TRANSMISSION WON'T SHIFT INTO OVERDRIVE WHEN HEAD/PARK LIGHTS ARE ON
1993 Mercury Tracer
July, 18, 2012 AT 3:07 PM
Transmission shifts fine with lights off. But when you turn them on, the car will kick out of overdrive and then shifts poorly. If you turn lights off, it shifts and drives well. The car has 150,000 miles, a 1.9 engine, automatic-overdrive transmission.