Reply to thread

Message: <blockquote data-quote="Todd in KS" data-source="post: 1576987" data-attributes="member: 37408"><p>A bit of background - I inherited my 99GT in December.  At that time it had 15.8K on the clock.  I am sure my dad had not driven this car much at all for the last 10yrs (?) and very positive not "in anger".  Drove it just a small amount in December, it was not shifting quite right but got better with some driving and throttle excursions.  I drove it back from FL to KS in March.  Drove fine but still not perfect.  I now have 18K on it and the shifting is greatly improved but I am getting a "surging" especially at steady state cruise (70/75MPH).  After looking through threads here I am wondering if my converter is going in and out of lock?  How would I diagnose this and what could be done about it? Does it need anything as simple as a flush?  I am a 3 pedal guy at heart. Thanks for any insight/suggestions.</p></blockquote><p></p>