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1G 90 GST idle issues

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rowdygst

10+ Year Contributor
230
2
Jan 12, 2011
san antonio, Texas
well ever since i bought my 90 gst (5 months ago) the car had a idle problem, all the lines on the tb are plugged, and the car idels fine some times, but for the most part the car idles at 3,000 rpm, i dunno what it is but its annoying as hell. the car is runnin open dp, so you know how loud that is LOL.. well i check the tps and its fine, but im thinking since all the lines are plugged that is the problem, but talking to my dsm buddys they say that that shouldnt cause the problem cause they run them like that.

what are some opccions i have to fix the problem?
 
Check for vacuum leaks, or even hoses that are capped off and shouldnt be.
The BISS screw as well might be suspect.
 
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