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Chevy S-10

Why would fuel pump keep running when key is not in the ignition?

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2007-09-19 13:15:27
2007-09-19 13:15:27

Bad fuel shut-off solenoid. I FOUND ON MY CHEVY S-10 THAT THE OIL PRESSURE SWITCH WILL FEED THE FUEL PUMP EVEN WITH THE KEY OFF

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Keep the key in the ignition, stupid...

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running in the same problem. i come to conclusion its not EGR fuel pressure regulator or fuel pump. as the fuel pressure stays the same when this happens. it either has to be faulty injectors or ignition.

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Check the 240DL for fuel pressure and good ignition spark. The pressure could be low even though you hear the fuel pump. A problem with the ignition can cause this problem as well.

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because ....well i got nothing I would check your float it might be sticking, fuel filter might be plugged. That depends on what type of lawnmower you are working on but it sound like a fuel problem to me .

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The fuel pump runs constantly as long as the engine is running.

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A malfunctioning the ignition switch will allow the car to keep running after the key is turned off. You can remove the positive ground cable from the battery to shut the car off.

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They mean something to keep the engine running on fuel.

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Trash or debris has plugged the fuel filter. Replace the fuel filter, use starter fluid to get it started.

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It could be your fuel pump. You only have ignition when fuel is added. Turn Key on listen for fuel pump hum. I have listned to the fuel pump it's coming on and I'm getting pressure put it seems no gas to run the engine

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Why does my fuel pump keep running on my 1984 190E

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if its what I'm thinking of it determines the air and fuel mixture needed to keep the car running.

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I would repair the fuel problem-like a bad fuel pump-or bad relay-or blown fuse-or BLOCKED FUEL FILTER-or out of fuel-or bad fuel-

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Its not your engine. Its the fan running to cool the engine down. They all do it and nothing is wrong with your car.

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Fuel pressure regulator. it has a hole in the seal.it is allowing fuel to by pass when it is suppose to not.

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Depends on the car. But it can do a few things, turn off the fuel pump for a few min. crank and start the engine but not keep it running for very long. just crank the engine.

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most electrical fuel pumps work that way. it prevents the engine from flooding. also when you run out of gas, you no longer have to crank the engine to get it started again. all you do is turn the ignition to the on and off position 5 or 6 times and the gas reaches the intake. once the engine is running, the fuel pump continues to run and feed fuel to the engine to keep it running. frank t ( a car nut )

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Did you check the inertia fuel switch on the floor under th glove compartment maybe it is open.

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When any car idles, it lowers the ignition energy (but not completely) to keep the car running. When it is cold outside, your Subaru's ignition energy is lost through heat because electricity also is measured through heat. When there is less ignition energy when it is already running on a lower ignition level, the car (your Subaru) is not likely to idle.

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A spark ignition engine is a gasoline engine. A compression ignition is a diesel engine.basic difference between compression and spark ignition engine is ,compression ignition is a diesel engine. spark ignition is a gasoline engine.diesel engines compress the fuel to a point where the fuel explodes, thus giving ignitiongasoline does not compress to explosion, therefore it needs need a spark to ignite the fuelspark ign. is gasoline. comp. ign. is diesel.A compression ignition engine is typically a diesel. It compresses air so much that the heat from the compression is enough to cause the fuel to ignited once injected. A spark ignition engine is your average gasoline-burning car engine. It uses a spark plug to ignite the air/fuel mixture instead of relying on compretssion ignition.A compression ignition engine uses very high compression of the air to heat it self up and the fuel is injected into the cylinder which self ignites (a diesel engine is a compression ignition engine).A spark ignition engine uses a lower compression ratio and requires the use of a spark to ignite the fuel (a petrol engine is a spark ignition engine).Because the oils used for a diesel have a higher calorific value, they have a better fuel economy, They also do not need extra energy usage to keep the engine running, unlike the energy that is lost to power the spark plugs from the generator/alternator which is taken from the useful energy produced by the engine.

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If you're talking about a fuel pump, then yes, a failed fuel pump or fuel pump relay will keep a fuel-injected car from running.


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