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Fuel Injector Relay

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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FinallyGotThatVolvo
Posts: 16
Joined: 30 May 2016
Year and Model: 1994 850 Turbo
Location: California Desert

Fuel Injector Relay

Post by FinallyGotThatVolvo »

Hello Everyone,

I've been having issues with starting and stalling. I believe I've isolated my issues to my fuel injector relay.
Long story short, I've replaced my fuel injector relay and noticed that one of the wires connecting to the relay was loose. The wire was loose and came out hence giving me the issue of stalling and other starting issues.
Two questions,
1. Is there a silicone or rubber type connector that fits inside the relay connector that would replace the current decaying ones. When I pulled the rest out to check the condition the connectors have disintegrated.
2. Does anyone have a wiring diagram for the fuel relay injector?

As always, any help is appreciated, thank you.
1994 Volvo 850 Turbo
It's new to me!

tryingbe
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Post by tryingbe »

The connector is not available anywhere.

I use 4 of this *on the left* and added some wires to make my own connector.

Image
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scot850  
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Post by scot850 »

Other option would be to go to a boneyard and cut out what you need and connect it in.

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
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
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Ozark Lee
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Post by Ozark Lee »

You are not the first to have that problem. The connector is poorly located and highly exposed. I don't think I have ever had the relay actually go bad but the connector is one of the most problematic on the car.

...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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sleddriver
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Post by sleddriver »

You may find what you're looking for here:
http://volvowiringdiagrams.com/?dir=vol ... 20Diagrams
1998 V70 T5 226,808 miles. Original Owner.
M1 10W-30 HM

FinallyGotThatVolvo
Posts: 16
Joined: 30 May 2016
Year and Model: 1994 850 Turbo
Location: California Desert

Post by FinallyGotThatVolvo »

Hey everyone,

Just wanted to say thanks for the help.
I ended up chopping out the fuel injector relay and splicing it into my car.
It now runs normally, although at first it was loud as it wanted to be, maybe due to sitting for a few weeks.
Back to driving it for a while, once again thanks for the help!
1994 Volvo 850 Turbo
It's new to me!

kahl
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Post by kahl »

Could you post a picture of the relay location and damaged wires. I have not heard of this issue. Thanks!!

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erikv11
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Post by erikv11 »

This one does not have damaged wires, but it gives you the location.

The gray FI relay usually lives up under the shelf above the radiator, it has been pulled out in this pic. Note the 4 loose wires leading to its connector.

Image
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

kahl
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Post by kahl »

Ahhh, thank you sir!!!!

Aggnizzab
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Post by Aggnizzab »

tryingbe wrote: 04 Aug 2016, 23:10 The connector is not available anywhere.

I use 4 of this *on the left* and added some wires to make my own connector.

Image
Just wondering could you post the way you did this? And what gauge wires did you use or did you trim the old ones and install these?

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