2003 Ford Bronco Won't Start - Fuel System


Question: Last week my 1990 Bronco with a 5.8L would not start right up. It eventually did start after about 1 minute of pumping the gas. It ran ok the rest of the day and started the rest of the week allthough it seemed to take a little longer. Today it will not start at all and I do not hear the fuel pump run when I turn the key on. What is the most likely cause? The pump itself or a fuse, relay? Thanks Mike

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Technican: Do you hear the other usual noises when you turn the key on. IE, relays clicking underhood? The first things to check is for spark to the plugs. Also does the check engine light come on when you first turn the key on, as it normally does?
Owner: I do hear all the normal bells and whistles and the check engine light does come on. I do have spark the only thing that is missing is the buzz of the fuel pump. I think I found the fuse link (on the pasanger side fender well) but I am not sure how to check it.
Technican: This is a 1990 and not a 2003... To test a fusible link use an ohm meter. See if there is continuity through the fusible link. OR, with power on see if there is voltage on both sides of the link. A trick that sometimes will work is to hit the bottom of the gas tank several times with a rubber mallet. This may get the pump to run again. If it does the pump is the problem and needs to be replaced. Don't trust it! Otherwise you have to see if 12 volts (battery voltage) is present to the fuel pump connector with the engine cranking. If it is present the fuel pump needs replacing. If you don't have a repair manual- Edit, Copy, and Paste this link into your adress bar. It should helpful. www1.autozone.com/servlet/UiBroker?UseCase=RG001&UserAction=beginRepairGuide

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