How about a 2011 Jeep Liberty that runs terrible and has trouble on hot days?  Ron's next up is a bit of a Frankenstein vehicle; the original engine has been replaced by something different .and well, its bits and pieces being held together in this 03 Tacoma. The OBD II port tests show no codes BUT the check engine light is on. Ron offers a definitive approach to get to a conclusion quickly.  He then covers basic mis-fire diagnostics on an 07 Escalade with multiple misfires. After walking the caller thru the steps he then takes a call on an 01 VW Gulf with a bad voltage regulator  and an owner that can't find the right part. Ron gives him the info he needs to solve his problem.  The last call of the hour is from a listener in Virginia that has an 04 Chevy Trailblazer where the transmission won’t engage. Ron's solution and diagnostic step is simple and clear to determine the fault. 

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