[J-Ri]

Originally Posted by ibbygibbie

I have checked all fuses and relays and I am stuck....I have no power getting back to the fuel pump...I pulled the relay under hood in the fuse box and am getting power to just one post...Was running fine and then tried to start and just cranks...What am I missing....What color wire should have power running back to the fuel pump(there are three)....Thanks

the relay should have power to two terminals. One should always have power, one should have power when the computer wants the pump to run (priming and cranking/running). The pump will run for about two seconds after turning the key on, then shuts off. Have someone crank the truck for you and check for power to the other terminals with a voltmeter. Using a test light can overload the output from the computer. Check the other two terminals for continuity with ground. They should be zero ohms.

A quick check for a bad fuel pump is to pound on the bottom of the tank with a deadblow hammer or a rubber mallet while cranking. If it starts then, the problem is either a bad fuel pump or a loose wire on top of the tank.