Honda Car Forum

Hi,

I have a 92 Integra GS with a replaced motor. When in neutral and engine
running, no vibration at all.
But when I stick the gear into D, then the car vibrates and when I stop at a
stop light.

Any ideas why the car vibrates when in gear?

Motor mounts? If motor mount was the problem, wouldn't it vibrate all the
time, even in Neutral.
Rear transmission mount? Anyone know where this is located and is it easy
to fix?

Thanx in advance for any advice.

"Hello" <hello@hello.com> wrote in
news:HmNpf.151134$Gd6.139479@pd7tw3no:

> Hi,
>
> I have a 92 Integra GS with a replaced motor. When in neutral and
> engine running, no vibration at all.
> But when I stick the gear into D, then the car vibrates and when I
> stop at a stop light.
>
> Any ideas why the car vibrates when in gear?
>
> Motor mounts?



Yep.



> If motor mount was the problem, wouldn't it vibrate all
> the time, even in Neutral.




No. When in neutral, the idle is elevated, and the engine's vibrations are
not as pronounced.



> Rear transmission mount? Anyone know where this is located and is it
> easy to fix?



Costs about $100 each for each part. Not including the labor.

I'd just leave it. When the weather warms up, the vibration should be much
reduced.

You have two (lower) engine mounts at either side (front and rear) of the
bottom of the engine where the bellhousing joins the block. You also have
two *upper* mounts. They attach the engine/transmission to the inner
fenders.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

A compression test or "cylinder balance" test will tell if one or more
cylinders is bad, which would cause a lumpy idle.

Your idle speed in D may be separately adjustable. You can raise it if
needed.

Motor mounts only damp minor vibrations in the process of transmitting
major vibrations to the body.

One symptom of a broken mount is a feeling of "wind up" when
accelerating, that is, a lag in response to the throttle.

"Hello" <hello@hello.com> wrote in message
news:HmNpf.151134$Gd6.139479@pd7tw3no...
> Hi,
>
> I have a 92 Integra GS with a replaced motor. When in neutral and engine
> running, no vibration at all.
> But when I stick the gear into D, then the car vibrates and when I stop at
> a stop light.
>
> Any ideas why the car vibrates when in gear?
>
> Motor mounts? If motor mount was the problem, wouldn't it vibrate all the
> time, even in Neutral.
> Rear transmission mount? Anyone know where this is located and is it easy
> to fix?
>
> Thanx in advance for any advice.
>
Maybe it uses the hydraulic rear mount that is used in Hondas of that
vintage with automatic trannies. If that's what you have, the mount is
vacuum controlled (follow the vacuum line up to the controller valve,
probably on the top of the firewall.). Applying vacuum to the mount should
soften it and reduce the vibrations. The control valve is to apply vacuum
during idle in gear, and release the vacuum other times to firm up the
engine mounting.

In my daughter's 93 Accord the vacuum operated valve on the mount is sticky
and doesn't always operate unless I nudge it with my fingers. You can try
the same on yours... or at least watch to see if the lever moves.

Mike

"Michael Pardee" <michaeltnull@cybertrails.com> wrote in
news:_uednWGt8v7fQDXeRVn-qg@sedona.net:

> "Hello" <hello@hello.com> wrote in message
> news:HmNpf.151134$Gd6.139479@pd7tw3no...
>> Hi,
>>
>> I have a 92 Integra GS with a replaced motor. When in neutral and
>> engine running, no vibration at all.
>> But when I stick the gear into D, then the car vibrates and when I
>> stop at a stop light.
>>
>> Any ideas why the car vibrates when in gear?
>>
>> Motor mounts? If motor mount was the problem, wouldn't it vibrate all
>> the time, even in Neutral.
>> Rear transmission mount? Anyone know where this is located and is it
>> easy to fix?
>>
>> Thanx in advance for any advice.
>>
> Maybe it uses the hydraulic rear mount that is used in Hondas of that
> vintage with automatic trannies.



It does not.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

misterbeets@gmail.com wrote in
news:1135138159.015483.207640@g44g2000cwa.googlegr oups.com:

> A compression test or "cylinder balance" test will tell if one or more
> cylinders is bad, which would cause a lumpy idle.
>
> Your idle speed in D may be separately adjustable. You can raise it if
> needed.
>
> Motor mounts only damp minor vibrations in the process of transmitting
> major vibrations to the body.



In very cold weather (the OP is in Canada), the mounts get quite hard, and
transmit considerable vibration to the steering wheel. This goes away as it
warms up.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

misterbeets@gmail.com wrote in
news:1135138159.015483.207640@g44g2000cwa.googlegr oups.com:

> A compression test or "cylinder balance" test will tell if one or more
> cylinders is bad, which would cause a lumpy idle.
>
> Your idle speed in D may be separately adjustable. You can raise it if
> needed.
>
> Motor mounts only damp minor vibrations in the process of transmitting
> major vibrations to the body.



In very cold weather (the OP is in Canada), the mounts get quite hard, and
transmit considerable vibration to the steering wheel. This goes away as it
warms up.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

misterbeets@gmail.com wrote in
news:1135138159.015483.207640@g44g2000cwa.googlegr oups.com:

> A compression test or "cylinder balance" test will tell if one or more
> cylinders is bad, which would cause a lumpy idle.
>
> Your idle speed in D may be separately adjustable. You can raise it if
> needed.
>
> Motor mounts only damp minor vibrations in the process of transmitting
> major vibrations to the body.



In very cold weather (the OP is in Canada), the mounts get quite hard, and
transmit considerable vibration to the steering wheel. This goes away as it
warms up.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/