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P80 -1998 developing coil failure 1275174

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

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abscate
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P80 -1998 developing coil failure 1275174

Post by abscate »

I’ve been reworking a 1998 NA and ready for its return home to VT.

Last few days, I noticed a slight stumble at idle every 5 minutes or so, maybe a 100-200 rpm drop

Today, a badmisfire above 2000 rpm. Luckily, it does it in the driveway without a load. Idle is smooth, but once revs go up to 2000 or more it’s tough.

I checked distributor cap for oil and gunk and th n swapped in a parts coil , and Earl the 1998 purred and drove smoothly thereafter.

Old coil had about 230k on it
Primary 10 ohms
Secondary 10k ohms
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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scot850
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Re: P80 -1998 developing coil failure 1275174

Post by scot850 »

Great catch! Must be intuitive to an old 'salt' like you by now. Does this mean Earl is heading back home? What a great person you are to get the car back up and running so well. Big 'PAT' on the back from up here!

You know they may not be particularly powerful, but the NA's are beginning to grow on me for there generally robust and much easier maintenance. They also seem to attract a more caring owner through their lives.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - New project and test bed - Sold
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abscate
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Re: P80 -1998 developing coil failure 1275174

Post by abscate »

After the thrashing it gave me in distributor timing, this one felt good.
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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markone
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Re: P80 -1998 developing coil failure 1275174

Post by markone »

"Does this mean Earl is heading back home? What a great person you are to get the car back up and running so well."

I would simply like to echo Neil's sentiment (above). Abscate has been supremely generous with his time and knowledge on this one.
1997 850 Sedan NA, manual trans, 268k miles
1998 V70XC AWD, turbo/auto 165k miles
1998 V70, NA/manual trans, 351k miles
2005 BMW X3 3.0i, auto, 135k miles
2010 Toyota Highlander AWD, 91k miles
2007 Malibu Response LXi, Ebony/white, 340 hp, 330 hours
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abscate
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Posts: 23700
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Year and Model: 99T5 ,99S70,2005V70
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Re: P80 -1998 developing coil failure 1275174

Post by abscate »

Aw, thanks Guys. Ive had so much paid forward to me in life, Ill have to live a long time to repay the karmic bucket.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread
Link To Volvo Glossary
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