Fuel Pump carries on running.

[BC4R]

Quick questions, is it normal for the fuel pump to carry on running for a few minutes after you turn the engine off? Thanks

 

[kball]

No, the pump only has power when cranking the engine or the engine is running. Are you sure it's the pump running?

 

[BC4R]

Yeah its the pump nothing else in the area of the tank that makes a motor whine? Have to say today it didn't do it on a quick 5 minute drive this morning, will check again tonight after a longer drive.

 

[TheDurk]

Yeah its the pump nothing else in the area of the tank that makes a motor whine? Have to say today it didn't do it on a quick 5 minute drive this morning, will check again tonight after a longer drive.

Probably a faulty COR (Circuit Opening Relay). It's certainly not the fault of the pump. Give me a year and I can maybe advise a swap of relays.

 

[kball]

If your 4runner is a later model maybe it's the charcoal canister making some noise. It's above the spare tire.

 

[midevilgargoyle]

Fuel pump running

I first noticed my wive's 2011 Sienna cycling the fuel with the pump running. Since it did it when the vehicle was cold & just sitting, I thought the relay was bad. I changed the relay, but 2 days later, same thing. I just forgot about it & after a week of owning my 2016 4Runner, it did the same thing. I guess something in the computer programming cycles the fuel.

 

[BC4R]

Probably a faulty COR (Circuit Opening Relay). It's certainly not the fault of the pump. Give me a year and I can maybe advise a swap of relays.

Its 1999 - thanks.

 

[BC4R]

If your 4runner is a later model maybe it's the charcoal canister making some noise. It's above the spare tire.

Its a 1999 so its not the canister, but thanks

 

[TheDurk]

Its 1999 - thanks.

In 1999, the Power relay in the top right corner on the reverse of the fuse panel by driver's knee is the exact same part as the COR-- far right side low down under dash panel p/n 90987-02012). If you pull the COR and the noise keeps going, then it's probably not the pump, but I can't think what else it would be and I've owned a '99 for 17 years.

 

[BC4R]

In 1999, the Power relay in the top right corner on the reverse of the fuse panel by driver's knee is the exact same part as the COR-- far right side low down under dash panel p/n 90987-02012). If you pull the COR and the noise keeps going, then it's probably not the pump, but I can't think what else it would be and I've owned a '99 for 17 years.

Thanks for the info i'll keep an eye on that relay and see how it goes.