Re: 1990 Ranger manual 2.3L idles high
Yes check the vacuum line to the fuel pressure regulator. If you.take it.off and start it, it'll rev around.that range. Try that. Hose first.
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"Pulling a 3,000LB load, 300 Miles, with 2/5 Quarts of oil, will not hurt an old 2.3L engine." (Experience) 
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