AOD/ DEM quit today

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R

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erikv11
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Re: AOD/ DEM quit today

Post by erikv11 »

Blacklab467 wrote: Tue Jan 05, 2021 7:10 am ... The first part I changed on this car was the fuel pump when it died 5 years ago and it was an aftermarket brand, now I'm wondering if I shouldn't go fish one out at the wreckers for when it dies next! ...
More threadjack: Can you replace the fuel pump on this car from under the rear seats, or is it more involved (e.g. dropping the tank)? Just thinking ahead ...
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k

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Post by vtl »

From under the rear seats.
05 XC70, 16 XC60, 19 Tundra

Blacklab467
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Post by Blacklab467 »

Rear seats, but you have to take a whole bunch of interior stuff out to get to the seat bases as I remember.
2003 XC 70, 2007 Duramax LBZ.

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vtl
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Post by vtl »

Blacklab467 wrote: Tue Jan 05, 2021 11:10 am Rear seats, but you have to take a whole bunch of interior stuff out to get to the seat bases as I remember.
At least you won't see any amateur welds and cut your fingers with sharp edges like you do with Toyota seats =)
05 XC70, 16 XC60, 19 Tundra

Blacklab467
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Post by Blacklab467 »

Well this is strange.......the pump seems to have come back to life on its own! I was planning on putting the Volvo pump in it today but the Dorman started working again about 4 days ago and appears to have fixed itself. I don't really feel like lying on my back in the garage today so I think I'll just leave it until it quits again and keep the Volvo pump on the shelf. I don't quite know whether to be happy or upset at this recent development, ?
2003 XC 70, 2007 Duramax LBZ.

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vtl
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Post by vtl »

You probably need to look at what's inside your DEM. It often lets water in.
05 XC70, 16 XC60, 19 Tundra

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erikv11
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Post by erikv11 »

How's this AOC pump doing? Was really hoping the Dorman could be an option for my 06 ...
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 130k
gone: '96 NA 850 210k, '98 NA V70 182k

Blacklab467
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Post by Blacklab467 »

Strangely enough, by the time my $500 CDN Volvo pump showed up the Dorman was on day 4 of working after not working 1 or 2 days. That was at least 4 weeks ago and it's still running strong! I decided to keep the Volvo as a spare being that the Dorman has a 1 year warranty, it's been in since August. My only guess is that there was a intermittent poor connection or maybe a tiny particle of contaminant that stuck between the slip ring and brushes. It's a low amperage pump and appears to be relatively well made, not much to go wrong with a magnet pump so I'll just leave it in till it fails hard. I really don't have an explanation as to why it quit temporarily. The roads here are icy every day so I can confirm that everything is working well.
2003 XC 70, 2007 Duramax LBZ.

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vtl
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Post by vtl »

Compromised seal in DEM could be an explanation.
05 XC70, 16 XC60, 19 Tundra

cn90
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Post by cn90 »

I have a 2006 BMW 3.0i with xDrive. The BMW xDrive AWD system is much better than Volvo.

My 2005 XC90 2.5T AWD stripped the sleeve, so knowing that the Volvo early-design AWD has so many issues (stripped sleeve, angle gear leaking, the rear electronic DEM etc. etc.), I decided to abandon the idea of fixing the sleeve, installed 4 winter tires and drive the XC90 as FWD + winter tires.

If you must fix the AWD, then by all means have fun fixing it.
If you can live w/o the AWD system, then my suggestion is to drive it as a FWD.
The time you spent fixing this bad engineered AWD system is not even worth it.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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