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Jeep Wagoneer Fuel System


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afronator3000
New User

Jul 5, 2009, 6:11 PM

Post #1 of 3 (1826 views)
Jeep Wagoneer Fuel System Sign In

My 1990 Jeep Wagoneer 4.0L cranks well when I start it but the car won't start. At first I believed the battery was too low so I charged it overnight; the next day the starter was fast but wasn't able to ignite. When I checked the fuel bleeder valve gas came out at first but only for a second. So should there be pressure in the fuel system when the key is in the on position?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 5, 2009, 9:08 PM

Post #2 of 3 (1819 views)
Re: Jeep Wagoneer Fuel System Sign In

The pump should run for 2 seconds when the key is first turned on and then run again when the computer sees a tach signal from cranking. Bad fuel pumps are very common



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Guest
Anonymous Poster

Jul 7, 2009, 6:15 AM

Post #3 of 3 (1806 views)
Re: Jeep Wagoneer Fuel System Sign In

Thanks hammertime. I ended up pulling a few relay switches out and dusting them off and that did the trick, at least for the time being.. nice vett btw






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