Pontiac Firebird 3.1 V6 needs high consumption

[melsg5]

1 and 2 try www.car-parts.com
3. Drive and Overdrive? Does your engine speed change when going from one to the other?

 

[92 Sunbird LE]

3. Does anyone know why there are two different drive emblems at the automatic gearshift? there is one with a frame and one without. i dont have a manual and i couldnt find anything online.....

The one with the frame is overdrive [O] .................... you should be in that one 99% of the time.
The regular drive (D) is for towing a boat or camper or small trailer. ( the other 1% of the time)

Doug in P.R.

 

[92 Sunbird LE]

Should shift into Overdrive (4th gear) at 45 MPH or so. ( with the selector in [O] )

Lock up convertor can be locked in at any speed if you let your foot off the gas while driving.

Doug in P.R.

 

[valente]

Thanks Guys. But its the [D] that is framed not an O. Is there a difference in consumption between those two modes?

______________________________

 

[melsg5]

yes there is, should be in [D] for normal driving

 

[92 Sunbird LE]

Yes, allways ... for the best mileage ..............................................

The other D is for towing or deep snow - water - mud.

Doug in P.R.