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try replacing the throttle positioner relay, 1"x1"x1/4"thick(black) b top front air intake Just had same problem with my 88 aerostar. Wouldn't idle and ran rough. Mechanic replaced MAP (manifold absolute pressure) sensor for $268 and now she runs great.

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โˆ™ 2007-12-19 22:34:26
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Q: How do you fix a 1987 aerostar that will not idle?
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