2.8l engine, auto trans., throttle body injection. there is a wire running from the junction block on the firewall to the starter relay with a 30 amp fuse inline. once every week this fuse blows. the starter and engine turns but fuel line will not pressurize when the fuse goes. what could cause this phenomena?
1) your fuel pump is drawing excessive current. in which case you need a new fuel pump.
2) or the wiring to the fuel pump is damaged and a bare wire is touching the frame at times. this would have to be an intermittant trouble. visually inspect the wiring for damage. tug on it to see if you can make the fuse blow.
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