95 - shaky at idle - 4cyl - 60Kmiles

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Old 16 Apr 2005, 10:33 pm   #1 (permalink)
Mike R
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Default 95 - shaky at idle - 4cyl - 60Kmiles

When the car is warm and in drive at the stoplight, the car shakes a little.
I had the computer reset and the mechanic said he can manually adjust the
idle a 100-200 rpms or so until the shaking goes away.

The car runs great otherwise.

Is there anything to look for?


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Old 17 Apr 2005, 07:23 am   #2 (permalink)
m Ransley
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Default Re: 95 - shaky at idle - 4cyl - 60Kmiles

What does it idle at. A tune up would likely cure it

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Old 17 Apr 2005, 08:20 am   #3 (permalink)
Daniel
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Default Re: 95 - shaky at idle - 4cyl - 60Kmiles

They all do that.
-------
Adding Redline complete fuel system cleaner may help if you keep using
it through the miles. (read label directions for continuous use)
Be sure to check the "dog bone" engine moving control rod near the top
of the engine connecting to the passenger side strut tower. Look for
signs of cracking in the rubber isolator and replace the part if needed
to protect the more expensive front and rear engine mounts from
additional stress.
A variety of smaller items, spark plug wires, timing belt aging and
minor stretch, PCV valve, etc., can contribute, but primarily it is the
design of the four cylinder engine. Toyota sets the electronically
controlled idle to maximize fuel economy, and with four cylinders they
fire only once per 180 degrees of crankshaft rotation, so at low idle
speed, under load from the torque converter slippage, there is some
vibration.
My mileage is more than double yours, but by keeping all mechanical
items in top condition, the vibration is usually quite mild and not
objectionable.

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Old 17 Apr 2005, 12:13 pm   #4 (permalink)
Jason James
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Default Re: 95 - shaky at idle - 4cyl - 60Kmiles


"Mike R" <something@yahoo.com> wrote in message
news:wOk8e.2645$mG3.2384@twister.nyroc.rr.com...
> When the car is warm and in drive at the stoplight, the car shakes a

little.
> I had the computer reset and the mechanic said he can manually adjust the
> idle a 100-200 rpms or so until the shaking goes away.
>
> The car runs great otherwise.
>
> Is there anything to look for?


I have close to the same model ('96) and it doesnt shake at idle,..in fact
the engine is very firmly mounted.

One thing I have noticed is on the road as the car is slowing (no braking,
just foot off throttle) the engine does transmit a slight hi-freuency
vibration into the body,

If yours has marked vibration at idle,..I'd be checking things like engine
mounts, try to rock the motor with your hands, engine off,.. you should be
able to move it less than 1/4".

Jason


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Old 18 Apr 2005, 11:39 pm   #5 (permalink)
Mike R
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Default Re: 95 - shaky at idle - 4cyl - 60Kmiles

> What does it idle at. A tune up would likely cure it

The first line below the 1000RPM mark on the OEM Tach.

It has been tuned, and motor mounts replaced.


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Old 19 Apr 2005, 03:40 am   #6 (permalink)
Jason James
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Default Re: 95 - shaky at idle - 4cyl - 60Kmiles


"Mike R" <something@yahoo.com> wrote in message
news:MX%8e.3660$XF3.239@twister.nyroc.rr.com...
> > What does it idle at. A tune up would likely cure it

>
> The first line below the 1000RPM mark on the OEM Tach.
>
> It has been tuned, and motor mounts replaced.


My '96 (same car) idles at those same revs, unless the AC is on,..then it
idles slightly over 1000 rpm..

Jason


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