240 General: Fuel pump regulator/relay issue

[Shagginwagon245]

Hello All, to preface this question I would like to say that I have never really owned a volvo before. Anyways, I am going to be purchasing a 1980 Volvo 245. The car can run, but only when the fuel pump regulator is activated by hand. The owner put in a new fuel pump relay, but it still will not activate. Does anyone know what the issue could be?

[Stephen Edwin]

A good choice for a shaggin woagon.

The 245 will carry a three foot wide bed in the load area. A mattress without a base would allow more room for artistry ...

I have no idea what a fuel pump regulator might be. I expect someone will be able to help you.




Sorry pal. Your choice of ID just begged for a shaggin reply. But relax, this is a serious supportive website. Someone will have a practical Volvo mechanics answer for you.

.

[Shagginwagon245]

Thanks Stephen, thought the name suits the 245 quite well. Hopefully I will get a point in the right direction!

[Paul240480]

Also check fuses. I think its fuse 6 for the fuel pump, this often causes issues as later plastic fuses tend to melt down! Originally they were ceramic. Sometimes just a 'wiggle' of the fuse will suffice to get them going, but obiously a temp 'fix'.

Fuel pump relay for fuel injected models. Being a 1980 I guess itll be a k-jet injected (mechanical injection).
Fuel pump relay is situated behind the glove box. Easiest access is to remove the glove box. Just 8 screws and pull the hole thing out. You can get to it by reaching under the dash on side too.....
Mechanical injected relays should be green. Later EFI ones had a white one. So check it has the correct replacement.

Have a look at this thread: In particular post 6 by Clifford which explains how to temporarily by-pass the relay 'forcing' the fuel pump to run This could be a tell-tale' for you

http://www.volvoforums.org.uk/showthread.php?t=119073

[Shagginwagon245]

Thank you so much! That was a help. I'll take a look at this post. I cannot wait to get my wagon.

[Clan]

Originally Posted by Shagginwagon245

Hello All, to preface this question I would like to say that I have never really owned a volvo before. Anyways, I am going to be purchasing a 1980 Volvo 245. The car can run, but only when the fuel pump regulator is activated by hand. The owner put in a new fuel pump relay, but it still will not activate. Does anyone know what the issue could be?

did he fit the correct GREEN relay ? The white one won't work
The Green relay needs pulses down the red/white wire from the coil to close and run the fuel pump ... it needs an ignition live , and earth and a constant live i believe from memory .

[rtbcomp]

Here's a comparison on the two types

early

Fuel Pump Wiring 1986.jpg

later

Fuel Pump Wiring 1992.jpg

[Clan]

Originally Posted by rtbcomp

Here's a comparison on the two types

early

Attachment 95887

later

Attachment 95888

My memory isnt that bad then :-)

[Bugjam1999]

Here's a load of info, including instructions on how to wire in an additional relay to take some load off the original -which are prone to failure because of overloading. Always carry a spare!

http://www.davebarton.com/volvorelays.html

[Shagginwagon245]

Thanks much for the info guys. I'll tell you what I find out when I pick the vehicle up