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odometer is working intermittently

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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Clemens  
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Year and Model: 96 855 R + 94 855 T5
Location: Austria
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Re: odometer is working intermittently

Post by Clemens »

misha wrote: 17 Jul 2021, 13:36 Odometer on 850 have nothing to do with abs...as long as speedometer works.

If speedo is working intermittently along with odometer...that would be the sign of bad abs module or abs sensors.

Do you have abs/tracs light ON when engine is running?
Sorry to oppose, but on my 96 the speedo works, but the odometer only works intermittently. The ABS/Tracs lights are on, so the module is probably the culprit.
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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misha
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Year and Model: '97 850 2.5 20v
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Post by misha »

He doesn't have abs/tracs light ON.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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Chuck W
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Year and Model: 97 854 T5
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Post by Chuck W »

I'm going to go with a bad gear in the odo. It's a known failure.

One bad tooth in the wrong or right location can cause the odo to work sometimes and not others.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.

The Others- '83 TBird turbo, '85 Mercury Marquis LTS (1 of 134), '86 LTD Wagon, '81 Granada GL, '76 Beetle, '93 F-150 I6

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