Intense Engine Vibration Advice.
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
Intense Engine Vibration Advice.
After driving the car hard yesterday for most of the day the car started having intense engine vibration than vibrates the whole car.
It happens at lower RPM between 1800 and 2700 RPM
Does it with and without clutch engaged, and with and without being in gear.
Could it maybe be an engine mount? (I was doing a lot of hard cornering.)
What's my starting point for diagnostics?
It happens at lower RPM between 1800 and 2700 RPM
Does it with and without clutch engaged, and with and without being in gear.
Could it maybe be an engine mount? (I was doing a lot of hard cornering.)
What's my starting point for diagnostics?
Last edited by steven31371; Apr 21, 2013 at 08:05 PM.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I had an old Ford that threw one of the springs out of the clutch during some spirited driving. That would throw things out of balance. If there are no engine codes, I would start looking for something that would upset the balance.
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Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
I know you said it does it with the clutch disengaged but...when my prop shaft bushings were on their way out I had a vibration under moderate acceleration. It wouldn't do it accelerating easily or hard. It felt like I was running over those rumble strips on the edge of highways.
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
Thanks guys, found the problem.
The X-pipe I have allows you to keep the rear O2 sensors...on one the thread was a little gimpy so I had used some high temp gasket maker and some JB weld to hold it in place....when I was at the track yesterday my last lap was the fastest and I guess the JB Weld gave up the ghost lol....blew the O2 sensor out of the whole...at the right RPM it was vibrating the loose sensor between the bottom of the car and the MidPipe.
Easy fix, those O2's have been deactivated and are there just for show for the smog guy....will just remove them and block off the bung.
As an aside, Charlie ported my oil pump instead of replacing or upgrading it....my oil pressures are much higher and better than before, and after a full day of hard track driving with five 20 minute session where my RPM was over 5000 most of the time my oil temps never went over 259 degrees....was pretty impressed with that on this 130,000 mile car.
The X-pipe I have allows you to keep the rear O2 sensors...on one the thread was a little gimpy so I had used some high temp gasket maker and some JB weld to hold it in place....when I was at the track yesterday my last lap was the fastest and I guess the JB Weld gave up the ghost lol....blew the O2 sensor out of the whole...at the right RPM it was vibrating the loose sensor between the bottom of the car and the MidPipe.
Easy fix, those O2's have been deactivated and are there just for show for the smog guy....will just remove them and block off the bung.
As an aside, Charlie ported my oil pump instead of replacing or upgrading it....my oil pressures are much higher and better than before, and after a full day of hard track driving with five 20 minute session where my RPM was over 5000 most of the time my oil temps never went over 259 degrees....was pretty impressed with that on this 130,000 mile car.
Last edited by steven31371; Apr 23, 2013 at 02:25 AM.
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
Balancer along with most other pulleys and tensioners etc have been replaced...had the crank pinned for added measure too even though its not boosted.
Last edited by steven31371; Apr 23, 2013 at 02:22 AM.
Melting Slicks
Joined: Mar 2004
Posts: 2,390
Likes: 405
From: Horseshoe Bend ID
Thanks guys, found the problem.
The X-pipe I have allows you to keep the rear O2 sensors...on one the thread was a little gimpy so I had used some high temp gasket maker and some JB weld to hold it in place....when I was at the track yesterday my last lap was the fastest and I guess the JB Weld gave up the ghost lol....blew the O2 sensor out of the whole...at the right RPM it was vibrating the loose sensor between the bottom of the car and the MidPipe.
Easy fix, those O2's have been deactivated and are there just for show for the smog guy....will just remove them and block off the bung.
As an aside, Charlie just ported my oil pump instead of replacing of upgrading it....my oil pressures are much higher and better, and after a full day of hard track driving my oil never went over 259 degrees....was pretty impressed with that on this 130,000 mile car
The X-pipe I have allows you to keep the rear O2 sensors...on one the thread was a little gimpy so I had used some high temp gasket maker and some JB weld to hold it in place....when I was at the track yesterday my last lap was the fastest and I guess the JB Weld gave up the ghost lol....blew the O2 sensor out of the whole...at the right RPM it was vibrating the loose sensor between the bottom of the car and the MidPipe.
Easy fix, those O2's have been deactivated and are there just for show for the smog guy....will just remove them and block off the bung.
As an aside, Charlie just ported my oil pump instead of replacing of upgrading it....my oil pressures are much higher and better, and after a full day of hard track driving my oil never went over 259 degrees....was pretty impressed with that on this 130,000 mile car
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
It did sound like something was HORRIBLY WRONG, because besides the vibration I was hearing a metal clunking sound occasionally when the sensor was bouncing around in there.
Couldn't figure out why it still felt like it had the same power though with all those horrible sounds lol
Glad it was just that.
Le Mans Master
Joined: Jul 2010
Posts: 5,986
Likes: 719
yeah I was trying not to get too alarmed until I found the problem but in the back of my mind I was freakin out a little bit, and planning the next engine budget and choices.
It did sound like something was HORRIBLY WRONG, because besides the vibration I was hearing a metal clunking sound occasionally when the sensor was bouncing around in there.
Couldn't figure out why it still felt like it had the same power though with all those horrible sounds lol
Glad it was just that.
It did sound like something was HORRIBLY WRONG, because besides the vibration I was hearing a metal clunking sound occasionally when the sensor was bouncing around in there.
Couldn't figure out why it still felt like it had the same power though with all those horrible sounds lol
Glad it was just that.
Le Mans Master
Joined: Jul 2010
Posts: 5,986
Likes: 719
Thanks guys, found the problem.
The X-pipe I have allows you to keep the rear O2 sensors...on one the thread was a little gimpy so I had used some high temp gasket maker and some JB weld to hold it in place....when I was at the track yesterday my last lap was the fastest and I guess the JB Weld gave up the ghost lol....blew the O2 sensor out of the whole...at the right RPM it was vibrating the loose sensor between the bottom of the car and the MidPipe.
Easy fix, those O2's have been deactivated and are there just for show for the smog guy....will just remove them and block off the bung.
As an aside, Charlie ported my oil pump instead of replacing or upgrading it....my oil pressures are much higher and better than before, and after a full day of hard track driving with five 20 minute session where my RPM was over 5000 most of the time my oil temps never went over 259 degrees....was pretty impressed with that on this 130,000 mile car.
The X-pipe I have allows you to keep the rear O2 sensors...on one the thread was a little gimpy so I had used some high temp gasket maker and some JB weld to hold it in place....when I was at the track yesterday my last lap was the fastest and I guess the JB Weld gave up the ghost lol....blew the O2 sensor out of the whole...at the right RPM it was vibrating the loose sensor between the bottom of the car and the MidPipe.
Easy fix, those O2's have been deactivated and are there just for show for the smog guy....will just remove them and block off the bung.
As an aside, Charlie ported my oil pump instead of replacing or upgrading it....my oil pressures are much higher and better than before, and after a full day of hard track driving with five 20 minute session where my RPM was over 5000 most of the time my oil temps never went over 259 degrees....was pretty impressed with that on this 130,000 mile car.
:flaghalfma st:
Thread Starter
Burning Brakes
Joined: Jun 2012
Posts: 1,240
Likes: 1
From: Orange County California
Removed the redundant rear O2 sensors and blocked off the bungs and she is running like scalded cat again without any disturbing noises ;-)
Last edited by steven31371; Aug 4, 2013 at 11:31 PM.