Why This Transmission Slipped Only When Warm: A Valve Body Bore Wear Audit

A 2008 Honda Accord with 187,000 miles came in with a specific complaint: the 5-speed automatic slipped in 3rd gear, but only after about 20 minutes of driving. Cold starts were perfect. Neighborhood speeds were fine. The slip started on the way home from work after the transmission had reached full operating temperature. No fault […]