2004 Ford Expedition noise

2004 FORD EXPEDITION
73,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC
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73EDGAR
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making a tin can poping noise when warming up and when I shut the truck off, never did it before until now, took it to the muffler shop said theres no problem with the exhaust or heat shields. driving me crazy, dont know if it helps but I change stock muffer to a flowmaster and its leaking condisation were it was welded, also muffler shop said thats okay ,no problem there.
Dec 8, 2013 at 8:01 PM
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SATURNTECH9
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Sounds like it could be the rivets holding the heat shield could be loose.
Dec 8, 2013 at 9:44 PM
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CJ MEDEVAC
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I RECKON THE OLD FASHIONED WAY OF FINDING THE NOISE'S ORIGIN IS IN ORDER

INSTRUCT YOUR HELPERS

STATION FOUR (OR MORE) OF YOUR YOUNGINS/ THE NEIGHBOR KIDS/ FRIENDS UNDER THE EDGES OF YOUR RIG

FIRE IT UP

WHEN IT MAKES A RACKET........HAVE 'EM ALL POINT TO THE AREA THEY HEARD IT

.........WAIT!.....IT COULD DO IT AGAIN ELSEWHERE!---KEEP 'EM POINTING

..........NOW, WE HAVE NARROWED IT DOWN SOMEWHAT

........AIN'T SPENT NO MONEY EITHER!

THE RIG IS WARMED UP......CALL OFF TODAY'S SEARCH

.....................DAY TWO

STATION AS MANY OF 'EM AS YOU CAN CLOSE TO YESTERDAYS "POINT AREA"

FIRE IT UP!

KEEP NARROWING IT DOWN

REPEAT IF NECESSARY

THE MEDIC
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Dec 8, 2013 at 9:48 PM
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