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27 lut 2023 · The fuel pump relay often has 4 pins, and in this case, diagnosing is usually easy. If your relay has more pins and not the same numbers mentioned here, you need to check a wiring diagram. Locate the fuse box and locate the fuel pump relay. Lift it and check under it for the numbers 30, 85, 86, and 87.
Failure: An utterly failed fuel pump relay won’t be able to send power to the fuel pump, preventing the engine from starting. Fixes: Replacing the relay should allow the engine to start normally. Troubleshooting and Replacing Fuel Pump Relays
STEPS TO DIAGNOSE: 1. CONNECT PIN1 (BLACK GROUND) TO PIN16 (PINK GROUND) 2. CONNECT PIN32 (RD/WH BATT + ) TO PIN47 (GY FUEL PUMP 12+) THIS WILL POWER THE PUMP TO RUN AND CHECK FOR A FAULTY FUEL PUMP. 3. NEXT, CHECK FOR FUEL PUMP SIGNAL AT THE FUEL SYSTEM CONTROL MODULE. 4. FIND THE DARK GREEN/WHITE WIRE IN PIN13.
If your fuel pump is not functioning properly, it could be due to faulty wiring. Signs of faulty wiring include the fuel pump not priming when you turn on the ignition, the fuel pump not turning on at all, or intermittent power loss to the fuel pump.
8 sty 2016 · Usually a bad or failing fuel pump relay will produce a few symptoms that can alert the driver of the issues. 1. Engine stalls. One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls.
1 maj 2024 · If you notice a problem with your fuel pump, such as no noise coming from it or your engine not starting, there could be a problem with the fuel pump relay, which controls the electric current running through the pump. Luckily, fuel pump relays are easy to test and replace on your own.
11 kwi 2014 · If the fuel pump relay fails, what usually happens is that the oil pressure switch feeds power to the fuel pump and gets the engine started and keeps it running. When this happens, the engine will crank till the oil pressure gets up and the oil pressure switch closes.
