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1999 T5V70M56 road incident report, misfiring [ bad #2 coil]

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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CIK7
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Year and Model: 1998 Volvo V70 XC
Location: Oklahoma
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CIK7

Re: 1999 T5V70M56 road incident report, misfiring [ bad #2 coil]

Post by CIK7 » Sun Nov 10, 2019 6:41 am

abscate wrote:
Fri Oct 11, 2019 4:17 am
Preamble, mileage on car 239748

I thought I detected rough running for the last two week at startup and cold idle, but after 60 seconds idle was smooth, so I took no action. I did check #3 plug and found it at 0.032 with some tip wear, and meant to compare it to new, plugs have 24k on them, Volvo OEM style. Coils estimated to be 80k miles, OEM Bosch

Leaving downtown ROCHESTER, two hours after a long drive, I had a missing cylinder, low power, and bad exhaust smell. It cleared after 5 minutes of driving to my next destination. I then headed out 490 towards Buffalo, and the miss returned with a CEL.

The incident

I was able to reach my ObD in the glove box and read codes, and had two...P0352 #2 coil primary failure and #2 misfire P0302

The repair

I pulled over, T25 for cover, M6 for coil screw, spare coil from parts kit, installed and miss cleared. I will test today on the drive home.

Waze told me instead of being 15 minutes early to my next destination, I was now only 8 minutes early. I lost one minute saying hello to the guy who pulled over to help in the first 30 seconds. It’s A Buffalo thing.

Analysis
Relatively early coil failure. I will order a replacement but have to think about replacing other four coils. This same repair on the GW would suck.
Is this that car you were referring to when you said 'eron' on my part donation post?


1998 V70 XC (selling electric driver seat, PM me)

Future upgrades: 18T, Versatility CC visuals, T5R paint/rims, logo/badge delete excl grille

If you have a 98-00 V70, interested in getting 'interior remodeling' ideas, PM me. I used software to design some woodwork I want to refit my XC with. Satin nickel on dark walnut with shag.

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abscate
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abscate

Re: 1999 T5V70M56 road incident report, misfiring [ bad #2 coil]

Post by abscate » Sun Nov 10, 2019 11:50 am

My Enron stock ?

:)

I have a 1998 that I need to pull the motor and trans this fall before year end. I can’t get to the motor mount parts until I get the big pieces off. I think Thanksgiving week will be earliest I can get to it.


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

User avatar
CIK7
Posts: 147
Joined: Mon Jan 14, 2019 8:15 am
Year and Model: 1998 Volvo V70 XC
Location: Oklahoma
Has thanked: 25 times
Been thanked: 1 time
United States of America
CIK7

Re: 1999 T5V70M56 road incident report, misfiring [ bad #2 coil]

Post by CIK7 » Sun Nov 10, 2019 4:23 pm

abscate wrote:
Sun Nov 10, 2019 11:50 am
My Enron stock ?

:)

I have a 1998 that I need to pull the motor and trans this fall before year end. I can’t get to the motor mount parts until I get the big pieces off. I think Thanksgiving week will be earliest I can get to it.
Ok I see what you mean. Thank you.


1998 V70 XC (selling electric driver seat, PM me)

Future upgrades: 18T, Versatility CC visuals, T5R paint/rims, logo/badge delete excl grille

If you have a 98-00 V70, interested in getting 'interior remodeling' ideas, PM me. I used software to design some woodwork I want to refit my XC with. Satin nickel on dark walnut with shag.

User avatar
abscate
MVS Moderator
Posts: 18952
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 222 times
Been thanked: 739 times
Trinidad & Tobago
abscate

Re: 1999 T5V70M56 road incident report, misfiring [ bad #2 coil]

Post by abscate » Tue Nov 12, 2019 10:44 pm

Yes wcm got the horns that day. By kicking us back into pure diagnostic mode, we figured out the failures were unrelated

Moving the bad component moved the P030x code

The spark plugs were replaced a week after the coil failure, and ran fine for another week after


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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