2004 Ford Expedition noise

73EDGAR

MEMBER
2004 FORD EXPEDITION
5.4L
V8
4WD
AUTOMATIC
73,000 MILES

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.

2 Replies

SATURNTECH9

MECHANIC
30,869 POSTS

Sounds like it could be the rivets holding the heat shield could be loose.

Was this

answer

helpful?

Yes

No

Sunday, December 8th, 2013 AT 9:44 PM

CJ MEDEVAC

MECHANIC
11,005 POSTS

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

Images (Click to make bigger)