engine is revving to 300 rpm when turned on, what is the problem?
3 Answers
could be your throttle position sensor or a vacuum leak
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X2, if your throttle cable was out of alignment it would constantly run high, the vac system does a lot of work at engine start. A (hill billy) way to check for a vac leak is to spray water over the vac lines and watch for bubbles or smoke a cig.