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ecm fuel pump

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

mclem1940
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Joined: Sat Apr 11, 2020 1:52 pm
Year and Model: 2004 c70
Location: angle,utah
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mclem1940

ecm fuel pump

Post by mclem1940 » Sat Apr 11, 2020 2:00 pm

I swapped out the ecm on my c70 .it will not run at all.The fuel pump does not have power to it or the relay.fuse is good,my car would start , run then die.the donor car ran well.any ideas?

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misha
Posts: 4318
Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
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misha

Re: ecm fuel pump

Post by misha » Sat Apr 11, 2020 2:35 pm

The car would start and die...but fuel pump have no power to it?!

How does it start then?!

Now.....2004 have CAN network and you can't just swap the ecu.Ecu and other modules are "married" to the car.
It needs to be re-programmed to match the car.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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

mclem1940
Posts: 2
Joined: Sat Apr 11, 2020 1:52 pm
Year and Model: 2004 c70
Location: angle,utah
Has thanked: 0
Been thanked: 0
United States of America
mclem1940

Re: ecm fuel pump

Post by mclem1940 » Sat Apr 11, 2020 6:27 pm

is that a factory job?

User avatar
misha
Posts: 4318
Joined: Sun Dec 07, 2008 4:09 pm
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 56 times
Been thanked: 134 times
Serbia
misha

Re: ecm fuel pump

Post by misha » Sun Apr 12, 2020 3:23 am

Volvo authorised dealer job.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
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

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