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'04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

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E Showell
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E Showell

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by E Showell » Sun Jun 14, 2020 5:43 pm

Ok, so replaced throttle body with junkyard unit. The one that came off the car had part # ending in "53" so FCP's contention I need a "54" appears to be incorrect.

After replacing throttle body idle still lumpy. Sought to do a "TB adaptation" but I must have VIDA Lite because nowhere did I see that as an option.

And, codes getting very much worse. New ones today:

CEM 1A61 Communication with TCM control module signal missing

ECM 510F vehicle speed signal - signal missing

ECM 530B malfunction indicator lamp communication

ECM 91B7 throttle valve -faulty signal

Any ideas?

Just to recap:. New Bosch coils (5) less than 5,000 miles ago. New Volvo turbo plugs, same vintage. New MAF this past Friday (Bosch). Junkyard throttle body (cleaned to spotless) today.

Battery voltage could be a little low since only getting used for short runs.

Interesting: frozen values from initial readout:. "Ambient temperature -107.5 °C." Frozen values, I'll say.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

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abscate
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Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by abscate » Mon Jun 15, 2020 5:52 am

Okay, noodling on this one.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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E Showell
Posts: 3133
Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
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E Showell

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by E Showell » Mon Jun 15, 2020 8:30 am

Could this be a reprise of Sergio's epic failing starter and compromised flex plate thread? Haven't detected any loud booms so far.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

User avatar
E Showell
Posts: 3133
Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
Location: Long Valley, N.J.
Has thanked: 20 times
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United States of America
E Showell

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by E Showell » Mon Jun 15, 2020 3:31 pm

The plot thickens. Just put a multimeter on the battery in the car, while connected to the car. Resting voltage reads 12.26 V.

Which, as I understand it, is an expired battery.

Next stop, battery charger.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

User avatar
abscate
MVS Moderator
Posts: 21460
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 333 times
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Trinidad & Tobago
abscate

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by abscate » Mon Jun 15, 2020 6:54 pm

Low at 70 degrees F or more

24 hours on the big charger , please
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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E Showell
Posts: 3133
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E Showell

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by E Showell » Mon Jun 15, 2020 8:13 pm

Well, I guess it's really about 55% charge, but lower than I like to see. Five year old Interstate "Megatron" 60 month battery. Not sure of the rated amp hours or CCA.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

User avatar
abscate
MVS Moderator
Posts: 21460
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 333 times
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Trinidad & Tobago
abscate

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by abscate » Tue Jun 16, 2020 4:04 am

E Showell wrote:
Mon Jun 15, 2020 8:13 pm
Well, I guess it's really about 55% charge, but lower than I like to see. Five year old Interstate "Megatron" 60 month battery. Not sure of the rated amp hours or CCA.
You caught the Covid “ I can make this battery last “ bug from some one you met with recently

( my 2013 T5 battery is cranking low , too.)

:lol:
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
E Showell
Posts: 3133
Joined: Thu Oct 16, 2008 4:00 pm
Year and Model: V70R '06 AWD Auto
Location: Long Valley, N.J.
Has thanked: 20 times
Been thanked: 70 times
United States of America
E Showell

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by E Showell » Tue Jun 16, 2020 5:56 am

Ordered a CTek MX5 smart charger and tester. We'll see if the smart charger can help the dumb owner.
'98 V70 NA FWD 5 spd, silver sand metallic (sold)
'99 V70 NA FWD Auto, dark blue (actively for sale)
'99 S70 NA FWD Auto, black (sold and resurrected -- Don't cry for me Argentina . . . )
'07 S80 3.2 FWD Auto, Barents Blue Metallic
'06 V70 R AWD Auto, Sonic Blue Metallic
'04 XC70 Ruby Red Metallic
'95 855 auto (sold)
'86 245 manual (sold)
'05 V70 T5 M (totalled)
'06 V70 FWD Auto (totalled)

chrism
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Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by chrism » Tue Jun 16, 2020 7:43 am

Your fault codes seem to be all over the map. Have you tried re-seating the ECM yet?

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abscate
MVS Moderator
Posts: 21460
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
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abscate

Re: '04 XC Engine Misfiring-Further Updated (Moisture ruled out - possible defective coils, bad MAF)

Post by abscate » Tue Jun 16, 2020 7:46 am

Just remembered. The 2004 has a TSB for water intrusion into the CEM. Have you had that mod done?

Researching...looks like it’s 2005 MY issue only.
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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