i have a 1990 camaro iroc z28 and its not getting any power to the fuel pump. it turns over with the key but wont start! im 15 and i cant figure out whats wrong. any help?
Have you checked the fuel pump relay?
Turn over? I assume you mean the engine rotates via the starter. You do you know the fuel pump has no power? Have you checked the fuses? There is a fuse for the fuel pump. When you first get in the car, make sure it is quiet inside before turning on the key. You should hear the fuel pump engage or hum or click when you first turn on the key. If you do, than there is power there. If you are not getting fuel to the fuel rails or the pressure is not built up, than it may be a clogged fuel filter or sluge in the tank preventing fuel from moving through the lines. Did you check to see if there is spark at the spark plugs when turning over the motor? That may be an issue. If indeed there is no fuel getting to the injectors, than it just may be a bad pump or a lose or broken wire to the fuel pump. If you can get a meter on the wire going to the tank and get power there, it just may be a bad pump. Before getting into the expense of replacing the fuel pump, make sure all electrical systems are working.
This article about the fuel pump relay may help: The fuel-pump relay unit is responsible for turning the fuel pump on when it detects the engine is running. When the ignition signal stops, the fuel-pump relay switches the pump off. Problems with the ignition and starting the vehicle often can be traced to the condition of the fuel-pump relay. 1. Description o The fuel-pump relay is a small unit, typically enclosed in a plastic case. The unit contains several sprockets on one side that are clipped onto the ignition system. The fuel-pump relay is engaged only during the start cycle. If it is faulty, it can take longer to start your vehicle. Location o Most fuel-pump relay units are located under the dashboard near the steering column. In some cases, the unit is located in the area where the steering column is mounted or near the engine’s firewall. The end of the fuel pump relay is typically located near the center of the floorboard, under the carpet in the front section of the passenger's or drivers side foot well. Considerations o In addition to difficulty in starting the vehicle, symptoms of a poorly functioning fuel-pump relay include the following: the car dies then starts a few minutes later; the fuel pump makes a strange noise (humming or clicking loudly) for longer than five to 10 seconds after starting; or the engine will not start after you have engaged the fuel-pump switch. Troubleshooting o When your car does not start properly, you can conduct a fuel-injection relay test. Two relays are located inside the fuel-injection system; one of them is responsible for turning the ignition on without turning over the engine, and the other is responsible for turning on when the engine turns. You can check to see if the first relay is working by touching it while turning the ignition on and off. You should feel a "click" every time you switch the ignition. If the fuel-pump relay is not working, you can jump the unit with a small lead jumper cable. You will need to access the fuse panel and insert the cable into the relay unit; the unit will run as long as the wire is inside the relay and can help start your car. Misconceptions o The fuel-pump relay is not wholly responsible for starting the engine. In some vehicles, the car can start with the oil that remains in the galleys. If the engine is cold and the oil is thick, the vehicle can be started within a few minutes without any assistance from the fuel-pump relay. A light humming noise coming from the gas tank is a sign that the fuel-pump relay needs to be replaced.
not getting power to the pump. but if u put power to the pump and turn the key it starts up and runs great ..I have a new relay still not work
I had the same issue as a lot of you. I ran power to my relay and the fuel pump primed as it should. Replaced my computer for $84 and problem was solved. Primes and starts like new.
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