Annoying rattling sound in the 100

Noah · 07-24-07, 08:12 AM

98 100 - I thought it was the heat shield rattling, but it doesn't seem to be. It is like something is loose and it doesnt go away when the truck gets up to temp. Any idea where else i should look?? Seems to be coming from the front...

r3run33 · 07-24-07, 09:52 AM

hello i have an 06 lx that has had this also for about 3 months now 1st visit to dealership they said it was the spare tire nope its still there. i go back in 2 or 3 weeks befor a big trip & hope they can fix it i told them it was the exhaust but no luck.

spressomon · 07-24-07, 10:28 AM

I've had a rattling noise from the front wheel/suspension area that sounds out when travelling over rougher terrain (on & off-road). Might be the inner fender panel(s) or? It the same sound my old '71 Chevelle SS made that was caused by the lug nut covers

. The LC is going in for some suspension work in a couple weeks...so hopefully we'll figure it out...so I don't have to force myself to ignore it anymore

.

Noah · 07-24-07, 12:04 PM

for some reason it sounds like thin metal..... dont ask why i think this b/c i dont know. It is towards the front - middle...

ZJ2UZJ100 · 07-24-07, 01:36 PM

It could be the biscut of metal rattling around in your catalytic converter....

Sometimes they corrode around the edges, inside the box, and they start to rattle around. Try crawling under and thumpin on the Cat with your fist and listen for a rattle.

Noah · 07-24-07, 02:11 PM

Quote:

Originally Posted by ZJ2UZJ100

It could be the biscut of metal rattling around in your catalytic converter....

Sometimes they corrode around the edges, inside the box, and they start to rattle around. Try crawling under and thumpin on the Cat with your fist and listen for a rattle.

i think you may be right.......i'll report back..

9toys · 07-24-07, 04:15 PM

My 99 100 ratttled when i got it and it was the heat shield. I replaced it for about $150.00 but figured out later i should have just put some extra bolts through it.

calbo · 07-24-07, 05:20 PM

I had a rattle that would also come out when the passenger's front door was slammed hard enough.
Turned out to be the bracket holding the auxillary fan in place. It's in front center (right behind the grill which, on an LX, lifts up along with the hood so it was easy to get to) and it was a case of metal-to-metal vibrating and causing either a rattle or a squeak.
I folded a piece of electrical tape or something and sandwiched it between the two metal parts. Never heard it again.

Hope this helps.

-Cal

ShottsUZJ100 · 07-24-07, 05:55 PM

When my 2nd steering rack gave up, it rattled over the bumps!

Snook · 07-24-07, 09:18 PM

Quote:

Originally Posted by ShottsUZJ100

When my 2nd steering rack gave up, it rattled over the bumps!

I had the rattle problem.

Is your steering control more sloppy than normal when the steering rack gave up? My control is still crisp but the rattle is still there, it drive me nuts.

BeefBarley · 07-25-07, 07:28 AM

Quote:

Originally Posted by 9toys

My 99 100 ratttled when i got it and it was the heat shield. I replaced it for about $150.00 but figured out later i should have just put some extra bolts through it.

I'll give it another look

BeefBarley · 07-25-07, 07:29 AM

Quote:

Originally Posted by calbo

I had a rattle that would also come out when the passenger's front door was slammed hard enough.
Turned out to be the bracket holding the auxillary fan in place. It's in front center (right behind the grill which, on an LX, lifts up along with the hood so it was easy to get to) and it was a case of metal-to-metal vibrating and causing either a rattle or a squeak.
I folded a piece of electrical tape or something and sandwiched it between the two metal parts. Never heard it again.

Hope this helps.

-Cal

i will give this a look as well. thanks

ShottsUZJ100 · 07-25-07, 10:16 AM

Quote:

Originally Posted by Snook

I had the rattle problem.

Is your steering control more sloppy than normal when the steering rack gave up? My control is still crisp but the rattle is still there, it drive me nuts.

It was until the near-end when we felt losseness and was losing power.

gjh · 07-25-07, 02:05 PM

I too have a very annoying rattle in the front left, sounds like a large metal panel, shield, but can't find anything loose. The usless dealer says it might be my roof rack. Nice guess, not!!

Sounds like something large, almost like the front bumper.

It's driving me nuts, it sounds like Fred Sanford, very embarassing.

BeefBarley · 07-25-07, 02:09 PM

Quote:

Originally Posted by gjh

I too have a very annoying rattle in the front left, sounds like a large metal panel, shield, but can't find anything loose. The usless dealer says it might be my roof rack. Nice guess, not!!

Sounds like something large, almost like the front bumper.

