2.1 NA Hunting idle - Saab 900 Bulletin Board - Saabnet.com
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2.1 NA Hunting idle
Posted by SwedeFreak [Email] (more from SwedeFreak) on Tue, 5 Aug 2014 15:49:26
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Sooo.....I have a question about IAC/ECU function.
I picked up my '91 from the shop, where a run of the mill custom exhaust was installed today, and it now idles terribly. It holds a high idle and occasionally dips for a moment. The dips in speed come more frequently as the car warms. Unplugging the IAC is the only way to slow and steady the idle.
Any idea what might cause this? The fuel control is good, or so it seems, because it certainly isn't running rich.
I look forward to hearing your opinions. Thanks!
posted by 68.235.225...
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