Honda Car Forum

I have a 1990 Accord 5spd that is vibrating when sitting at an
idle.When I step on the gas and increase from the idle (750 RPM) to
about 1000 RPM the vibrating stops. From what I have read, it sounds
like I might have a broken motor mount. I checked the motor mounts and
they all look ok Anyone have any Ideas. thanks Jim

In article <fdjaovki5stg8ehlhdd81qprd2dogf69hn@4ax.com>,
downhill101@comcast.net wrote:

>I have a 1990 Accord 5spd that is vibrating when sitting at an
>idle.When I step on the gas and increase from the idle (750 RPM) to
>about 1000 RPM the vibrating stops. From what I have read, it sounds
>like I might have a broken motor mount. I checked the motor mounts and
>they all look ok Anyone have any Ideas. thanks Jim


Not exactly sure about a 90 with MT, but my 91 with AT supposedly had a
"hydraulic" MM.
At an idle, it "softens" to absorb vibration.
IIRC, It's the one toward the firewall???

downhill101@comcast.net wrote in message news:<fdjaovki5stg8ehlhdd81qprd2dogf69hn@4ax.com>. ..
> I have a 1990 Accord 5spd that is vibrating when sitting at an
> idle.When I step on the gas and increase from the idle (750 RPM) to
> about 1000 RPM the vibrating stops. From what I have read, it sounds
> like I might have a broken motor mount. I checked the motor mounts and
> they all look ok Anyone have any Ideas. thanks Jim

It's problem on sensor. Like Idle sensor which forsees the conditions..
The sensor is a computerized like chip.

On the accords with automatic transmissions I see there is a vacuum
controled rear motor mount. Is that what you are talking about? It
looks like the one on the manual transmissions is just a dumb old
piece of rubber. Or maybe I am wrong
On Thu, 09 Oct 2003 13:49:49 -0800, bkapaun@hotdeletemail.com (Bill
Kapaun) wrote:

>In article <fdjaovki5stg8ehlhdd81qprd2dogf69hn@4ax.com>,
>downhill101@comcast.net wrote:
>
>>I have a 1990 Accord 5spd that is vibrating when sitting at an
>>idle.When I step on the gas and increase from the idle (750 RPM) to
>>about 1000 RPM the vibrating stops. From what I have read, it sounds
>>like I might have a broken motor mount. I checked the motor mounts and
>>they all look ok Anyone have any Ideas. thanks Jim
>
>
>Not exactly sure about a 90 with MT, but my 91 with AT supposedly had a
>"hydraulic" MM.
>At an idle, it "softens" to absorb vibration.
>IIRC, It's the one toward the firewall???

<downhill101@comcast.net> wrote in message
news:fdjaovki5stg8ehlhdd81qprd2dogf69hn@4ax.com...
> I have a 1990 Accord 5spd that is vibrating when sitting at an
> idle.When I step on the gas and increase from the idle (750 RPM) to
> about 1000 RPM the vibrating stops. From what I have read, it sounds
> like I might have a broken motor mount. I checked the motor mounts and
> they all look ok Anyone have any Ideas. thanks Jim

Your problem might have various causes. The car might not be getting enough
air, fuel or spark.
I've seen often a car which will stall when left at idle but runs ok when
you give it a little gas.
I think you should start with the essentials. How long has it been since the
follwoing were checked/replaced:
spark plugs
ignition cables
ditributor cap and rotor
air filter
fuel filter
etc?

I first started noticing the problem about a 6 months ago but it was
not as bad as it is now . I replace the spark plugs distributor cap
and rotor and air filer at that time and I didn,t see much of a
change. I just got use to the vibrating. Now it gets pretty bad. But
yes your right, The gas filter has 100,000 miles on it and the
ignition wres are the originals.

downhill101@comcast.net wrote in message news:<1hoeov8om8v17bfv86c75skpj38a01179d@4ax.com>. ..
> I first started noticing the problem about a 6 months ago but it was
> not as bad as it is now . I replace the spark plugs distributor cap
> and rotor and air filer at that time and I didn,t see much of a
> change. I just got use to the vibrating. Now it gets pretty bad. But
> yes your right, The gas filter has 100,000 miles on it and the
> ignition wres are the originals.

I told you it's sensor thing. I have the same problem. my car idlee
the mile gadge is abnormal only during the starting time. If I push the
gas, it goes away. So I do not have to worry about since it does not
affect on driving.