My 4 cyl S-10 immediatly revs to 4500 rpm when starting. Wht?

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Asked by wallsleo Feb 25, 2012 at 12:23 AM about the 1994 Chevrolet S-10

Question type: Maintenance & Repair

This morning when starting my 1994 S-10, it immeditaly reved to 4500 rpm"s. Shuting down and restarting had same results. The accelerator is moving freely.

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Kenneth answered about a year ago

2 things one take off your throttle body and clean it the sensors in there could have crud on them then clean your mass air flow sensor and check you vacuum lines and she should run like a champ.

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wallsleo answered about a year ago

I found a disconnected vacumn line. Thanks.

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