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Replaced main relay - 1999 V70 XC AWD 2.4T

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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wizechatmgr
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Joined: 12 January 2017
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
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Replaced main relay - 1999 V70 XC AWD 2.4T

Post by wizechatmgr »

I started getting random cut-outs after that alternator went and took out the headlights. I figured since the relay was rather old it was likely the issue. Odds are it didn't appreciate the surge and likely AC voltages.



Part ($10) was sourced from Amazon since I already had an order in. The Volvo relay is $22 if you decide to take that route.

Orig was Hella 4RA 003 510-75 AKA Volvo 9128164 - date code 418.

Old one will sit in my car's glove box just in case this one isn't up to the challenge. I didn't disassemble the new one but the old one had a diode across the coil - but not protecting the coil.

Next thing on the to-do list - figure out the malfunction of the cig lighter up by the gear selector. The one in the back works, this one doesn't. In/under/near the gear selector I believe there is either a bad micro-switch or a bad bulb as it doesn't always light up when it should.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD 2.4 T -- ~231k miles
1998 V70 2.4 NA -- ~184k miles

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