body would be filthy, thereby easily explaining my erratic throttle behaviour. Nope.
33AEB29E-C93E-4E99-B3EC-7286AE43B4F7.jpeg
Also cleaned the MAF, put it all back together and we’ll see where we go from here.
You do not have the required permissions to view the files attached to this post.


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

precopster
Posts: 7449
Joined: Sat Aug 21, 2010 12:20 am
Year and Model: Lots
Location: Melbourne Australia
Has thanked: 4 times
Been thanked: 98 times
Australia
precopster

Re: Marco's 2003 V70 T5 journey

Post by precopster » Wed Jul 10, 2019 2:10 am

There's a replacement loom for those throttles sold by both XeModex and Volvo dealers. Perhaps try one?!

https://xemodex.com/us/product/repair-h ... -body-etb/


Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Tue Jul 16, 2019 9:15 pm

precopster wrote:
Wed Jul 10, 2019 2:10 am
There's a replacement loom for those throttles sold by both XeModex and Volvo dealers. Perhaps try one?!

https://xemodex.com/us/product/repair-h ... -body-etb/
Looks like a PITA to install. Thanks for the link.


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Tue Jul 16, 2019 9:20 pm

Today I disconnected the MAF to see what would happen. It has way more power and response and less jerkiness at low throttle. A bit hairy at high boost, but I kind of expected that with disconnected MAF. The untrained wouldn’t even notice a difference except for the CEL it’s about to throw... Funny, because my old 850R wouldn’t even idle properly with the MAF unplugged.


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Sat Aug 10, 2019 2:29 am

Investigations have continued. My best mechanic friend was visiting and we set to trying to diagnose what’s going on. Much easier being able to concentrate on driving while a knowledgeable person studies the data. By disconnecting and blanking various hoses we managed to get a better idea of what is happening with boost, airflow, throttle position. Finally we disconnected the wastegate and carefully allowed it to free boost, which it really didn’t do, but we think we know why! What’s happening is boost is leaking (you can hear it) and we think we’ve narrowed it down to the compressor bypass valve. I’m pretty confident the erratic throttle behaviour is due to the ecu trying to iron out boost spikes and leaks. I have just received a new bypass valve rebuild kit from IPD, and hopefully I can install it this coming week. Wish me luck!


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

Marcobrick
Posts: 323
Joined: Tue Sep 28, 2010 9:44 pm
Year and Model: 2003 V70T5
Location: Christchurch,New Zealand
Has thanked: 3 times
Been thanked: 0
New Zealand
Marcobrick

Re: Marco's 2003 V70 T5 journey

Post by Marcobrick » Mon Aug 12, 2019 6:01 pm

New bypass valve fitted today. It’s the second time I’ve done that job on one of these, and man what a pain to get the bolts started when refitting!

Reconnected the battery, went for a drive and....nope. Still not enough boost, surging etc. Next I’ll go through all the vacuum lines AGAIN.


The Fleet:
2003 V70 T5
2014 Nissan Leaf
1973 Fiat 125
1970 MGB GT
Previously:
1996 850R sedan
1994 850T5 Sedan
1995 850 Turbo Wagon
1998 V70T5

Favourite line: "How hard can it be?"

User avatar
abscate
MVS Moderator
Posts: 18402
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 208 times
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Trinidad & Tobago
abscate

Re: Marco's 2003 V70 T5 journey

Post by abscate » Tue Aug 13, 2019 3:30 am

Those M6 bypass bolts are hell. What’s even worse is when you get them in, and then you look down and realize the rubber diaphragm fell out before you slipped the cap back on.


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

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