How does the fuel pump work on a Pontiac Sunfire?
The fuel pump has a relay and fuse – when the key is turned on, the pump should run for approx 5 to 8 seconds then stop, when the key is turned to the ‘run/start’ position, the fuel pump will continue to run. 2 people found this helpful. I have a pontiac sunfire 1997 out of nowhere it wouldn’t start.
Where is the fuel pump relay on a Pontiac Grand Am?
The fuel pump relay is #18 in the fuse box. Start with the car off, and have somebody else put the key in the cars ignition and attempt to start the car while you listen to the relay. If you can hear this relay make a “clicking” noise as the car attempts to start, then it is working properly.
Why is my fuel pump reset button not working?
Anything from factory security system locking you out, bad fuse/relay, clogged fuel filter,faulty fuel pump, oil sending unit/crank sensor failure, clogged catalytic converter, failing electronic ignition, ECM/PCM,etc.,etc. As a first step best to see if there are any stored trouble codes that could point directly to the fault.
Does the crank position sensor control the fuel pump?
Fuel Pump / Crank Position Sensor. Does crank position sensor control fuel pump? no, the CKP sensor does not control the fuel pump – just tells (as well as cam sensor) when the fuel injectors need to inject fuel into the intake.
How to install new GM wire harness on fuel pump module?
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What happens when the fuel pump goes out on a Pontiac Sunfire?
There are physical signs that you can feel when your Sunfire’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.
When to know if your fuel pump is bad?
If your car isn’t starting at all, and you hear the fuel pump prime that is usually a good indication that the pump is working to some capacity. Testing your Sunfire’s fuel pressure on each side of the pump would be the best way to diagnose this problem.
Fuel Pump / Crank Position Sensor. Does crank position sensor control fuel pump? no, the CKP sensor does not control the fuel pump – just tells (as well as cam sensor) when the fuel injectors need to inject fuel into the intake.
Why is the fuel pump in the fuel tank?
It is in the fuel tank because “pushing” fuel to the fuel rail is easier than “pulling” the fuel, which is what an inline pump would do. While being in the fuel tank makes the pump more reliable, it also makes it a lot more difficult to get to.