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What can cause the idle of a 89 dodge shadow to rev up and down?
Wiki User
∙ 15y ago
my guess would be a vacuum leak or a bad throttle position sensor. The best thing to do is get in your car, start with the key in the off position...turn it on off on off and back to on. On being the position right before start. The check engine light will come on and then soon after will start flashing coded....check this out it is a life-saver...
http://www.allpar.com/fix/80s-codes.html
Wiki User
∙ 15y ago
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