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About my 1994 chevy cavalier?

1994 Chevy Cavalier--Vibration at Idle?

  • I have had a nasty engine vibration at idle in my 1994 Cavalier with the 4 cylinder/automatic trans that I can't seem to get my arms around. Raising the idle slightly by resting my foot on the accelerator eliminates the vibration, but I don't believe that the idle is adjustable on that car. I have replaced the front side engine mount that was broken. I've changed the plugs and wires (distributorless ignition) and the ignition coil with no effect. Oddly, when the front struts were changed (unrelated--leaking) the vibration diminished for a few weeks. I haven't crawled under the car to see if the lower engine mount is trashed; I understand its not as easy to replace as the front mount was. Has anyone had experience with this condition? Any ideas? The engine otherwise runs great and the fuel economy is 25 city 32 highway so I don't think its an internal engine/fuel/ignition problem. Any help would be appreciated

  • Answer:

    I have had the same vibration in this motor. What can happen is the right lower motor mount collapses. This hard to determine as it will not look broken or anything else, but the rubber inside it was not hard enough and it sags and acts like the motor is grounded out. This mount is on the right or passenger side at the back of the motor and you can feel it from above, but can't see it very well. I used to see if I could stick my finger in the lower part of the mount and if I couldn't I was pretty sure it had collapsed. Replacement is easy as only four nuts/bolts and no need to support anything. Good luck.

honda guy at Yahoo! Answers Visit the source

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I had similar problem on my Honda. I was told that front mount can be changed easily as they are solid piece. Rare are hyadraulic, therefore cost more and takes more time. Moreover when this problem happened, my engine was touching the fan which more turbulance. Changing front mounts took care of problem for only 6 months.

WISEMAN

if that car has the 2.2 in it ,i have had the same problem your having,i changed all the mounts and it seemed to help it ,but it never did go away,we ran a compression check and everything on it,after driving it for a while with all new mounts on it,one day it just went away,,2 weeks later though it came back,i changed the harmonic balancer in it,and never has it done it again,i don't know if that was the problem to start with,it too ran real good,and the mileage was good on it also,if its got a lot of miles on it ,the chain and gears for the timing will cause it to vibrate a lot,other wise it will run good,i have one right now that ran good up until it broke the chain on it,we have to pull the engine to completely clean the pan out on it,at the owners request though, were also going to check it for metal fragments,look at the back mount,it is harder to change,but that could be it,good luck on it.

dodge man

The lower mounts is probably bad - since the top was I would say that it also is bad. And also the transmission mounts also. Might as well get them all done while your down there,

cgriffin1972

Ggriffin1972 appears to have the right direction motor mount replacements - if you had to change the from just like ball joints we should be consistent to balance things.. i will go with Ggriffin too ... sometimes its just the process of elimination

agapetv

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