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2005 V70NAM56 slight miss (early warning of 30769225 Pump Electronic Module (PEM) failure) Topic is solved

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abscate
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2005 V70NAM56 slight miss (early warning of 30769225 Pump Electronic Module (PEM) failure)  Topic is solved

Post by abscate » Tue Oct 24, 2017 11:59 am

On my way out of town I notice my P2 is stumbling a bit between 40-55 mph. I feel distinct intermittant miss

Plugs and coils new, about 5k

I read ecm130A and ecm140A which are MAF and MAP sensor errors pending but not stored.
Empty Nester
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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JRL
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Re: 2005 V70NAM56 slight miss

Post by JRL » Wed Oct 25, 2017 10:44 pm

Proper OEM Denso coils?
2000 V70R Black, 144,000 miles Wife's R.
2007 V70 2.5T White/Oak 111,000 MILES. Polestar tune, IPD bars, rear spoiler, dark grey Thors, DWS 06, HU850, sub.

Contact info for purchases: [email protected]

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abscate
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Re: 2005 V70NAM56 slight miss

Post by abscate » Thu Oct 26, 2017 5:07 am

Yes, could not cheap out on this one. Too nice. Still getting 31 mpg in town

I'll chase it down this weekend. Intermittent miss is almost certainly electrical something
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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Re: 2005 V70NAM56 slight miss

Post by abscate » Sat Oct 28, 2017 4:38 pm

Well, I though I replaced coils but one is dated 2008 and the rest are new

Wtf was my head when I did thAt job?

Update.. test drive this morning and not a single skip miss stumble. I had wiggled coil connectors last night, nothing loose. Not definitive but leaning to a coil or connector issue
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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Re: 2005 V70NAM56 slight miss

Post by JRL » Mon Oct 30, 2017 3:01 pm

Ruining my car again are we?
2000 V70R Black, 144,000 miles Wife's R.
2007 V70 2.5T White/Oak 111,000 MILES. Polestar tune, IPD bars, rear spoiler, dark grey Thors, DWS 06, HU850, sub.

Contact info for purchases: [email protected]

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abscate
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abscate

Re: 2005 V70NAM56 slight miss

Post by abscate » Mon Oct 30, 2017 5:21 pm

Our temps dropped down to 50 which I think cleared this up.
I'll replace the last coil and drive it hard
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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abscate
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abscate

Re: 2005 V70NAM56 slight miss

Post by abscate » Mon Mar 26, 2018 11:53 am

Forgot to close up on this thread. I did replace the coil but the miss never returned, so I was left with that unsatisfied feeling Matt has when he goes to shift gears, and its in D

4 months later I got a no start due to a failed PEM, which almost certainly was the cause of this misfire.

Thread here

viewtopic.php?f=9&t=84169
Empty Nester
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Re: 2005 V70NAM56 slight miss (early warning of PEM failure)

Post by E Showell » Tue Mar 27, 2018 3:57 pm

PEM?
'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)

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Re: 2005 V70NAM56 slight miss (early warning of PEM failure)

Post by E Showell » Tue Mar 27, 2018 3:57 pm

Pointy Egghead Mistake?
'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)

User avatar
abscate
MVS Moderator
Posts: 20545
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
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Trinidad & Tobago
abscate

Re: 2005 V70NAM56 slight miss (early warning of PEM failure)

Post by abscate » Tue Mar 27, 2018 8:19 pm

Pump electronic module. On P2 cars, the fuel pump relay is bonded into the Central Electrinics module , the ECM controls the fuel pump by sending a control signal to the PEM, WHICH SENDS A PULSE MODULATED signal to the fuel pump. The upside is the pump I still only run on demand so it lasts longer.part numbers 8634953 30769225
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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