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1998 V70 No Power at Fuel Pump Connector

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, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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ScaleAutoArt
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Joined: Sat Feb 08, 2014 4:51 pm
Year and Model: 1998 V70
Location: United States

1998 V70 No Power at Fuel Pump Connector

Post by ScaleAutoArt »

I thought my fuel pump died but I am not getting any power at the connector [black and red].

What should I go back and check?

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erikv11
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Post by erikv11 »

Almost certainly the fuel pump relay, relay #103, has gone out. You can test this idea by jumpering the relay with a paper clip, which should restore power back at the connector.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 135k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k

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erikv11
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Post by erikv11 »

Check this out, it includes all you need to know and more:

https://www.matthewsvolvosite.com/forums ... hp?t=52252
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 135k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k

ScaleAutoArt
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Joined: Sat Feb 08, 2014 4:51 pm
Year and Model: 1998 V70
Location: United States

Post by ScaleAutoArt »

I have already tried the jumper with a copper wire...no go. Anywhere else I should check...fuses look good.

cn90
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Post by cn90 »

If you jump #15 and #87 with no result, then you need to go upstream of #15.

Review the diagram below (taken from the link I wrote above).

1. Turn key to position II, you should have 12V at #15 socket (at fuel pump relay socket).
If not...

2. Go to Main Relay FI System relay.
There should be 12V at #30.
Jump 30 and 87 at Main Relay FI System relay socket, leave the jumper in 15 and 87 (fuel relay socket).
If car runs, then the Main Relay FI System relay is bad.

3. Lastly, it may be bad ignition switch, the electrical portion of it.


Image


Image
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

ScaleAutoArt
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Joined: Sat Feb 08, 2014 4:51 pm
Year and Model: 1998 V70
Location: United States

Post by ScaleAutoArt »

OK...I have power at the pump when I jump the relay...but not when the relay is in place. But still no life from the pump. Completely dead.

Is it just a coincidence that the relay and pump are dead?????

Need to know before I go and order the parts!

Ozark Lee
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Post by Ozark Lee »

The fuel pump relay has a time delay. It runs the fuel pump for a couple of seconds when the key goes to position II before the engine starts but after the engine is running it is on full time. If you turn the key on to position II and then go back to check the meter it will have timed out if the meter isn't oriented so that you can see it from the driver's seat.

It would be unusual for the fuel pump and the fuel pump relay to fail simultaneously unless the fuel pump relay started to chatter and the fuel pump was on the edge anyway.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

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erikv11
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Post by erikv11 »

Are you aware that when the relay is in place, when you turn the key to position II power goes to the pump for only a few seconds? So you have to have the meter up there in the driver's seat (e.g.), or have someone else turning the key. If you didn't know that you could be easily fooled into thinking the relay is bad.

EDIT: what Lee said.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 V70, T5 tune-injectors-turbo, LPT engine, 293k
'06 S60 R, 167k
'07 XC70, 170k
'99 Camry V6 :shock: 135k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k

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BEJinFbk
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Post by BEJinFbk »

ScaleAutoArt wrote:OK...I have power at the pump when I jump the relay...but not when the relay is in place. But still no life from the pump. Completely dead.

Is it just a coincidence that the relay and pump are dead?????

Need to know before I go and order the parts!
It could happen. If the pump seized and started to draw
more current than usual, it could affect the relay contacts.
'98 V70 R - Well Equipped for Life Up North... ;)

ScaleAutoArt
Posts: 22
Joined: Sat Feb 08, 2014 4:51 pm
Year and Model: 1998 V70
Location: United States

Post by ScaleAutoArt »

Ozark Lee wrote:The fuel pump relay has a time delay. It runs the fuel pump for a couple of seconds when the key goes to position II before the engine starts but after the engine is running it is on full time. If you turn the key on to position II and then go back to check the meter it will have timed out if the meter isn't oriented so that you can see it from the driver's seat.

...Lee
Thanks Lee...got it. Had the Wife turn it on while I was in the back. Got a signal for a few seconds. Relay is good, pump is dead ;)

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