2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

RPM Surges

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Old 10-12-2013
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RPM Surges

Have a 1990 2.9 4x4.. When going down the freeway the engine rpm will surge or go up 250 RPM.. It does this on its own with no input from me.. Any ideas why it would do this.

Thanks
 
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