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99 V70 P0137 replaced sensor still low

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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donis222
Posts: 41
Joined: 2 February 2013
Year and Model: S70 T5 1998
Location: 95811

Re: 99 V70 P0137 replaced sensor still low

Post by donis222 »

Returned again low voltage rear. The real problem was that I didn't tighten the O2 sensor enough. This allowed O2 to enter at certain speeds. Dah

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