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1995 850 Engine died while driving, slow cranking

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Jaybar
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Year and Model: 95,97 850
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Re: 1995 850 Engine died while driving, slow cranking

Post by Jaybar » Wed Aug 01, 2018 9:14 am

Check voltage at Battery lowest should be 13.8 if lower Robert DIY can show the trick I learned by soldering red line on the battery it worked perfect.

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RickHaleParker
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Re: 1995 850 Engine died while driving, slow cranking

Post by RickHaleParker » Wed Aug 01, 2018 11:43 am

13.8V is a charging voltage from the alternator, if the battery is fully charged it will drop to 12.7 -12.8.
Open circuit ~12.73V = 100% SoC (State of Charge).
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

Jaybar
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Year and Model: 95,97 850
Location: Manchester,NH
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Re: 1995 850 Engine died while driving, slow cranking

Post by Jaybar » Fri Aug 03, 2018 10:17 am

Good to know when I had that problem voltage at battery was 11.7 and I opted with the soldering trick.

nautalter
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Year and Model: 1995 850 & 1985 360
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Re: 1995 850 Engine died while driving, slow cranking

Post by nautalter » Mon Aug 06, 2018 10:00 pm

Ok, new negative cable installed on Saturday, a slight improvement, New positive cable from terminal to starter lug on Sunday and it sounded better. The battery was on a charger over night but it never got started. It did fire up once or twice but that was it. New battery purchased yesterday, same one as before, now just over a year old. Installed this morning and not much of an improvement.
Back to the head scratching event.

dj_v70
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Re: 1995 850 Engine died while driving, slow cranking

Post by dj_v70 » Wed Aug 08, 2018 3:47 pm

You should check voltage between cable at starter and ground at starter specifically while cranking. I suspect that you don’t have 12.6v.

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