It's driving me nuts, it sounds like Fred Sanford, very embarassing.

I bet it is the same sound - quite embarrassing.

nov74fj40 · 07-26-07, 05:42 AM

Great way to test to see if it's the heat shield on the c. converter - get under the LC and pound on the exhaust pipe around the converters (you might want to wait until it cools off...) keep doing this until (or if) you hear that annoying rattle. There are a few bolts that have a tendency to work loose or fall out on these shields...this just happened to 98 a couple of months ago.... my converter shield was missing a bolt so everytime my tranny shifted or there was a low rpm condition I would hear the rattle. Bolt installed, noise gone....

BeefBarley · 07-26-07, 06:56 AM

Quote:

Originally Posted by nov74fj40

Great way to test to see if it's the heat shield on the c. converter - get under the LC and pound on the exhaust pipe around the converters (you might want to wait until it cools off...) keep doing this until (or if) you hear that annoying rattle. There are a few bolts that have a tendency to work loose or fall out on these shields...this just happened to 98 a couple of months ago.... my converter shield was missing a bolt so everytime my tranny shifted or there was a low rpm condition I would hear the rattle. Bolt installed, noise gone....

yep happens only at low RPM - i'll check out the heat shield on the CAT

cpcc · 07-26-07, 07:58 PM

I would say it sounds like the heat shields. Better off just putting on the clamps and cinching them up. A quick and easy fix. If this doesn't work, then you can keep on looking.

lhl · 07-30-07, 07:13 AM

I am having the same sort of issue. When I go over bumps in town the truck sound like it is about to fall a part. I have gotten under the truck numerous times to try to find the problem or replicate the problem by banging on certain areas but have yet to find out what it is. I have noticed that after a hard rain when the truck is all wet it does not do it nearly as much. I think that I have narrowed it down to the left front area around the wheel.

spressomon · 07-30-07, 04:24 PM

Quote:

Originally Posted by lhl

I am having the same sort of issue. When I go over bumps in town the truck sound like it is about to fall a part. I have gotten under the truck numerous times to try to find the problem or replicate the problem by banging on certain areas but have yet to find out what it is. I have noticed that after a hard rain when the truck is all wet it does not do it nearly as much. I think that I have narrowed it down to the left front area around the wheel.

Ditto!

boombapslappy · 08-13-07, 03:25 PM

I'm hearing a rattle in my tacoma at 2000 rpm. I think it's inside the cat. I've checked shields, bolts, pipes, etc. and can only reproduce noise when I bang on the pipe near the cat. I've made up my mind to replace the cat but dealer wants to charge me $1100 just for the parts! What to do?

dominic · 08-13-07, 05:40 PM

Sounds like it nearly has to be the heat shield on the cat.
I had that problem. It was more noticable when taking off at certain revs. Very embarrassing.
I cured it by putting a bid jubilee clamp around it.
Very simple to do and cheap.

macneill · 08-13-07, 07:42 PM

Swinging beef?

nov74fj40 · 08-14-07, 04:44 AM

Get under the vehicle and check to see if ALL the bolts are on the cc shields. There is one that will hide on you ...that's the one that was missing on my 98. Your problem is probably either this what I'm describing or your converter is rusted out on the inside and rattles....You could always cut the converter out, run a straight pipe, put some spreewells on it, a boom box in the back sell it to someone in east LA....then go and get you an FJ40.

boombapslappy · 08-14-07, 06:39 AM

I think it is rusted out...I've exausted myself trying to figure out the easy fix. I could cut it out since I live in SC (no inspection!!!) but I'm planning on selling it and getting an '88 62 as my daily (Wife's driving the 100). I don't want the next guy to have legal issues. Maybe I'll sell it with the rattle and let him deal with it.

JZinNM · 08-14-07, 09:17 AM

I have a 99 LC that has a thin metal rattle near the front left. It seems to only happen when it's cold. I've banged on the exhaust but no luck. I'll check the aux fan bracket tonight.

One other place I looked - and you may want to as well - is the brake shield. The brake shield on my 96 Lexus LS400 had a nasty crack and rattled pretty bad at high speeds.

boombapslappy · 08-14-07, 10:16 AM

I'll check that too...the thing that really gets me is that mine only rattles at 2000 rpm. high speed, low speed, doesn't matter...

Gene3x · 05-21-08, 08:51 AM

I have had several squeaks in my 04 and all of them have come from the door assembly not being

07-24-07, 08:12 AM	#1
Noah * Join Date: Feb 2005 Location: Dis shits about to blow up... TLCA# 15023 Posts: 781	Annoying rattling sound in the 100 98 100 - I thought it was the heat shield rattling, but it doesn't seem to be. It is like something is loose and it doesnt go away when the truck gets up to temp. Any idea where else i should look?? Seems to be coming from the front...

