[95Cobra5L]

I recently installed some BMR lower control arms on my 14 gt. Now I am getting a metal on metal grinding sound.

I thought it might be the e brake hung up so I disconnected it from both sides and took it for a drive. No luck.

The sound doesn't change if I am braking or not.

Any ideas or anyone else have this problem?

Thanks for the help.

Brandon

 

[NoVa5.0]

Which control arms did you replace? I'm guessing rear since you mentioned the e-brake.

It's gonna be tough for anyone to diagnose the problem over the internet.

 

[csamsh]

I bet you didn't put the E-Brake retaining clip back on in the correct manner. Take a picture of where the cable meets caliper, and the clip, and we can help

 

[Blazin72]

When do you get the metal on metal sound? Are you positive it's a metal on metal sound and not the bushings making noise?

 

[Canuck89]

Even with proper lubrication, I noticed a significant increase in noise after installing my BMR LCAs - TCA019. Can hear a metallic steel-on-steel-almost-"whirring" coming from the rear -- let me be clear, it's not a squeal but at times could be described as high pitch. Volume and pitch increase as I accelerate and decrease as I let off the gas. These characteristics are the same when in neutral (well obviously not the acceleration part. . . haven't quite figured out how to accelerate w/o being in gear yet). . .

You could always try throwing the stock parts back on to see if it resolves itself. I plan on doing that in the spring. It will also give me a chance to inspect the bushings. wrenchin.gif

 

[Blazin72]

Can hear a metallic steel-on-steel-almost-"whirring" coming from the rear -- let me be clear, it's not a squeal but at times could be described as high pitch. Volume and pitch increase as I accelerate and decrease as I let off the gas.

Tis the problem with troubleshooting noises over the internet.

It could be:
Mechanical noise from normal operation
Mechanical noise from abnormal operation
Noises from loose parts
Noises from damaged parts
Noises from improperly installed parts
Noises from worn parts
Noises from bushings
Noises as a result of installing parts that transfer normal noises more than factory parts
Noises that always existed but the owner never paid attention to

Etc, etc, etc....

 

[Mustang concept]

E break clip I did the same thing that etra 1/4 inch it's off it pulls on your ebrake. Dose it feel like your car is slow down as if it's breaking

 

[edillen3953]

Normal sound of the poly bushings. One reason ford went with the rubber ones is good NVH. Mine is noticable but not loud at all.

 

[Blazin72]

Normal sound of the poly bushings. One reason ford went with the rubber ones is good NVH. Mine is noticable but not loud at all.

If you are hearing noises from your poly bushings then you should lubricate them. The little grease packets that come with the bushings aren't nearly enough.

Something like this and a grease gun will do the trick:
http://www.summitracing.com/parts/hss-3101/overview/

 

[PMDmustang13]

Did you follow the installation instructions? Just asking because some people ignore instructions. Anyway hopefully you greased the bearings before you installed them and orientated the LCA's the proper way in accordance with the instructions. Otherwise there will be noise and maybe some binding action.

 

[Blackpenguin69]

i got a clicking sound after mine were installed. Almost sounds like a rock in the tire. I can only hear it under about 10 mph with my foot off the gas, otherwise the engine overpowers the sound. The noise gets slower with speed but not quieter. Im pretty sure is drivetrain related though and the suspension just makes it noticeable.

 

[pokkus]

I just installed my BMR rear LCAs and relocation brackets and I do not hear any extra noises.

 

[Mike13gt]

My BMR LCAs are a little noisy also, not loud by any means. It almost sound like slight static coming from my rear speakers.

 

[BMR Tech]

Aftermarket LCA with Poly Bushings will definitely increase NVH.

The best thing to do is to ensure they are installed properly, lubricated with a quality synthetic lubricant, and ensure the bolts are torqued to atleast 129ftlbs.

 

[SquidBillyPaul]

These characteristics are the same when in neutral (well obviously not the acceleration part. . . haven't quite figured out how to accelerate w/o being in gear yet). . .

A steep hill! rolsmile.gif

 

[95Cobra5L]

Here is a picture of one of the retaining clips.

i am coming to the conclusion it is a normal noise that has just increased to a noticeable level.

Thanks for the replies.

 

[edillen3953]

Does it sound like a metallic "sshhhhh" in the background? Thats what mine do. They are lubed liberally due to the zerk fittings.

 

[95Cobra5L]

Yeah that's a good way to describe it.

 

[edillen3953]

It's the bushings and I would describe it as normal. New cars have soooo many compromises in the name of reduced NHV. The poly won't be as quiet as the soft rubber ones.

 

[pokkus]

I just installed my BMR rear LCAs and relocation brackets and I do not hear any extra noises.

Mine is also making a squeaking noises right now. It feels that cold temperatures are worse and it gets little better when day gets warmer.