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What is a fuel injection impulse relay? 700 1989

posted by  Nmaslan on  Wed May 11 16:03 CST 2005
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last visit: Fri Dec 30 18:34 CST 2011
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I was flipping through the wiring diagrams for an 89 740 in my blue Haynes trying to figure what relay (picture below - not THE relay but similar) I have in front of my left strut tower.

One of the wire to the relay is connected to the starter and following the diagram one of the wiring from the starter goes to a fuel injection impulse relay. This is separate from the fuel pump relay as it has a different ID no in the diagram.

Any ideas what it is? I have a B230E k-jetronic and the wiring diagram wasn't that all clear to which engine it was referring to.

Thanks







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What is a fuel injection impulse relay? 700 1989

uid 18083's pic
posted by  lucid on  Thu May 12 00:37 CST 2005
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last visit: Fri Oct 24 12:31 CST 2014
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It's a relay used on turbos to help "Warm Starts" by pulsing the Cold Start Injector during cranking.
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.







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