humming noise from engine for 15 minutes after shut off.

[staudy]

After a 20 mile trip the noise was like a humm and felt like it was coming from the top of engine below the main cover with the T Bird logo. Maybe an injector solenoid??? It wasn't in front by the elec fan. 2003 with 30k.

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[z06bigbird]

After a 20 mile trip the noise was like a humm and felt like it was coming from the top of engine below the main cover with the T Bird logo. Maybe an injector solenoid??? It wasn't in front by the elec fan. 2003 with 30k.

Wild @ss guess: bad gasket on thermostat housing??

 

[AnniversaryBird]

Wild @ss guess: bad gasket on thermostat housing??

Pull the cover off and investigate..... My Expedition does the same thing everytime we drive it and it is the purge valve for the evap system.
It doesn't hurt anything if that is what it is..... it's Just bleeding off excessive tank pressure.

 

[AnniversaryBird]

No wonder he quit replying.....These replies would scare any car owner....
Why do online Forums tend to be so harsh or severe all the time.....It isn't always something bad. Cars make noises....that's a fact of life and not all of them mean something bad is happening.

Like I mentioned a while back...Pull off the decorative engine cover and look and listen when it's doing it... You should easily be able to pinpoint at least the area it's coming from and sub sequentially the component...

Now both our Expedition and Grand Marquis make a similar noise after shut off...
On the Expedition it's the EVAP Purge valve bleeding off tank pressure.... I can open up the gas cap and it stops.....On the Mercury it's the High side and low side A/C pressures balancing out after shut off....

Either way neither sound poses a problem and are completely normal noises...

Not everything has to be severe or terrible so there is no need to scare the crap out of people with bad head gasket theories and such....

Just my 2 cents....

Cheers!

 

[jtharaldso]

you should expect the worst with these cars!!

 

[dchamb9414]

here's a tip for you to help pinpoint engine noises, take a stick (as pehaps a
2" long x half in. dowel rod), place one end at your ear and move the rod around the suspected area, placing it firmly on the engine and when you get to where the noises originates, you will know. i have a 94 yr. old uncle mechanic (still working), i first saw do this when i was a teenager and i have used this "high tech" system many times myself.

 

[Trackerrrr]

You have a happy car perhaps? Just sayin'. I hum when I'm happy.