Bad Engine Vibration - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 11-11-2010, 04:55 PM Thread Starter
Forum Regular
 
Join Date: Sep 2010
Location: Kentucky
Posts: 72
Bad Engine Vibration

I installed my Prothane manual trans mounts yesterday and I expected vibrations to increase, but this is rediculous. Cruising and accelerating 2nd-5th is manageable, but srarting off in first through about 1500 rpm, it vibrates like crazy. My throttle body was pretty dirty, so I cleaned it as much as I could without removing it and it hasn't made any difference at all. Does it need time to relearn after a tb cleaining? Anybody else have this issue and fix it or do I have to get over it?
BigBirdL61 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 11-11-2010, 04:56 PM
Banned


 
Join Date: Feb 2009
Location: Mechancisburg, PA
Posts: 7,805
Send a message via AIM to camopaint0707
they will settle over time



camopaint0707 is offline  
post #3 of 9 (permalink) Old 11-11-2010, 04:58 PM
XFE
Wootsauce!
Staff Alumni
YourCobalt.com Premium Member


 
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 8,593
Send a message via AIM to XFE
give it a few hundred miles. they will break in.

---------- Post added at 07:58 PM ---------- Previous post was at 07:58 PM ----------

and the TB will be fine.




XFE is offline  
 
post #4 of 9 (permalink) Old 11-11-2010, 05:05 PM Thread Starter
Forum Regular
 
Join Date: Sep 2010
Location: Kentucky
Posts: 72
So you all know what I'm talking about with the bad low rpm vibration and it should get somewhat better with time? Or do yo mean vibration in general?
BigBirdL61 is offline  
post #5 of 9 (permalink) Old 11-11-2010, 05:20 PM
XFE
Wootsauce!
Staff Alumni
YourCobalt.com Premium Member


 
Join Date: Oct 2008
Location: Pittsburgh, PA
Posts: 8,593
Send a message via AIM to XFE
I know exactly what you mean. I was there when we did the install on Camos car and I've driven Foximus's car since we installed them in his car.

The vibs will die down after a while.




XFE is offline  
post #6 of 9 (permalink) Old 11-11-2010, 05:24 PM
Banned


 
Join Date: Feb 2009
Location: Mechancisburg, PA
Posts: 7,805
Send a message via AIM to camopaint0707
they really do, mine were awful at first but by the time I drove home they got better



camopaint0707 is offline  
post #7 of 9 (permalink) Old 11-11-2010, 06:00 PM Thread Starter
Forum Regular
 
Join Date: Sep 2010
Location: Kentucky
Posts: 72
I've driven maybe 50 miles since I put mine in and now that I'm trying to notice, it's gotten a little better.
BigBirdL61 is offline  
post #8 of 9 (permalink) Old 11-11-2010, 09:48 PM
YourCobalt of the Month WinnerCobalt Master


 
ff_drift_lol's Avatar
 
Join Date: Nov 2009
Location: lawn guyland
Posts: 1,890
make sure the bolts are tight too, use loc tite red. the strong stuff. they are aluminum i know u should use blue but trust me use red, these things take a ton of vibration and need that security. if you dont know how to apply loc tite correctly just pm me i'll guide u through it. and tight does not mean as hard as you can crank it, bolts do break and **** if i know breaking a bolt on a tranny mount sucks. as far as the vibrations, you got prothane solid mounts bro. all i have to say about those from word of mouth is good freakin luck.

ff_drift_lol is offline  
post #9 of 9 (permalink) Old 11-12-2010, 06:07 PM Thread Starter
Forum Regular
 
Join Date: Sep 2010
Location: Kentucky
Posts: 72
I didn't use loctite but I plan to go back and reinstall with it soon.
BigBirdL61 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome