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Fuel Pump Relay 9434225 Examinations 1998 v70 non turbo

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- 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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MrAl
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Re: Fuel Pump Relay Examinations 1998 v70 non turbo

Post by MrAl »

foggydogg wrote: 31 Oct 2022, 09:38 This is the hardest working device in the electrical system; it is energized from just before startup until the key is back in your pocket. Aside from an academic interest, spending many hours of bench time replacing caps and reflowing joints, then putting a 25 year old relay back in the car, doesn't strike me as progress. The windings on the coils are still 25. The contacts are still 25.
I just bought four from one of the vendors I posted earlier, and have replaced them in each of my cars.
If the original post on the other thread was about getting your car running, this seems to be quite a distraction. My suggestion on that thread was to replace this relay with a new item as a matter of routine maintenance; I consider the piece to be consumable, somewhere between spark plugs and O2 sensors.
Robert goes on several rants in his videos about getting original relays out of any P80 at this point due to age.
Hello,

You MAY have just revealed a crucial piece of information i have been looking for.
Are you saying that the relay coil gets energized just before start of the engine then stays in that state for the entire time that the engine is running? So does that mean that technically it could be replaced with a jumper in an emergency no-start condition on the road somewhere?
The answer to this can be very helpful to me, but you have to be sure.
If that is true though, then what regulates the fuel to the engine if not that fuel pump controller?

I understand what you mean about replacing the relay as it being something like the way you would routinely replace a sensor, but they are getting over $75 on Amazon for one piece. Any ideas there?

Thanks for the reply this could help a lot.
I’ve been driving a Volvo long before anyone ever paid me to drive one.
That's probably because I've been driving one since 2015 and nobody has offered to pay me yet.
1998 v70, non turbo, FWD, base model, on the road from April 2nd, 2015 to July 26, 2023.

scot850
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Post by scot850 »

The OE Stribel part is on FCP Euro for $49.50 with free shipping over $49!

https://www.fcpeuro.com/products/volvo- ... ay-9434225

Neil
2006 V70 2.5T AWD Polestar tune
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Post by foggydogg »

Yes on both earlier questions, a jumper wire with 1/4" male spade lugs is a diagnostic tool.
I think this was mentioned on the other thread.
Avoid URO and ProParts Sweden anything, everything, always.
I bought four from these folks.
https://www.autohausaz.com/pn/9434225
Another vendor
https://www.partsgeek.com/ss/?i=1&ssq=9434225
and
https://www.europartsplus.com/volvo-fue ... 4225-mfg76
But as pointed out earlier, they may charge shipping, FCP won't on this item since it's over the threshold.
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MrAl
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Post by MrAl »

scot850 wrote: 31 Oct 2022, 21:14 The OE Stribel part is on FCP Euro for $49.50 with free shipping over $49!

https://www.fcpeuro.com/products/volvo- ... ay-9434225

Neil
Ok thanks ill check into this. Wish it was a little cheaper though :-)
I’ve been driving a Volvo long before anyone ever paid me to drive one.
That's probably because I've been driving one since 2015 and nobody has offered to pay me yet.
1998 v70, non turbo, FWD, base model, on the road from April 2nd, 2015 to July 26, 2023.

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MrAl
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Post by MrAl »

foggydogg wrote: 31 Oct 2022, 21:59 Yes on both earlier questions, a jumper wire with 1/4" male spade lugs is a diagnostic tool.
I think this was mentioned on the other thread.
Avoid URO and ProParts Sweden anything, everything, always.
I bought four from these folks.
https://www.autohausaz.com/pn/9434225
Another vendor
https://www.partsgeek.com/ss/?i=1&ssq=9434225
and
https://www.europartsplus.com/volvo-fue ... 4225-mfg76
But as pointed out earlier, they may charge shipping, FCP won't on this item since it's over the threshold.
Oh ok thanks.

The thing about the jumper wire, i know it was meant to be used as a diagnostic tool but can you actually drive the car that way, with the jumper installed. That is, say you are 5 miles away from home, could you drive all the way home with that jumper installed?

