Close
Car Questions
RepairPal is your advocate for car care advice and guidance

Loud Rattle when idle

(1999 Ford Expedition)
in Carlsbad, CA on August 25, 2009
My car has recently started having a very loud and extremely embarrasing rattling noise when in idle or when I'm going real slow, like through drive through. If I place the car in neutral or park the noise will go away or reduce drastically. There is no rattle when driving at regular speeds. Sometimes when I'm driving slow to turn a corner it will also rattle. The rattling sound is a mettal to mettal type noise ... very loud. Any ideas?
Displaying 3 answers & 0 comments
Popular Answer
on August 25, 2009
You local Repair shop should perform an inspection of your Exhaust system. Your Catalytic Converter may the cause for such noise. Internal components inside your Catalytic Converter may have separated creating noise. Exhaust shields should be inspected also for broken welds or loose shields.
on October 29, 2009
Take a look At The Muffler Under The Truck Right Past The Crossover Connection Should Be A Clamp There Holding It Correctly Mine Was Loose Because The Shop Did Not Get It Tight... Hope This Helps!!!
on April 11, 2011
I have the same noise, not sure buy my uncle told me its just the heat shield vibrating
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
2004 CHEV TAHOE LS. Rattling noise front of veh...
All engine parameters okay. no over heating, oil okay. water temp ok. no leaks. radiator fan not rubbing. no reduced...
Loud bass like rattling from inside cabin when ...
When i’m driving it’s fine but when i’m stopped it’s like a loud bass like shaking, rattling noise that is unbearable...
Didn't find what you were looking for?