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Old 03-26-2008, 06:06 AM   #1 (permalink)
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Default IDLE rpm problem

Hello, i have an 1998 Forester (non turbo) and i will like to know why my idle rpm is at 500 rpm ? It is too low in my opinia.. and no idea what can cause this. It is like this for 2 years since i bought this car...

Can anyone tell me what to check, clean, whatever ?
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Old 03-26-2008, 06:50 AM   #2 (permalink)
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It could be that the cable has strecthed out over the years. The idle on the 98, assuming it's cable driven, is very easy to adjust. I did it on my 02 WRX. Someone else should chime in though, I don't have any pics of the linkage to really give direction.

Other than that I imagine there are several things that could cause it. Have you been up to date with maintainence items? When was the last time the air filter was changed or the MAF cleaned? Dirty injectors maybe?
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Old 03-26-2008, 08:09 AM   #3 (permalink)
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I am sorry but it can't be the cable. If i try this the ECU sets the rmp back to 500 very fast. I am thinking on checking MAF and injectors...
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Old 03-26-2008, 08:26 AM   #4 (permalink)
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Try to clean out the IACV too. (Solved my low idle/difficult to start problem).
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Old 03-26-2008, 09:18 AM   #5 (permalink)
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Are you sure it's at 500? The markings on the tach are a little misleading, the lowest mark is 500.
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Old 07-12-2008, 04:25 PM   #6 (permalink)
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i will take pictures...
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