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View Full Version : Name that rattle? (VIDEO)


Chayton
10-09-2017, 12:32 PM
On today’s episode of “name that rattle!” We have a 2003 Mercury Marauder. The owner is experiencing a rattling sound at idle, coming from directly under the car. The owner believes it sounds like the drivers side primary cat on its way out, but he wants to hear from the experts!!! Feel free to chime in!

https://youtu.be/KaGhEAcBaQA

Note that in the video, when the sound goes away is when I give it baby gas. Let off and it rattles.
Chayton
10-09-2017, 01:36 PM
bump? come on this is supposed be fun!!
RubberCtyRauder
10-09-2017, 01:53 PM
tap on the cat and see if it rattles, sort of sounds like cat..what does it sound like under hood? doe the sound come from cat area?
Chayton
10-09-2017, 01:59 PM
tap on the cat and see if it rattles, sort of sounds like cat..what does it sound like under hood? doe the sound come from cat area?

Hard to hear from under the hood, its definitely coming from the bottom. I was thinking CAT or maybe the $300 torque converter I have in there? Will do more investigating once I get home.
ab9sgken
10-09-2017, 03:00 PM
Hard to hear from under the hood, its definitely coming from the bottom. I was thinking CAT or maybe the $300 torque converter I have in there? Will do more investigating once I get home.Hear shield of cat I think.

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ab9sgken
10-09-2017, 03:07 PM
Hear shield of cat I think.

Sent from my SM-G920P using TapatalkHeat shield of cat I meant to say.

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2mercs
10-09-2017, 04:10 PM
Didn't someone have a cracked flex plate making a similar noise?

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JimP
10-09-2017, 05:16 PM
Check the Torque converter bolts to the flywheel.
1Marauder
10-09-2017, 05:32 PM
Yes, sounds like two pieces hitting each other... heat shield or mount pieces clanking agaist each other.

When I've heard inside cat baffles come loose I've heard more like BB's a looser higher sound... although I guess it could be one bigger piece comming loose and clanging against inside.
Chayton
10-09-2017, 07:12 PM
UPDATE: I gave the cat one good smack with a BFH. Noise gone for now :)
Chayton
10-09-2017, 09:27 PM
I lied. Noise seems worse now. ****. praying this isnt rod knock... if it was, wouldnt it get louder with revs? even the tiniest bit of throttle and it goes away. Didnt have a chance to tighten the torque converter bolts since I need a helper. Praying its not the dreaded rod knock... ugh :(
Zack
10-10-2017, 08:04 AM
Flexplate .....
drwhy
10-11-2017, 07:01 PM
Sounds similar to the cat converter problem that was present on a lot of 04 Crown Vics. I had one replaced on the 8 year, 80,000 mile warranty, way back when.
1Marauder
10-12-2017, 09:10 AM
Chayton... What ways it? You can't leave us hanging!
Chayton
10-16-2017, 08:46 AM
Chayton... What ways it? You can't leave us hanging!

I think its flexplate... Been dealing with some crap so havent had the motivation to get under there. Hopefully this week..... :/
Charlie Costell
10-24-2017, 01:30 PM
If you put it in drive and the noise stops, it is the flexplate. Looks like somebody bastardized a cat install also. Butchers.
Chayton
10-24-2017, 06:57 PM
If you put it in drive and the noise stops, it is the flexplate. Looks like somebody bastardized a cat install also. Butchers.

It also makes the noise in drive