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1999 S70r poor running MVSolved - bad ground

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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Matty Moo
Posts: 1810
Joined: 12 October 2008
Year and Model: 850, 1996
Location: Ann Arbor, MI
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Re: 99 S70r motor stuck!

Post by Matty Moo »

Is it the stc or SRS light?
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1996 850 Platinum Wagon. ARD Green Tune, OBX.-Gone
1998 s70 ARD tune, EST exhaust, SE/R interior.
1999 s70 Plain Jane.
2000 s70 GLT
2014 Ram
2012 Jeep Wrangler Unlimited

b2fkb0
Posts: 105
Joined: 13 September 2010
Year and Model: V70r,855r,s70t5m,xc
Location: Kalamazoo, MI
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Post by b2fkb0 »

Stc and the ets lit. I have an srs lit as well but that's been on for a while. The tach jumps to 1500 on start up but then goes to zero after 10 seconds. I cleaned the ground wire very well and tested the voltage through it and it appears to be good. I'm thinking of inspecting my etm wire for possible problems. I put new loom covers on those wires that had crumbling going on; maybe I did something during that install. What sensor(s) drives the tach signal on a 99? Thanks!
Dan

b2fkb0
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Year and Model: V70r,855r,s70t5m,xc
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Post by b2fkb0 »

The cars running well!


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matthew1  
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Year and Model: 850 T5, 1997
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Post by matthew1 »

Outstanding! What a sweet ride. That engine is CLEAN. Great work, b2.
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1998 V70, no dash lights on

1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace

2004 V70 R [gone]

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b2fkb0
Posts: 105
Joined: 13 September 2010
Year and Model: V70r,855r,s70t5m,xc
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Post by b2fkb0 »

Thanks Matt! Yeah it was a diamond in the rough with only 126k. The body was clean (no damage) but the tranny had burnt fluid. That was why it was in the yard. I like a clean engine bay so I put some work on it before dropping it in. Sure nice to drive it again!
Dan

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