07-24-07, 10:28 AM	#3
spressomon IH8MUD Lifer Join Date: Jan 2005 Location: Reno Posts: 4,610	I've had a rattling noise from the front wheel/suspension area that sounds out when travelling over rougher terrain (on & off-road). Might be the inner fender panel(s) or? It the same sound my old '71 Chevelle SS made that was caused by the lug nut covers . The LC is going in for some suspension work in a couple weeks...so hopefully we'll figure it out...so I don't have to force myself to ignore it anymore . __________________ Modded '99 for on-trail exploring: 315's, 4.88's, AO drawers, Slee rr, TJM fr, ARB fr locker, good music for ears, Waeco CF-50, PowerGate with 2nd battery, home brew tube type sliders & t-case skid plate, 9.5XP/X-line, LF 170's, OEM 864's, Fox 2"remotes at each corner, 12mm body lift... KE7NCM

07-24-07, 01:36 PM	#5
ZJ2UZJ100 IH8MUD Regular Join Date: Oct 2004 Location: Boston Posts: 207	It could be the biscut of metal rattling around in your catalytic converter.... Sometimes they corrode around the edges, inside the box, and they start to rattle around. Try crawling under and thumpin on the Cat with your fist and listen for a rattle. __________________ 2000 UZJ100 2004 allroad 2.7TT (Not your average station wagon) 1996 Jeep ZJ 5.2L (still in the family) 1994 Jeep ZJ 4.0L (also still in the family)

07-24-07, 04:15 PM	#7
9toys IH8MUD Junior Join Date: Feb 2007 Location: Harker Heights, TX Posts: 136	My 99 100 ratttled when i got it and it was the heat shield. I replaced it for about $150.00 but figured out later i should have just put some extra bolts through it. __________________ 99 UZJ100, '04 TUNDRA DC 4X4, WIFE'S '03 MR-2 SPYDER

07-24-07, 05:55 PM	#9
ShottsUZJ100 IH8MUD Lifer Join Date: Apr 2003 Location: Tucson, AZ Posts: 6,332	When my 2nd steering rack gave up, it rattled over the bumps! __________________ NEW! My 100-series Step-by-Step 5-year buildup: http://forum.ih8mud.com/showthread.php?t=150735 Four-Wheeling Website: http://shottscruisers.smugmug.com/

07-24-07, 09:52 AM	#2
r3run33 IH8MUD Addict Join Date: Aug 2004 Location: new jersey TLCA# 17299 Posts: 527	hello i have an 06 lx that has had this also for about 3 months now 1st visit to dealership they said it was the spare tire nope its still there. i go back in 2 or 3 weeks befor a big trip & hope they can fix it i told them it was the exhaust but no luck.

07-24-07, 12:04 PM	#4
Noah * Join Date: Feb 2005 Location: Dis shits about to blow up... TLCA# 15023 Posts: 781	for some reason it sounds like thin metal..... dont ask why i think this b/c i dont know. It is towards the front - middle...

07-24-07, 05:20 PM	#8
calbo IH8MUD Junior Join Date: Jan 2007 Location: Porkland Posts: 84	I had a rattle that would also come out when the passenger's front door was slammed hard enough. Turned out to be the bracket holding the auxillary fan in place. It's in front center (right behind the grill which, on an LX, lifts up along with the hood so it was easy to get to) and it was a case of metal-to-metal vibrating and causing either a rattle or a squeak. I folded a piece of electrical tape or something and sandwiched it between the two metal parts. Never heard it again. Hope this helps. -Cal

07-25-07, 02:05 PM	#14
gjh IH8MUD Junior Join Date: Oct 2004 Location: North of Boston Posts: 99	I too have a very annoying rattle in the front left, sounds like a large metal panel, shield, but can't find anything loose. The usless dealer says it might be my roof rack. Nice guess, not!! Sounds like something large, almost like the front bumper. It's driving me nuts, it sounds like Fred Sanford, very embarassing. __________________ Gary Hamilton 2000 UJZ 100-stock for now, cept Bilsteins & 285 Revos 2005 XC70-Wife's snow bunny! 1968 Triumph TR250 - my toy North of Boston

07-26-07, 05:42 AM	#16
nov74fj40 IH8MUD Junior Join Date: Dec 2006 Location: North Mississippi Posts: 115	Heat shield Great way to test to see if it's the heat shield on the c. converter - get under the LC and pound on the exhaust pipe around the converters (you might want to wait until it cools off...) keep doing this until (or if) you hear that annoying rattle. There are a few bolts that have a tendency to work loose or fall out on these shields...this just happened to 98 a couple of months ago.... my converter shield was missing a bolt so everytime my tranny shifted or there was a low rpm condition I would hear the rattle. Bolt installed, noise gone....

