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98 V70M erratic gauges

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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jgasn
Posts: 6
Joined: 28 December 2010
Year and Model: 1998 V70 5M
Location: NZ

98 V70M erratic gauges

Post by jgasn »

Hi, any ideas on why my instrument gauges become erratic as the day temps start going up. All good first thing in the morning.
Coolant, fuel, speedo and tacho go berserk
Thanks
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erikv11
Posts: 11800
Joined: 25 July 2009
Year and Model: 850, V70, S60R, XC70
Location: Iowa
Has thanked: 292 times
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Post by erikv11 »

Could be the electrical portion of the ignition switch is failing, has that ever been replaced?
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k
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jgasn
Posts: 6
Joined: 28 December 2010
Year and Model: 1998 V70 5M
Location: NZ

Post by jgasn »

Not as far as I know, second owner for past 12 years. Is it an easy repair if it is...
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dustyou
Posts: 5
Joined: 24 December 2017
Year and Model: 98 s70
Location: Missouri
Has thanked: 1 time

Post by dustyou »

Check camshaft position sensor plug and tap it while running.
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