89 Eclipse adjustment

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Mauricio Tavares - 25 Feb 2007 13:43 GMT

A friend has one of those cars with the 1.5L engine and manual
transmission. We recently finished rebuilding the engine and started the
car. It works but we need to adjust the idle. Problem is we only have
the Haynes manual and it refers to a label on the hood, but there are
none. So, would anyone know the procedure to adjust the idle in that
beast and what should the value be?

Thanks!

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Mauricio raub-kudria-com
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Stewart DIBBS - 25 Feb 2007 14:29 GMT

> A friend has one of those cars with the 1.5L engine and manual
> transmission ...anyone know the procedure to adjust the idle

The Eclipse never came with a 1.5L engine. It did come with the 1.8L 4G37
SOHC 8v in the base model.

On the top of the throttle body there's a 10mm black cover under which is
the idle speed adjust screw. Externally there's another adust screw, but
this is just the butterfly stop adjustor. If you fiddled with this you have
to make sure the butterfly is fully closed and reset the adjust screw.

With the engine warm, adjust idle speed adjust screw for about 800 rpm. You
are supposed also to ground the wire in the brown/tan floating connector on
the firewall near the throttle body, but this seems to not have any real
effect. Disconnecting the battery for 30 seconds (ie reset the ECU) before
adjusting idle speed seems to have the same effect.

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Stewart DIBBS
www.pixcl.com/lancerproject.htm

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Mauricio Tavares - 26 Feb 2007 02:53 GMT

>> A friend has one of those cars with the 1.5L engine and manual
>> transmission ...anyone know the procedure to adjust the idle
>
> The Eclipse never came with a 1.5L engine. It did come with the 1.8L 4G37
> SOHC 8v in the base model.

I meant the Mirage. My fingers have their own thoughts sometimes. =)

> On the top of the throttle body there's a 10mm black cover under which is
> the idle speed adjust screw. Externally there's another adust screw, but
[quoted text clipped - 6 lines]
> effect. Disconnecting the battery for 30 seconds (ie reset the ECU) before
> adjusting idle speed seems to have the same effect.

Would that also work for the Mirage? If so, we'll try it out and post
the results. Thanks!

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Mauricio raub-kudria-com
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Stewart DIBBS - 26 Feb 2007 12:22 GMT

> I meant the Mirage. Would that also work for the Mirage?

Yes.

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Stewart DIBBS
www.pixcl.com/lancerproject.htm

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