Interesting Vibration Issue - Focus Fanatics
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Focus Fanatics > Ford Focus Third Generation > MK3 Focus

MK3 Focus The place to chat about general questions, window tinting, exterior body, interior and lighting upgrades for the third generation 2012-Current Focus.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 01-10-2014, 09:19 PM   #1
Joeywhat
Strichmädchen & Koks
 
Joeywhat's Avatar
 
Join Date: Apr 2011
Fan#: 85247
Location: Brighton, MI
What I Drive: 2014 Mustang 3.7L SGM

Posts: 2,646
FF Reputation: 9 Joeywhat Good Standing Member
Buy-Sell-Trade Rating: (1)
Interesting Vibration Issue

I've had an interesting issue the past few days with engine vibrations. Started once it was SUPER cold (0*F, and down to -15), and I just assumed it was the motor mounts being frozen. It would typically go away fairly quick.

Fast forward to yesterday, and I can hear an intermittent and rhythmic vibration at certain RPMs. The car was plenty warm by now, and it seemed to happen at higher RPMs. It wasn't too noticeable, but it was there. Couldn't really figure out the issue so I didn't think much of it. It was definitely from the engine, though, and not wheel/tire related.

No onto today, it's 34*F outside. First trip this morning and the vibrations were AWFUL. Like, something is going to blow up bad. Open the hood and it's not the passenger side motor mount, might be the trans mount but sounds like it's coming from beneath the engine. I found that by putting a little pressure on the engine (just pushing on the valve cover), I can get the vibration to completely go away. It drives like this the entire 30 minute drive, then stops once I start it up for the return trip. Haven't the issue again today.

Any thoughts on what this was? I figured it was the cold, but with it being above freezing today I don't see it being 100% temperature related. There was a bit of snow in the lower engine compartment that came in through the bumper, maybe some built up ice right against the block? I figured running the engine for a few minutes would break that up, though...

Harmonic balancer issue? I don't know how the operate inside, would temperature effect this item?

I'll report back tomorrow with how it starts up in the morning...wonder if it'll vibrate again.


__________________
Hatch Nation #29
Joeywhat is online now  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 01-11-2014, 07:23 AM   #2
kam327
-----<M>-----
 
kam327's Avatar
 
Join Date: Feb 2012
Fan#: 94700
Location: Tampa, FL
What I Drive: '14 Ruby Ti w/ Handling Pkg

Posts: 2,367
FF Reputation: 11 kam327 Great Standing Member
Buy-Sell-Trade Rating: (0)
How do you know it's not the pass side (RH) mount? My understanding is you can't see all the failure modes of a mount. Could also be the dog bone mount underneath maybe?

I have a moderate increase in engine vibes in general, I plan to play around with the mounts this weekend. If you jack the engine slightly from the oil pan and then from the tranny and see which side results in greater vibration reduction, that should tell you what mount it is.
kam327 is offline  
    Reply With Quote
Old 01-11-2014, 09:28 AM   #3
dan50
Focus Addict
 
Join Date: Nov 2011
Fan#: 91789
Location: Too much info, IL
What I Drive: 2012 SEL White Platinum 5 Dr 302A

Posts: 1,152
FF Reputation: 11 dan50 Great Standing Member
Buy-Sell-Trade Rating: (0)
Is the vibration proportional to engine speed or road speed? If it's road speed my experience is that OEM tires on the Focus can flat-spot a bit, especially when it's cold. The frequency of the vibrations can change as the flat spots on each tire contact the road at different times. In 0 degree weather, it can take considerable time for them to go away.

I suspect you're commenting on a high-frequency, engine-related vibration though, in which case this is of no help.
dan50 is offline  
    Reply With Quote
Old 01-11-2014, 10:11 AM   #4
10'ses
Focus Jr. Enthusiast
 
Join Date: Jun 2010
Fan#: 75646
Location: Metro-Detroit, MI
What I Drive: 2012 Blue Candy SEL Sedan DCT

Posts: 47
FF Reputation: 1 10'ses Good Standing Member
Buy-Sell-Trade Rating: (0)
Posted via FF Mobile

Mine got a crapload of snow jammed up behind the engine that froze with our subzero temps that caused a nasty vibration (sounded like a mid90s civic to me). Thankfully it all melted with the rain yesterday and things seem to be back to normal.
10'ses is offline  
    Reply With Quote
Old 01-11-2014, 04:57 PM   #5
Joeywhat
Strichmädchen & Koks
 
Joeywhat's Avatar
 
Join Date: Apr 2011
Fan#: 85247
Location: Brighton, MI
What I Drive: 2014 Mustang 3.7L SGM

Posts: 2,646
FF Reputation: 9 Joeywhat Good Standing Member
Buy-Sell-Trade Rating: (1)
I'm inclined to believe the snow is doing it, but that just seems weird to me. I don't see how a chunk of ice stays lodged against an engine for 30+ minutes...plus, the worst happened after all the snow had been (for the most part) removed, so I wasn't throwing snow/ice through the bumper any more.

I'm also wondering if the harmonic balancer was screwed up, but then that doesn't explain why pushing the motor a little stopped the vibration.
__________________
Hatch Nation #29
Joeywhat is online now  
    Reply With Quote
Old 01-11-2014, 11:04 PM   #6
10'ses
Focus Jr. Enthusiast
 
Join Date: Jun 2010
Fan#: 75646
Location: Metro-Detroit, MI
What I Drive: 2012 Blue Candy SEL Sedan DCT

Posts: 47
FF Reputation: 1 10'ses Good Standing Member
Buy-Sell-Trade Rating: (0)
Posted via FF Mobile

It could be something more but mine didn't melt until I drove 30 minutes in a heavy rain (5 days later). Once I warmed up above freezing, I popped the hood and could see all the snow jammed behind the engine near the tranny. Mine sounds like normal now though, I think it's just a poor winter design. Then again I put on blizzaks and fly through the snow like I'm in a hummer haha
10'ses is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:31 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information : Site Map

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.