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'98 S70 T5 Bad Alternator. Voltage Regulator?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

SleeStak69
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Joined: Sat Jul 16, 2016 8:35 pm
Year and Model: 1998 S70 T5 5MT
Location: Washington State
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SleeStak69

'98 S70 T5 Bad Alternator. Voltage Regulator?

Post by SleeStak69 » Mon Jan 09, 2017 6:47 pm

(Voltage Regulator) I watched this video after having a bad alternator confirmed by a test done at O'reillys. My only concern is that my alternator SMELLS bad and also makes a noise when I start the car up cold for about 10 seconds. Could it still be the regulator or will I have to shell out for the big money big project for a whole new alternator?
Pewter Silver Metalic 1998 S70 T5 5 Speed 8)

Herb Goltz
Posts: 124
Joined: Wed Jun 15, 2011 8:47 am
Year and Model: V70 2000
Location: Aurora, ON, Canada
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Herb Goltz

Re: '98 S70 T5 Bad Alternator. Voltage Regulator?

Post by Herb Goltz » Tue Jan 10, 2017 7:46 am

If it smells bad and makes noise you need a complete rebuild, not just a voltage regulator. Look for a local place that does rebuilds-- the parts store rebuilds are hit or miss...

SleeStak69
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Year and Model: 1998 S70 T5 5MT
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SleeStak69

Re: '98 S70 T5 Bad Alternator. Voltage Regulator?

Post by SleeStak69 » Tue Jan 10, 2017 9:59 am

That is what I was thinking would be the case
Pewter Silver Metalic 1998 S70 T5 5 Speed 8)

jenkinskg
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Joined: Fri Jul 03, 2015 9:24 pm
Year and Model: 04 c70 hpt 98 s70 xc
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jenkinskg

Re: '98 S70 T5 Bad Alternator. Voltage Regulator?

Post by jenkinskg » Sun Jan 22, 2017 2:14 pm

So on my 04 c70 rebuild on the car is possible, but not fun, I did this since removing alternator is a not so fun task, mine was running low voltage 13.3 or lower so I put it off for a while. Here is what I did on car
The attched video allowed me to see what screws are needed to be removed.
A right angle screw driver will help with access.
I had to lossen the cooling fan and remove some inter-cooler hoses and lower rock guard.
I was able to not drain antifreeze or pull serpentine belt.
Sorry I did not make a video.

The regulator cost me $31 last year, price has come down, so I have original alternator, not a chinese autozone alternator for $31

here is same ebay seller and current listing for regulator with new brushes.

http://www.ebay.com/itm/VOLVO-Voltage-R ... SwZd1VasA1

The only shorcut I too was I left off the plastic cover off of the rear, its screw was the hardest of all of them.
2004 c70 2.3HPT, s60 2.5T

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bmdubya1198
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Year and Model: 2K V70R M56
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bmdubya1198

Re: '98 S70 T5 Bad Alternator. Voltage Regulator?

Post by bmdubya1198 » Sun Jan 22, 2017 4:33 pm

If it's just the voltage regulator, it wouldn't smell bad. The bearings are probably shot... time for a new alternator.
2000 V70R Venetian Red/Charcoal M56 Swapped 195k
2003 S60 2.4T Silver/Black 112k
2007 XC90 V8 AWD Sport Titanium Grey/Black 166k
1991 944 Turbo Dark Green/Beige 173k
1992 245 Base White/Beige 249k
2006 BMW 330i
1999 BMW 528i
Sold-
2000 S70 GLT Mystic Silver/Taupe 253k
1993 944 Base Beige/Beige 221k
1998 V70 GLT Black/Beige 199k
1998 S90- Silver/Gray 207k
1995 850 GLT Tropic Green... crushed
2001 S60 2.4T Black/Black 230k
1988 744 Turbo M46 Beige Metallic/Beige 188k

jenkinskg
Posts: 235
Joined: Fri Jul 03, 2015 9:24 pm
Year and Model: 04 c70 hpt 98 s70 xc
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jenkinskg

Re: '98 S70 T5 Bad Alternator. Voltage Regulator?

Post by jenkinskg » Thu Jan 26, 2017 9:05 am

Blown diodes can smell, or burt regulator.
Electronics smell when overloaded or dead
2004 c70 2.3HPT, s60 2.5T

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