Jeep Patriot Forums - View Single Post - Drivetrain hesitation and bucking
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post #10 of (permalink) Old 12-29-2016, 09:36 PM
Treegrower
Senior Member
 
Join Date: Jan 2013
Location: Michigan
Posts: 549
 
Over several decades, I have had several engine problems with symptoms similar to the OP with no codes thrown. In all cases, it took a very experienced mechanic with a "scope type" diagnostic scanner to diagnose the problem. In one case, I had a bad plug wire that was mis-firing intermittently. Another time it was a bad throttle speed sensor that sent bad signals to the tranny, causing symptoms like it was "slipping". No codes were ever thrown.

Ask your dealer if they have tried any testing (scope) beyond a regular code scanner.

Here's an example of a scope type diagnostic tool: skip ahead to see it in action.
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2014 Sport, 2wd, 2.4L, 6 speed tranny, Winter Chill

Last edited by Treegrower; 12-29-2016 at 09:58 PM.
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