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1997 850, low idle then quits.

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

BuckDanger
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Year and Model: 1997 850 se
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BuckDanger

1997 850, low idle then quits.

Post by BuckDanger » Sun Apr 30, 2017 6:01 pm

My Volvo has had off and on trouble. It will run flawlessly some days, other days just quit on me. It tends to happen on really wet days or for longer distances. If I keep it moving and keep the rpms around 2000 - 3000 it is fine. When we come to a stop light, or start to go slower, it will start to chug and jolt before the rpms plummet under 1000 and it just shuts off. If we let it sit we can get it back on, but again if we go slow or come to a stop it's off. (Sometimes putting it in neutral works until I can get it moving again) any ideas?

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erikv11
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Joined: Sat Jul 25, 2009 2:03 pm
Year and Model: 850, S/V70, 06 S60R
Location: Iowa
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erikv11

Re: 1997 850, low idle then quits.

Post by erikv11 » Sun Apr 30, 2017 6:33 pm

Stumbles at low idle are often due to vacuum leaks. If the thin rubber vacuum lines have not been updated, they are now 20 years old and mostly crumbling. I would start by checking for vacuum leaks, use visual inspection and/or the starter-fluid method. Or just replace them all, one at a time, it si not that much work and gives you a good tour of the engine bay!
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 285k
'06 S60 R, 165k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

cn90
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Year and Model: 2004 V70 2.5T
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cn90

Re: 1997 850, low idle then quits.

Post by cn90 » Sun Apr 30, 2017 8:42 pm

Also, check service records.
- Spark Plugs
- Cap/Rotor
- Bougicord etc. etc.

Search forum for brand names etc.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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