924Board.org

[924-UK]

My car starts without any issues however I have seen so many posts about the fuel pump priming when you turn the ignition on (but not cranking).

My car has never done this. I have removed the fuel pump relay (see attached) and it looks good to me.

Just wondering why this might be?


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'84 924 2.0 NA

[Beartooth]

I've got the same relay, and mine doesn't cycle the pumps with the key on. As far as I can tell, it doesn't do anything until it gets the ignition signal (pulls off the coil circuit), and it shuts off a second or two after the ignition stops - I can hear the pump run momentarily when I shut if off. My Mercedes with KE-jet cycles the pumps when you turn the key on - if you just turn the key to run, you can hear them come on for a few seconds, then stop. I think that was common to KE-jet cars, but I don't know if any K-jet cars had that logic built into them.
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1980 931 diamond in the rough

[924-UK]

Thanks, I watched a YT video with a 924 the same year as mine and his did not prime either.

Yeah, I can hear mine run for a split second after I finish cranking.

As I said, it starts on the button now.
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'84 924 2.0 NA