Re: mustang gt 2000
When your turn your car on the green o/d light is not lit. This means overdrive is engaged, so you have that 4th overdrive gear engaging for lower rpms and better fuel efficiency. If always defaults to being on.
If you press the button and the light is lit up on your dash, then the o/d is turned off, or not engaged. Your transmission will basically act ike a 3spd and won't engage that 4th overdrive gear.
12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros
03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB