Which fuel pump relay?

  • Thread starter Thread starter Scott Kelley
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Scott Kelley

I am putting an electric fuel pump into an older car & want to use a fuel
pump relay that will sense when the engine quits and shut off the pump. I
know that with early fuel injection systems, many vehicles had this type
of relay.

I also want to use a relay for which I can get a corresponding socket, and I
know that many Volvos had the fuel pump relay in a socket under the dash, so
that has led me in the direction of a Volvo as the donor vehicle.

Looking on ebay, I see a number of different Volvo fuel pump relays. My
suspicion is that, if any, only the early relays will have the built-in
electronics to run the pump when the key is first turned on, and to keep the
relay energized as long as pulses are sensed from the ignition. Anybody
know whether that is the case, and if so, which relay I should look for?

Thx
Scott Kelley
 
My old -86 240 with the mecanical CI-system had the relay your looking for.
So my guess is to find an older car with the CI. Probably mid 70's to
mid-80's.
In Europe the CI system hanged on to the introduction of the catalytic
converter in late-88.
But AFAIK the US spec cars got the electronic fuel injection much earlier;
someone here can probably clear this out.

If I remember correct, the relay was blue or green in color, with 6 electric
connectors aranged in 2 rows like this:
_ _ _
_ _ _

Good luck.

Per Mathisen
-88 780 w/SBC 350 TPI
 
Per said:
My old -86 240 with the mecanical CI-system had the relay your looking for.
So my guess is to find an older car with the CI. Probably mid 70's to
mid-80's.
In Europe the CI system hanged on to the introduction of the catalytic
converter in late-88.
But AFAIK the US spec cars got the electronic fuel injection much earlier;
someone here can probably clear this out.

If I remember correct, the relay was blue or green in color, with 6 electric
connectors aranged in 2 rows like this:
_ _ _
_ _ _

Good luck.

Per Mathisen
-88 780 w/SBC 350 TPI
Click to expand...

From the 1978 model year the cars with K-Jetronic injection had this
relay. The last K-Jet 240 was 1982 in the US, and 1983 in Canada (the
760 GLE used this relay up to 1986, but not mounted on the end of an
easy to cut harness).
You can recognize K-Jet cars by the injectors that don't have any
electrical connections to them.

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
Thanks guys - so now all I need is the wiring diagram . . . Do you know if
there is something available on-line?
SK
 
Scott said:
Thanks guys - so now all I need is the wiring diagram . . . Do you know if
there is something available on-line?
SK
Click to expand...

Try this:
http://tinyurl.com/2dwbvb

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
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