MannedSage1
New member
- Joined
- Dec 21, 2015
- Messages
- 68
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- 25
My 1.1 cinq won't start. When I turn the key tit doesn't register any fuel but it turns over can anyone help me?
No pump means crank sensor is faulty, or needs cleaning, or a wiring fault. Without a signal, relay won't work, and pump won't.
To make the pump run, the pump relay must get a signal from the crank sensor. It prime's the injector(s), ready to fire. You here the relay click. That's the signal from the sensor to say ready.If the pump isn't priming when the key is at first position, that's nothing to do with crank sensor.
The crank sensor completes the ignition circuit, that then supplies electricity to the pump relay, that then runs the pump, to prime injector. No crank sensor signal, no ignition, no engine brum brum. Simples.
Sorry your wrong.Wrong the pump primes when the ignition is to raise fuel pressure to the rail/injectors and obviously give a solid fuel flow the only time a bad crack sensor will stop any type of fuel is at the injectors obviously if the engine ecu can't see any rpm it's not going to open the injectors or trigger the coil packs