Help about engine mount

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Old 15 Aug 2003, 09:43 pm   #1 (permalink)
Jeff
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Default Help about engine mount

Hi,
My car is a 90' Camry, 4 cylinder, automatic, 100k mile. When I drive on
uphill at highway, if I press gas harder to maintain the speed not too low.
There is a vibration noise coming from the front of the passenger side.
Generally the noise happens when the speed is at about 45 to 50 mile per
hour (or 70 to 80 km per hour). Excuse me I have to write my problem in
detail in the following.

From the posts of newsgroup, and the direction of the noise, I think the
right engine support needs to be changed. I bought one made by Mevotech,
A8207, the model number and the shape are both like EM-8207 from Westar. The
engine mount is not the dog-bone for the year 92 and after, and is not like
the figure (the screw at the center is horizontal, which is used for earlier
than 88' Camry?) in Haynes Repaire book. There is a screw vertically on the
top of the mount on my car. A right angle thick aluminium bracket connects
the timing chain cover and the top of the engine mount. BTW, when I bought
the engine mount, the first two auto shops ordered the front and rear engine
mount for me respectively. It seems there are some problems in their
computer data. The third auto shop gives me the right part at the end. Today
I change the engine mount. To my surprise, I find it is difficult to put the
new one back on my car. I cannot make three holes at the base for bolt, nuts
and the top screw hole at the right place at same time. When I put three
holes at the base in the right places, the top hole was eccentric. I think
this may be the cause of the jack was under the oil pan, this was at the
right side of the front body of the car, not at the center of the car.
Finally when I want to drive my car carefully to the garage 200 meters away
from my parking lot, I found the engine moving made the top screw hole
almost in the right place. But I cannot screw the bolt in, there was still
about 1 to 2 mm eccentricity. When the car drove in the reverse direction,
the top hole position is much better than that of the car in front
direction. Although I tried using a break bar to move the aluminium bracket,
I am not success because I am afraid of using too much force would bring me
more trouble.

The technician used a break bar to level the aluminium bracket forward
horizonly. I think his manner and force were reasonable. Now all the bolts
and nut are in the right places. But I find my is not like before anymore. I
can feel a heavy vibration of the car body. When the car is at "N", much
less vibration can be felt. Excuse me there is no rpm meter at the dash
board, I cannot tell the exact rpm number. I feel the car is more heavy.
When the car is at stop, it will not move if I don't press the gas. Before
the engine mount changing, my car is more quiet. When I press the gas, the
car moves very freely and instantly. And the acceleration is much rapid than
present.

I don't know what's the problem. Just before changing the engine mount, I
changed the power steering fluid. I don't think there are some relation with
the vibration. I have compared the new part and the original mount, no
difference was found. And I don't think I lift the motor too high although I
did several times to try put the new and the original mount in place. I have
tried to loose two nuts and one bolt at the base in order to accormodate to
a better position freeely later. I feel the car moves freely a little. If I
don't press gas at a stop, the car can moves forward. But the vibration is
still there.
Due to this terrible result, I have not tried the uphill on highway. Could
you help me?

Any suggestion is highly appreciated.


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Old 16 Aug 2003, 05:07 am   #2 (permalink)
Jeff
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Default Re: Help about engine mount

addition:
I had to jack up the engine about 1 inch more in order to move the engine
mount out. According to Haynes repair manual, I put the jack under the oil
pan with a block of wood. Is there the possibility that some axles were
slanted because of the lifting force? I am realy worry I have some big
problems now. Please help me.


Thanks in advance.


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Old 16 Aug 2003, 07:56 am   #3 (permalink)
Dave Zane
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Default Re: Help about engine mount

Just a guess here, but I think these should all be replaced at the same
time. Now you have one tight, new mount working against the older
softer mounts. Does your vibrations seem to be coming from the left and
the rear?
Just a suggestion,
Dave

> From the posts of newsgroup, and the direction of the noise, I think the
> right engine support needs to be changed.


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Old 16 Aug 2003, 05:17 pm   #4 (permalink)
Jeff
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Default Re: Help about engine mount

Thanks for your reply.
From the previous posts on this newsgroup, someone changed one dog-bone with
good results. They didn't say all the engine mounts had to be changed. For
my case, I cannot say where the vibration comes from. It seems the whole
front generates a hum noise. Anyway, I appreciate your suggestion.


"Dave Zane" <zane@magnaownersoftexas.net> a écrit dans le message de news:
3F3E2A74.7070405@magnaownersoftexas.net...
> Just a guess here, but I think these should all be replaced at the same
> time. Now you have one tight, new mount working against the older
> softer mounts. Does your vibrations seem to be coming from the left and
> the rear?
> Just a suggestion,
> Dave
>



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Old 19 Aug 2003, 09:50 pm   #5 (permalink)
Jeff
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Default Re: Help about engine mount

Thank you very much. I cannot bear the vibration, so I replace the original
mount back. Now, my car is quiet again. What you said is right, I think.


"Dave Zane" <zane@magnaownersoftexas.net> a écrit dans le message de news:
3F3E2A74.7070405@magnaownersoftexas.net...
> Just a guess here, but I think these should all be replaced at the same
> time. Now you have one tight, new mount working against the older
> softer mounts. Does your vibrations seem to be coming from the left and
> the rear?
> Just a suggestion,
> Dave
>



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