Question about Ford Ranger

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86 RANGER 2.9L 4WD When going 45-50 or more for a bit, engine suddenly "logs down" like gas or air shut off... if I stomp on accelerator it will take off.... let up, and it logs down again...... got trouble code 89 which says something about 2 transmission items (converter cluch and lock up) and also "exhaust heat control". But my manual nor anybody around seems to know anything about such a thing..... I'm wondering if the air control on the upper manifold (passenger side) might have something to do with it???

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Try to notice if its always with the pedal in the same location. You may have a dead spot on the throttle position switch located on the throttle body. Try unplugging the sensor and drive. If its better you have found the problem. Be aware the truck may feel dirrerent with this unplugged but all you doing is trying to determine a dead spot

Posted on Jul 14, 2009

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Posted on Jan 02, 2017

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