Thanks.
I’ve been driving a Volvo long before anyone ever paid me to drive one.
That's probably because I've been driving one since 2015 and nobody has offered to pay me yet.
1998 v70, non turbo, FWD, base model, on the road from April 2nd, 2015 to July 26, 2023.

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Post by jreed »

My understanding is that you can drive with the jumper installed for as long as necessary. You will be giving up the safety protection that the relay would provide in the case of an accident or equipment failure.
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Post by foggydogg »

MrAl wrote: 01 Nov 2022, 04:12
foggydogg wrote: 31 Oct 2022, 21:59 Yes on both earlier questions, a jumper wire with 1/4" male spade lugs is a diagnostic tool.
I think this was mentioned on the other thread.
Avoid URO and ProParts Sweden anything, everything, always.
I bought four from these folks.
https://www.autohausaz.com/pn/9434225
Oh ok thanks.

The thing about the jumper wire, i know it was meant to be used as a diagnostic tool but can you actually drive the car that way, with the jumper installed. That is, say you are 5 miles away from home, could you drive all the way home with that jumper installed?

Thanks.
Yes, as noted above. I have a 15A fuse inline on mine.
69 1800s, @500k Death by Rust
94 850 Turbo, T-boned, ambulance for me, crusher for it
97 855 T5, 855 R projects
98 V70R x2, Silver Junkyard rescue, Coral Red
98 V70GLT x2, parts cars
00 V70xc x2, both now dead
62 122s, gone to live in Richmond
56 445 Duett basket project
1950 Studebaker 2R10 flatbed, T9 crashbox

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MrAl
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Post by MrAl »

foggydogg wrote: 01 Nov 2022, 06:35
MrAl wrote: 01 Nov 2022, 04:12
foggydogg wrote: 31 Oct 2022, 21:59 Yes on both earlier questions, a jumper wire with 1/4" male spade lugs is a diagnostic tool.
I think this was mentioned on the other thread.
Avoid URO and ProParts Sweden anything, everything, always.
I bought four from these folks.
https://www.autohausaz.com/pn/9434225
Oh ok thanks.

The thing about the jumper wire, i know it was meant to be used as a diagnostic tool but can you actually drive the car that way, with the jumper installed. That is, say you are 5 miles away from home, could you drive all the way home with that jumper installed?

Thanks.
Yes, as noted above. I have a 15A fuse inline on mine.

Oh ok thanks.

Would you happen to know if when the jumper is in place, does the pump keep running even after the car engine is turned off?

Also, i see that there is a relay they are calling the "Main" relay. That looks like it enables the fuel pump relay.
Would you happen to know where that relay is on the car? Could that be the one marked "1" in the other fuse compartment with the larger fuse sizes?

I was also wondering how they make the key unremovable from the ignition key hole, and also how do they make the shifter lock up. That also happened so i was wondering what they use to do that, maybe a relay or something?

Thanks very much for the info.
I’ve been driving a Volvo long before anyone ever paid me to drive one.
That's probably because I've been driving one since 2015 and nobody has offered to pay me yet.
1998 v70, non turbo, FWD, base model, on the road from April 2nd, 2015 to July 26, 2023.

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Post by foggydogg »

The power is only applied with the key on for that circuit, but with the jumper in place, the pump runs continuously until the key is back at position 0.
The ignition interlock is mechanical, you have several issues going at once here. A sticky button on the shift knob can be a possible cause.
69 1800s, @500k Death by Rust
94 850 Turbo, T-boned, ambulance for me, crusher for it
97 855 T5, 855 R projects
98 V70R x2, Silver Junkyard rescue, Coral Red
98 V70GLT x2, parts cars
00 V70xc x2, both now dead
62 122s, gone to live in Richmond
56 445 Duett basket project
1950 Studebaker 2R10 flatbed, T9 crashbox

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Post by abscate »

You don’t need a fuse in the jumper as the relay does not provide fuse protection to the pump, that happens up stream. An additional fuse does not hurt , though.

Jumping relay at 7:07 in first video by Robert

viewtopic.php?p=492072&hilit=Fuel+pump+ ... re#p492072
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