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Re: EFI and Electronic Ignition Initial Start Up Questions [message #367896 is a reply to message #367887]

Thu, 09 December 2021 10:40

RF_Burns

Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada

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Senior Member

IMPORTANT: Make sure your IGNition power source has power while cranking. Check with a test light to be sure your IGNition power source does have power while cranking, otherwise it will NEVER start.

The ECM controls the operation of the pump through a relay. When you first turn the Ignition key to the ON position, you should hear the fuel pump run for 2-3 seconds to prime the system, then stops. If you don't hear the fuel pump run, then likely it is not running at all, so troubleshoot that first.

There is a timer so if you turn the key OFF then back ON again, the pump may not run again, unless the key has been OFF for a set time. I do not know how long this time is, maybe a minute?? Hopefully someone else knows.

The pump restarts when you crank the engine and runs continuously while the engine is running, but it will stop if the engine stalls. You likely can't hear the pump running while cranking over the starter noise.

I believe the Howell system has a separate fuse in the lead for the fuel pump relay.

My 2017 GMC pickup will run the fuel pump for a few seconds when the driver's door is opened after it has been sitting for a few hours to prime the fuel system.

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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[Message index]

		EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Wed, 08 December 2021 18:46
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Wed, 08 December 2021 20:28
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: jimk on Wed, 08 December 2021 22:43
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 06:48
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: Keith V on Thu, 09 December 2021 10:07
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Thu, 09 December 2021 10:40
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 10:42
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: James Hupy on Thu, 09 December 2021 12:00
		Re: EFI and Electronic Ignition Initial Start Up Questions By: rvanwin on Thu, 09 December 2021 12:30
		Re: EFI and Electronic Ignition Initial Start Up Questions By: rvanwin on Thu, 09 December 2021 12:44
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 13:32
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: Dave Stragand on Thu, 09 December 2021 13:57
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 15:37
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Thu, 09 December 2021 15:56
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: James Hupy on Thu, 09 December 2021 15:59
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 16:57
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: James Hupy on Thu, 09 December 2021 17:08
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 17:48
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Thu, 09 December 2021 18:30
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: jimk on Thu, 09 December 2021 18:21
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 19:02
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Thu, 09 December 2021 19:29
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Thu, 09 December 2021 19:40
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Thu, 09 December 2021 21:00
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Fri, 10 December 2021 08:20
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: sgltrac on Fri, 10 December 2021 10:06
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: jimk on Fri, 10 December 2021 10:08
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Fri, 10 December 2021 10:47
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Fri, 10 December 2021 11:45
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Biggamehunter on Fri, 10 December 2021 13:58
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Fri, 10 December 2021 14:16
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: jimk on Fri, 10 December 2021 17:29
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: sgltrac on Sat, 11 December 2021 01:20
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Biggamehunter on Fri, 10 December 2021 16:35
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Fri, 10 December 2021 18:38
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Sat, 11 December 2021 07:58
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Sat, 11 December 2021 11:00
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Sun, 12 December 2021 08:42
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Sat, 11 December 2021 13:45
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: jimk on Sat, 11 December 2021 13:52
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: jimk on Sat, 11 December 2021 13:52
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Sat, 11 December 2021 14:17
		Re: EFI and Electronic Ignition Initial Start Up Questions By: kingd on Sat, 11 December 2021 17:27
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Bill Van Vlack on Sat, 11 December 2021 18:43
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: James Hupy on Sat, 11 December 2021 18:35
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Sat, 11 December 2021 19:51
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Sat, 11 December 2021 19:54
		[GMCnet] Re: EFI and Electronic Ignition Initial Start Up Questions By: James Hupy on Sat, 11 December 2021 19:58
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Sat, 11 December 2021 22:13
		Re: EFI and Electronic Ignition Initial Start Up Questions By: RF_Burns on Sun, 12 December 2021 08:31
		Re: EFI and Electronic Ignition Initial Start Up Questions By: Tom Katzenberger on Sun, 12 December 2021 12:27
		Re: EFI and Electronic Ignition Initial Start Up Questions By: jhbridges on Sun, 12 December 2021 17:28

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