Motor Shaking Badly

rude_life

Member

Mar 30, 2005

372

0

16

Dec 12, 2005

#1

• Dec 12, 2005

• #1

Hey guys i havent been on in a while i hope everyone's doing great..Ive got some issue's with the stang...Anybody know why my motor shakes so bad? It shakes so bad that my shifter and my whole car rattles and its very uncomfortable to drive..I look at my motor and it just shakes all over the place. Not just at idle though..I wont even go full throttle because it rattles so bad i feel like somethings going to break..Its very annoying. I have jacked my car up and looked at my Harmonic balancer several times but i cant see any rubber coming out anywhere.

Thanks guys..as always
Kris

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Dec 12, 2005

#2

• Dec 12, 2005

• #2

Kris, does it do it while you are stationary (not moving, but revving the motor in neutral) or only while actually driving down the road.

Knowing that helps isolate the rotating drivetrain from the motor.

Good luck bud.

 

rude_life

Member

Mar 30, 2005

372

0

16

Dec 12, 2005

#3

• Dec 12, 2005

• #3

It does it while im in neutral and while im driving.

 

maypo59

New Member

Oct 20, 2003

194

0

0

Central Kentucky

Dec 12, 2005

#4

• Dec 12, 2005

• #4

check your harmonic balancer.

 

S

SuperDust22

The Power of Pixie Dust?!

Oct 19, 2003

1,821

0

0

Gilbert,AZ

Dec 12, 2005

#5

• Dec 12, 2005

• #5

harmonic balancer

and check your spark plugs

Dustin

 

BlackVert

15 Year Member

Oct 3, 2003

5,589

9

98

Bethesda, MD

Dec 12, 2005

#6

• Dec 12, 2005

• #6

maypo59 said:

check your harmonic balancer.

Click to expand...

:SNSign:

 

W

Westee

Member

Aug 16, 2005

36

0

6

Dec 12, 2005

#7

• Dec 12, 2005

• #7

check balancer and motor mounts

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Dec 12, 2005

#8

• Dec 12, 2005

• #8

Agreed. If it does it stationary, then the balancer is worth checking again. You can run a cylinder balance test to rule out a serious misfire.

Good luck.

 

blazrrr

New Member

Oct 25, 2005

15

0

1

Dec 12, 2005

#9

• Dec 12, 2005

• #9

I second the motor mounts.

 

final5-0

Mustang Master

Apr 6, 2003

6,817

12

79

DFW Texas

Dec 12, 2005

#10

• Dec 12, 2005

• #10

If you bring up the rpm's easy from idle .............

and still get the vibes ...........

that ought to rule out the mm's!

Grady

 

1105

I AM the random post master...bow down

May 3, 2003

3,841

0

0

Daytona Bch, FL

Dec 12, 2005

#11

• Dec 12, 2005

• #11

Have you checked your balancer while the car is running? If it's bad you should be able to see it shaking pretty badly. I looked at mine while the car wasnt running, and I couldnt find any rubber sticking out of it, pulled it off and then saw 1/2 of the rubber was missing.

 

rude_life

Member

Mar 30, 2005

372

0

16

Dec 12, 2005

#12

• Dec 12, 2005

• #12

Hey guys..Well i took it to my buddys shop..Mikes Performance Automotive in Lancaster, CA..No rubber showing..The harmonic balancer has slipped within itself and the 0 degree mark is not lined up with the hole anymore

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Dec 12, 2005

#13

• Dec 12, 2005

• #13

Glad you got it figured out Kris.

 

rude_life

Member

Mar 30, 2005

372

0

16

Dec 13, 2005

#14

• Dec 13, 2005

• #14

Thanks guys..Much appreciated, hopefully she doesent give way before i replace it...Can't my bottom end blow if that happens?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Dec 13, 2005

#15

• Dec 13, 2005

• #15

Absolutely Kris. I really would try not to drive it at all till the balancer is fixed. Borrow money if you have to, but get it replaced very very soon.

Good luck.

 

a50sn95

Founding Member

Oct 12, 2001

368

0

16

Elk Grove, CA

Dec 13, 2005

#16

• Dec 13, 2005

• #16

You mean like this?:

DON'T DRIVE IT.....

Balancer spun at 4500 rpm's....

 

rude_life

Member

Mar 30, 2005

372

0

16

Dec 13, 2005

#17

• Dec 13, 2005

• #17

Well..It has been shaking like that for a good three to four months..So is the crankshaft "un-balanced" being that it is making the whole car shake? Am I causing damage to my engine driving it under these conditions? What all is involved in the replacement of a harmonic balancer? What will I need to buy?

 

a50sn95

Founding Member

Oct 12, 2001

368

0

16

Elk Grove, CA

Dec 13, 2005

#18

• Dec 13, 2005

• #18

DON'T DRIVE IT....
It's not a hard job, you need a balancer, can borrow/rent the removal tool, and a big 15/16's socket and a breaker bar to get the bolt out. Hopefully it's a stick.
A search on balancer will find LOTS of threads....

 

final5-0

Mustang Master

Apr 6, 2003

6,817

12

79

DFW Texas

Dec 13, 2005

#19

• Dec 13, 2005

• #19

rude_life said:

Well..It has been shaking like that for a good three to four months..So is the crankshaft "un-balanced" being that it is making the whole car shake? Am I causing damage to my engine driving it under these conditions? What all is involved in the replacement of a harmonic balancer? What will I need to buy?

Click to expand...

I'm with the others here!

QUIT DRIVING IT!!!

then again .......... if it has been doing it for that long.

you possibly could have done some damage to your main & rod bearings.

You just need to fix it ...... right away!

Grady

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

34

129

Dec 13, 2005

#20

• Dec 13, 2005

• #20

It is not so much that the crankshaft is unbalanced - the H. damper quells torsional vibration (the fact that it is wrongly referred to as a 'balancer' can confuse its purpose).

When the piston explodes downward, it applies a torsional force against the crank, which can cause deflection and vibration or harmonics. The HD can help quell those vibes.

Grady, did you ever wrench on any old Triumphs? At higher RPM's the cam deflection was so bad that the ignition timing was all over the place. Thinking about this stuff reminded me of that for some reason.