Slight Rattle in front end...

[TodzY2KExpy]

I had a leaking shock on the drivers side front so today was a nice day and I changed them out, no biggie once the correct wrench was located. I had a slight "loose part rattle" I associated with the leaking shock, but after the new shocks were installed, you guessed it, the rattle is still there. It is ever so slight and you can only hear it when the radio is off or silent. I tried to look at all of the bushings and the like to no avail, I suspect its off to the front end shop for an inspection.
Any suggestions??

PLMK

 

[rwinch]

Unless its handling differently, I think you would be dropping some cash to do stuff you could do yourself, or at least disqualify.

Did you check:
- brakes
- anti-sway bar (links are notorious for breaking)
- any number of hoses/tubes/wire runs etc.
- body cladding/fog lights
- stuff stuck in the treads of the tires

All I am saying is that before you give the shop Carte Blanc to check for some "noise", you should look around thouroughly (and to your credit, it seems you did look at some stuff). The shop hours can add up to some big bucks!!

 

[TodzY2KExpy]

Originally posted by rwinch
- anti-sway bar (links are notorious for breaking)

So where exactly do the links break? I suspect this may be the case as this Expy came from the Urban jungle streets of Nawlins, the streets are TERRIBLE!! (read: roller coaster up and down-BUMPY) :barf:

 

[rwinch]

I believe they break at the bolted connections to either the lower control arm or on the anti-sway bar themselves. It has not happened to me, but they should be loose if they are broken. If they are near breaking, you can only tell if you remove them....which would give you a great excuse to put in a new set of links with urethane bushings!!!

 

[TodzY2KExpy]

Still going...

I have checked everything I can think 3-4 times, even the front end shop does NOT hear it. I have tightened the running boards, checked sway bar link ends, springs, bumper, NADA, cant find it but its STILL there!
Any other thoughts?

 

[Guest]

I have the same problem and can not figure out what it is on my 2000 Eddie Bauer. When you do, let us know so I can check the same. Thanks.

 

[Guest]

Sorry, forgot to log in. My Expedition makes the same noise. I to can not figure it out. I have checked the same possibilities mentioned. If you find out what is causing yours, let me know so I can check the same. Thanks.

 

[TodzY2KExpy]

SOLVED!!!!

SOLVED!!!

The Problem: the REAR SHOCKS on the lower mounts, those bolts wear from the movement and if you don't tighten the Shi'at out of the bolts, then they rattle, when I say tight, I am 6'1" and weight in just under 300 lbs and I was cranking on a 1/2" drive ratchet. Enough to move the entire truck, but guess what, NO more rattle!

BTW-I did find some other potential areas of concern:

Radiator fan shroud; held on with one 1 small bolt on each side and some sloppy clips at the bottom, a lot of movement and slack, major concern for a rattle prone area.

Fuel Tank plastic shield: major movement here too, another area of concern in regards to rattles.

Steering shaft from box: seems to be in two pieces and again, area for concern in regards to rattles.

Steering box plastic cover: this plastic cupped looking item is not very secure and it too could rattle.

Plenty of other minor places but these were my biggest finds today in the 4 hours I worked on this...Hope this helps someone else...

Thanks again guys!
:rockband:

 

[Guest]

Hey Guys....

I noticed on my 99 exp 2wd that the lower bushing on the rear shocks was terribly loose (i.e. worn out) and causing the same type of rattle you all were seeing. It looks to me almost like a design flaw in the lower shock bushing. I have looked at new shocks that are "supposed" to fit but the lower bushing on them looks nearly the same (soft neoprene, large hole, no steel insert) as my existing shocks with 67k miles. I used to sell auto parts (back in the day ) and we had access to a buyers guide to compare length/travel/bushing type and size of shocks. I am going to have a look around and see if I can figure out a replacement shock with some stronger bushings or maybe even some steel inserts in the bushings.....

I'll keep you all posted.

Cheers,

-Jay

 

[TodzY2KExpy]

...

Jay,
I found these two things will help:
New BOLTS, as the old ones, from the movement, wear down in the bushing area, and tighten the crap out of them, that fixes the design flaw and yes I concur on the flaw too.

 

[Guest]

Hey Todd...

I did find some shocks that Monroe sells as a "can also be used" replacement. Both upper and lower bushings are of a heavier neoprene (maybe poly but not sure yet) with steel inserts/sleeves. I am going to put my hands on them today just to be sure of what they are.

I'll let everyone know what I find.

Cheers,

-Jay

 

[rwinch]

Gentlemen, if you replace bolts with others that are not stock, or come with the shock kit (most don't), please remember that all suspension related hardware is GRADED (a strength designation). A minimum of grade 5 hardware, and preferably grade 8 should be used for shocks.

 

[Guest]

absolutely....

If possible, a local supplier will most likely have L9's (grade 11) available. Besides the fact they are anodized yellow/gold (looks cool) they are darn near unbreakable/unbendable. I started using them when available years ago and was told that they were designed for aircraft use.

Along those lines...

Does anyone have upper and lower rear shock bolt dimensions for a '99 expy 2wd 4.6 so I don't have to remove them to get the right ones??

Cheers,

-Jay

 

[Guest]

Hi all....

A replacement rear shock (gas charged) for my 99 expy 2wd that has urethane (sp?) bushings w/ steel insert sleeves is a Monroe 34671 or a Gabriel g63455. The normally chosen OEM replacement does NOT have steel inserts in the lower bushing and is prone to rattle. I also found out that the rear shock bolt size (upper and lower) is M12x1.75x73 as per FMC.

Cheers,

-Jay

 

[rwinch]

I have replaced shocks on my Exby twice, and many more times on other trucks that I have owned. I have always seen that they have the steel insert. Now here is the rub....they usually come in a small packet kit with the shock, for YOU to install. I would say that 25% of the shocks I have bought, did not have the kit, so I always make sure that they are included.