07-26-07, 07:58 PM	#18
cpcc IH8MUD Regular Join Date: Nov 2005 Posts: 214	I would say it sounds like the heat shields. Better off just putting on the clamps and cinching them up. A quick and easy fix. If this doesn't work, then you can keep on looking. __________________ 04 LX470

07-30-07, 07:13 AM	#19
lhl IH8MUD Rookie Join Date: Feb 2004 Location: NJ Posts: 40	I am having the same sort of issue. When I go over bumps in town the truck sound like it is about to fall a part. I have gotten under the truck numerous times to try to find the problem or replicate the problem by banging on certain areas but have yet to find out what it is. I have noticed that after a hard rain when the truck is all wet it does not do it nearly as much. I think that I have narrowed it down to the left front area around the wheel. __________________ 2001 Land Cruiser 2004 G500

08-13-07, 03:25 PM	#21
boombapslappy huh? Join Date: Aug 2007 Location: Upstate SC TLCA# 17774 Posts: 311	I'm hearing a rattle in my tacoma at 2000 rpm. I think it's inside the cat. I've checked shields, bolts, pipes, etc. and can only reproduce noise when I bang on the pipe near the cat. I've made up my mind to replace the cat but dealer wants to charge me $1100 just for the parts! What to do?

08-13-07, 05:40 PM	#22
dominic IH8MUD Rookie Join Date: Jan 2004 Posts: 53	Sounds like it nearly has to be the heat shield on the cat. I had that problem. It was more noticable when taking off at certain revs. Very embarrassing. I cured it by putting a bid jubilee clamp around it. Very simple to do and cheap.

08-13-07, 07:42 PM	#23
macneill Rollin’ on 33s... Join Date: Jun 2004 Location: Brooklyn / Edgartown / Oak Bluffs TLCA# 12733 Posts: 3,087	Swinging beef? __________________ 1981 FJ60 - Martha’s Vineyard - 209K, OME, BFG ATs, MAF header, hi-flo cat and Magnaflow, Surco Safari Rack, Rod Racks. 2002 UZJ100 - Brooklyn - 42K, OME 865, OME T-Bars, TJM T-15, TJM RB8, Slee Diff-Drop, Slee Tube Sliders, African Outback Roof Rack, Borla, Warn, IPF, PIAA, Toyo Open Country ATs. Gotham City Land Cruisers Yankee Toys Bay to Blue Ridge Cruisers

08-14-07, 04:44 AM	#24
nov74fj40 IH8MUD Junior Join Date: Dec 2006 Location: North Mississippi Posts: 115	Get under the vehicle and check to see if ALL the bolts are on the cc shields. There is one that will hide on you ...that's the one that was missing on my 98. Your problem is probably either this what I'm describing or your converter is rusted out on the inside and rattles....You could always cut the converter out, run a straight pipe, put some spreewells on it, a boom box in the back sell it to someone in east LA....then go and get you an FJ40.

08-14-07, 06:39 AM	#25
boombapslappy huh? Join Date: Aug 2007 Location: Upstate SC TLCA# 17774 Posts: 311	I think it is rusted out...I've exausted myself trying to figure out the easy fix. I could cut it out since I live in SC (no inspection!!!) but I'm planning on selling it and getting an '88 62 as my daily (Wife's driving the 100). I don't want the next guy to have legal issues. Maybe I'll sell it with the rattle and let him deal with it.

08-14-07, 09:17 AM	#26
JZinNM IH8MUD Rookie Join Date: Jul 2007 Location: Albuquerque, NM Posts: 1	I have a 99 LC that has a thin metal rattle near the front left. It seems to only happen when it's cold. I've banged on the exhaust but no luck. I'll check the aux fan bracket tonight. One other place I looked - and you may want to as well - is the brake shield. The brake shield on my 96 Lexus LS400 had a nasty crack and rattled pretty bad at high speeds.

08-14-07, 10:16 AM	#27
boombapslappy huh? Join Date: Aug 2007 Location: Upstate SC TLCA# 17774 Posts: 311	I'll check that too...the thing that really gets me is that mine only rattles at 2000 rpm. high speed, low speed, doesn't matter...

05-21-08, 08:51 AM	#28
Gene3x IH8MUD Junior Join Date: Jan 2006 Location: Dallas, TX Posts: 112	I have had several squeaks in my 04 and all of them have come from the door assembly not being