rpms running high on highway on 2006 Dodge Ram 1500

for starters my engine light is on,but if I drive on the highway for 15 or more minutes my rpms will randomly jump to 2100 rpms and hold for a second or two then go back down and will repeat every couple minutes until I get back down to city speed limit.

by in Whitetail, MT on August 08, 2014
1 answer
ANSWER by on August 09, 2014
Scan transmission module!... Reply for more info...
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