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Search Auto Parts Search 93 chevy 5.7 eats fuel pump relays Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Automotive Wiring and Electrical shads Novice Apr 2, 2007, 12:08 PM Post #1 of 3 (2573 views) 93 chevy 5.7 eats fuel pump relays Sign In My 93 Chevy 5.7 pickup is going through alot of fuel pump relays. Every 5 to 7 months the engine will stall without warning. When I scan it for codes it comes back with a code #54, low voltage at fuel pump relay. I have used both AC delco relays as well as aftermarket relays. After the truck stalls it will start again most of the time. If not I replace the relay and I'm good to go until it stalls again months down the road. I've had the truck for 6 years. Help! (This post was edited by shads on Apr 2, 2007, 12:11 PM) steve01832 Veteran Apr 3, 2007, 4:04 AM Post #2 of 3 (2569 views) Re: 93 chevy 5.7 eats fuel pump relays Sign In If you have an old relay, open it and look at the contacts. Check to see if they are burned out. The only thing I can see is the pump is drawing excessive amperage and burning them out. Change the fuel filter and see how it goes. If the problem persists, you may want to change the fuel pump and sending unit. Steve shads Novice Apr 4, 2007, 12:58 PM Post #3 of 3 (2560 views) Re: 93 chevy 5.7 eats fuel pump relays Sign In I have replaced the fuel filter and relay, so far so good. I took the old relay apart and found that one of the terminals has been getting hot. The smell of burnt wiring also was apparent. I will keep you informed. Thank you for the advice.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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