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No Start or Crank (I'm pretty much confused) Topic is solved

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S70GUY
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Post by S70GUY »

I'll describe this as briefly as possible: I have a strange problem with my car and I don't know what it is, It's already giving me a headache and I don't know exactly what to do about it.
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Problem I have
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Live Data using a OBDII Scanner

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misha
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Post by misha »

Engine is cranking but cranking is weak.
Not enough power to start the engine.
I would say that battery is almost flat since odometer & trip readout is blank(------).

'99 & '00 needs a healthy battery voltage to start and run since they have DIS(distributorless) system.
11.9v is flat battery.

Try to jump start it or put a good battery.
When we rule that out...then you need to inspect battery cables for voltage drop.
2010 S80 D5 / restyling / fully equipped / Twin turbo / Savile Gray Metallic (492)

History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon

S70GUY
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Post by S70GUY »

The blank odometer and trip is due to the abs module I have (it's bad) also I put the battery to charge all night, goin to check it rn

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misha
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Post by misha »

You should have total mileage displayed in upper row and 0.0 in lower row if it's because of bad abs module...since mileage is stored in the cluster not abs module.
You can power up the cluster on the bench and it will always display total mileage stored in the cluster.
Total mileage folows the cluster...not the car.
2010 S80 D5 / restyling / fully equipped / Twin turbo / Savile Gray Metallic (492)

History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon

yanga001
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Post by yanga001 »

misha wrote: 08 Jun 2025, 02:32 Engine is cranking but cranking is weak.
Not enough power to start the engine.
I would say that battery is almost flat since odometer & trip readout is blank(------).

'99 & '00 needs a healthy battery voltage to start and run since they have DIS(distributorless) system.
11.9v is flat battery.

Try to jump start it or put a good battery.
When we rule that out...then you need to inspect battery cables for voltage drop.
I agree with what misha is saying here. The 99 and 00 need more power and will have a no crank no start issue.

A bad (low capacity battery) can cause this issue too. Had this happen when my battery dropped to 50% capacity over time. The car refused to crank/start but would have enough power to show the display.
1998 S70 N/A Auto (Parts car)(planned to be harvested)
1998 V70 N/A Auto New full restoration project (Water pump thrown at 404K Km)
1998 V70 N/A Auto (Workhorse) (Tree to driver B pillar :( )
1999 S70 T5 Auto(Project) (planned to be fixed)
2000 S70 SE M Learning platform (planned to be driven one day)
2008 S60 2.5T Auto (Sold)
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S70GUY
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Post by S70GUY »

The problem is, the battery is new from store (it's been on the car for at least 4 or 5 months)

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misha
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Post by misha »

That doesn't matter....the battery shows voltage of 11.9v.That is flat battery.
Full battery must read 12.7-12.8v.
12.2v is 50% charge.
battery_voltage_chart.jpg
battery_voltage_chart.jpg (45.24 KiB) Viewed 1162 times
2010 S80 D5 / restyling / fully equipped / Twin turbo / Savile Gray Metallic (492)

History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon

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volvolugnut
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Post by volvolugnut »

If the electrical charging system is not right, the battery will lost charge (go flat) over time. Even as few months old battery will lose charge unless charged by the alternator system.
volvolugnut
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scot850
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Post by scot850 »

Have the battery professionally tested. It sounds like the battery has a bad cell in it. Once replaced/recharged, have the charging system checked for efficiency. Old battery leads with bad resistance or corroded/loose/broken grounds are also an issue to check.

If the battery continues to drain, check for a parasitic drain (something not switching off when you remove the key and lock the car).

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
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S70GUY
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Post by S70GUY »

Thanks for the advice, going to check rn

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