Bypass the relay and if the pump works the relay is bad.
If the relay is bad, then the fuel pump will not work.
Swap the fuel pump relay with another like relay in the fuse/relay center. If the problem with the fuel pump goes away, the relay was bad. If not, knowing GM fuel pumps, the fuel pump is the problem.
Bad relay, No power to relay, Wiring from relay to pump and our most likely problem is, the fuel pump is bad. changed it already
The main relay and the fuel pump relay are the same. Take the fuel pump relay and swap it with the main relay and see if that will help you....
If the fuel pump relay is defective the fuel pump will not run.
If there is no fuel pressure and the fuel pump circuit, fuse and relay checks okay.
If your fuel pump is not running , it could also be the fuse for the fuel pump relay , the fuel pump relay , a bad electrical connection , or a bad fuel pump
Swap the relay with a another like relay.
If the fuel pump relay switch is bad then the fuel pump will not be turned on. Think of the relay like a light switch. If the switch has a bad connection then the light doesnt work.
You can swap relays within the relay center with another relay that matches, but in most cases it is seldom the relay at fault, it is probably a bad fuel pump.
If the pump is running the relay is good.
bad fuel pump bad fuel pump
If the main relay goes bad the fuel pump will not function. This has caused many a person to replace the fuel pump only to find out later that the culprit was the Main Relay and not the fuel pump at all. If you suspect the main relay is bad just replace it to be sure.
Swap it with a known good one.
Bad fuel pump, blown fuel pump fuse, bad fuel pump relay, or clogged filter.
I believe that you can switch the Horn Relay with the Fuel Pump Relay and if the horn no longer works and the Fuel Pump does then that relay went bad... try that, its a sure fire way to know whats wrong... If it checks out good it might be a Defective Fuel Pump.
Swap the fuel pump relay with another like relay.
Yes, along with many other causes a bad fuel pump relay can cause a no start. The fuel pump relay provides power to the fuel pump.
BAD fuel pump relay.
The fuel pump relay is in the fuel pump itself, Therefore when your relay goes bad or you get a 5-4 trouble code you must replace the fuel pump.
If you turn on the ignition key without starting the engine you should hear the fuel pump run for a few seconds. If you do not check the fuel pump fuse and replace the relay before proceeding. If the fuse is good and the relay is good then you know the pump is more than likely defective.
No, it shouldn't have anything to do with the starter. A bad fuel relay will stop the fuel pump from working.
bad fuse for fuel pump relay bad fuel pump relay bad electrical connection clogged fuel filter anybody else have any suggestions ?
Make sure you have voltage at the pump. If you do then the new pump is defective. If not, the fuse is blown or the fuel pump relay is bad. Where is relay?