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Wiper delay modification

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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patcal
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Joined: 12 July 2020
Year and Model: 1998 S70 GLT
Location: Gresham, OR.
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Wiper delay modification

Post by patcal »

So I tried to add the VW relay so I could adjust my intermittent wiper. I bought a relay with the following numbers

#321 9556 531a

While the relay fit the socket, the wipers would do nothing in this position. With this relay I also lost the wiper park feature. Is this the right relay & I just got a bad one? Thanks.
Pat Callaghan Jr.
98 S70 GLT
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Cookeh
Posts: 522
Joined: 14 January 2019
Year and Model: 1996 Volvo 850 T5
Location: Ceredigion, Cymru
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Post by Cookeh »

From a quick Google it seems your relay is number 19, not 99. Whilst both are wiper relays, its 99 you need as only it is the programmable one.

The part number of the 99 relay I put in my car has part number 357955531.
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