problem out of nowhere - The 1947 - Present Chevrolet & GMC Truck Message Board Network

menace121978 · 10-06-2010, 11:39 PM

hey guys, why would the fuel pump relay start clicking as soon as the ignition is turned to on? it just started doing this. and when it does it she wont start. it is intermittent. seems like 90% of the time its doing it! i've checked the wiring and relay and everything seems right. very frustrating. any ideas and/opinions? thanks, Dennis

BR3W CITY · 10-07-2010, 08:51 AM

might sound dumb but have you thrown a new relay in yet? Sounds to me like something internally went wrong and its chattering the contractors on/off. For the cost of a relay its worth a try.
That or your powersource/wiring isn't maintaining enough voltage to the relay to keep it in the correct state (energized or not energized)

menace121978 · 10-07-2010, 11:16 PM

thanks for the input buddy but i think i got it

embarrassed to say but i think it was the gas pedal wasn't hooked up to the tac module. its weird that sometimes it would start though.

10-06-2010, 11:39 PM	#1
menace121978 Registered User Join Date: Jan 2009 Location: orangevale, ca Posts: 3,626	problem out of nowhere hey guys, why would the fuel pump relay start clicking as soon as the ignition is turned to on? it just started doing this. and when it does it she wont start. it is intermittent. seems like 90% of the time its doing it! i've checked the wiring and relay and everything seems right. very frustrating. any ideas and/opinions? thanks, Dennis __________________ "Dennis the Menace" 1978 Silverado (2wd, 1/2 ton, short bed)complete nut & bolt frame off restomod LQ9/4L80E MY LS SWAP/FRAME OFF BUILD BOOK 2006 TBSS way too much to list

10-07-2010, 08:51 AM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: problem out of nowhere might sound dumb but have you thrown a new relay in yet? Sounds to me like something internally went wrong and its chattering the contractors on/off. For the cost of a relay its worth a try. That or your powersource/wiring isn't maintaining enough voltage to the relay to keep it in the correct state (energized or not energized) __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

10-07-2010, 11:16 PM	#3
menace121978 Registered User Join Date: Jan 2009 Location: orangevale, ca Posts: 3,626	Re: problem out of nowhere thanks for the input buddy but i think i got it embarrassed to say but i think it was the gas pedal wasn't hooked up to the tac module. its weird that sometimes it would start though. __________________ "Dennis the Menace" 1978 Silverado (2wd, 1/2 ton, short bed)complete nut & bolt frame off restomod LQ9/4L80E MY LS SWAP/FRAME OFF BUILD BOOK 2006 TBSS way too much to list



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