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Old 12-18-2015, 03:39 PM   #4
Plus T
Board Member
Join Date: Sep 2015
Location: Philly

2. Locate fuel pump relay. Remove cover. Turn key on and watch contacts. The FIRST contact should close with key on and STAY closed. This is power for the computer system. SECOND contact is for the fuel pumps. It may/may not prime with key on. CRANK ENGINE. SECOND contact should close and also STAY CLOSED. If it doesn’t, you may not have a crank signal. Check hall effect sensor or crankshaft sensor. If the first contact EVER pops open with the key on, time for a new relay. Also check for corrosion at fuse panel and also at fuse at battery (if equipped)
I dont understand. How can you tell if the contacts in the fuel pump relay are opening/ closing? Do you have to take apart the relay and look inside it?
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