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02-18-2014, 03:57 PM | #1 | |
AF Newbie
Join Date: Feb 2014
Location: Grand Junction, Colorado
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Starts up for 5 min, then dies and wont start again
My 1999 Yukon will start up, run for about 5 minutes at idle then die. Then it will not start again till the next day.
I hooked up a fuel pressure gauge to the fuel line at the fuel filter. It started up, and the pressure gauge went up to 54. I gave it some gas and pressure goes up to about 60 then back to 54 at idle. I sat and watched it for a bit then it died after about 5 minutes and the gauge went below 50 to about 48. I immediately tried to start again and the pressure actually drops a little while cranking to 45 and stayed there. Whats weird is when I first started it up, I can hear the pump come on and it kicked the pressure up from 0 to 54. Then after dieing, I don't think I can hear the pump come on, and the pressure does not go up at all. I have a feeling tomorrow it will do the same thing, start up after sitting for awhile, then die after 5 minutes. Does this sound like a fuel pump going bad? or does it sound like an electrical issue with the fuel pump? Thank you |
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02-18-2014, 07:53 PM | #2 | |
A990 racer
Join Date: Mar 2002
Location: Chestertown, New York
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Re: Starts up for 5 min, then dies and wont start again
Fuel pressure needs to be at leat 60psi.
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