2000 Ford Explorer thumping

2000 FORD EXPLORER
11,000 MILES • 6 CYL • 4WD • AUTOMATIC
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STRATMAN
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I have a Y2k Ford Explorer with 110K. after driving for about 10-15 min. I would stop at a light and hear a thumping noise. same tempo, not very fast with about a second between thumps. after I shut off the car the thumping continues for about 15-20 seconds after the car is off. when I walk outside the car to deterime the origin is seems to be low in the engine compartment. it does not happen all the time.
Jan 13, 2009 at 4:36 PM
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MERLIN2021
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Have you checked for trapped animals? Tell me, this sound is a thump that happens while driving, ur parked, engine running or not?
Jan 13, 2009 at 5:46 PM
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STRATMAN
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definitely not an animal....I would have smelled it. is there an engine part other than the fan that revolved for awhile after the car is shut off? now when I warm the car for awhile before driving, I do not hear it. it seems that after I start driving, it starts to thump...
Jan 14, 2009 at 11:24 AM
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MERLIN2021
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The only part I can think of that might make noise with the engine off, is a heat shield on the catalytic converter, makes a metalic ticking type sound? If the shield welds break, they can be noisy...
Jan 19, 2009 at 12:00 PM
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STRATMAN
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I think I located the sound coming from the hose that connects to the pipe on top of the engine near the thermostat...does that make sense?
Jan 19, 2009 at 12:07 PM
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MERLIN2021
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Can you upload a photo?
Jan 23, 2009 at 6:58 AM
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STRATMAN
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here is the pic
Jan 23, 2009 at 11:39 AM
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MERLIN2021
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no picture shown?
Jan 23, 2009 at 12:50 PM
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STRATMAN
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https://www.2carpros.com/forum/automotive_pictures/301330_HPIM0417_2.jpg

Jan 23, 2009 at 12:53 PM
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MERLIN2021
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If you are talking about the big fat one, check coolant level and the thermostat, may be hearing a boiling in there, is the fan working?
Jan 23, 2009 at 1:43 PM
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STRATMAN
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yes the fat one. coolant always seems to be low...where does it go?
Jan 23, 2009 at 1:56 PM