Hi. WHen I turn my ignition switch on, without starting the engine, should the fuel pump pressurize and shut off, or continue to run making a hissing sound. it also makes this sound when being driven. Seems like fuel pressure regulator making the noise. Car just quit on me while idleing, burned out starter.
The fuel pump should prime for second or two when turning the ignition on. Then the fuel pump should run when the engine is cranked when the ecu detects a signal from the crank sensor. If the fuel pump runs all the time make sure the relay has not been bypassed with a piece of wire. If its been bypassed it leaves the car in a dangerous condition. In the event of an accident and a fuel line is ruptured the fuel pump will run continually with a huge risk of a fuel fire.
Your fuel pump should cycle on until the proper fuel pressure is achieved then it should shut off
in my experience with the many vehicles Ive encountered the pump shuts off if your engine is not running when the system reaches pressure. if the engine is running the pump will run continuously. An easy way to find this out try it on some friends vehicles. I have dealt with mostly north american vehicles however so i suppose your vw could be different but as i said all of the vehicles i have worked on work in the fashion i described earlier
no noise the fuel pressure is just low fuel pressure
Replaced with new parts fuel pump,fuel filter , fuel pressure regulator
without starting the car the fuel pump will shut off once the fuel reaches proper pressure
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I don't think the solution is correct in saying the pump shuts off. Unless the pressure switch is in the pump itself, it seems like the fuel bypasses through the regulator, as the regulator is controlled by vaccuum, it is not able to turn off the pump. I have replaced the regulator resulting in much better performance, but the pump still runs with the key on/engine off.
no noise in pump or anywhere just low fuel pressure.
not airflow related, blew something above one of the cylinders, idles fine but burns oil and hisses
The engine will shut off while driving. Fuel pressure regulator just replaced.
Brake booster makes hissing noise with engine not running
Hi I was driving from work when I smelled something burning.I stoped,switched off the ignition,ppopped the hood and found that a wire running from the coil to the fan has been melted.I took it of and turned the ignition key.engine turns over nicely but car won't start.what to do please
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