whats the difference between over drive and gear 3? when should i be using each of them?

5

Asked by Dec 14, 2012 at 12:46 AM about the 1998 Pontiac Grand Prix 4 Dr SE Sedan

Question type: General

3 Answers

37,365

In an automatic 4th gear is overdrive and 3rd gear is direct drive or drive. The only time you should ever need to use any gears below 4th is when you are traveling down hill over long distances and you are picking up speed. Like when you are coming down a mountain (Colorado Rockies), putting your vehicle into lower gears is called engine braking. It uses more gas but it will keep you at a safe speed on downgrades without overheating your brakes. The powertrain control module takes care of everything. You can drive in whatever gear you want but if you want the best mileage on normal roads leave it in overdrive.

1 people found this helpful.
Best Answer Mark helpful
109,085

John is correct except for using more gas during downhill engine braking . The ECU shuts off the fuel after a few seconds so no gas is wasted. If you happen to be towing, reduced speeds and third gear is used.

1 people found this helpful.
37,365

I meant more gas would be used on the highway in third, sorry for the confusion.

Your Answer:

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 1,696 nationwide Grand Prix listings starting at $1,500.

ZIP:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,740
  • #2
    Tom Demyan
    Reputation
    3,320
  • #3
    munron
    Reputation
    2,900
View All

Related Models For Sale

Used Chevrolet Monte Carlo
4 Great Deals out of 976 listings starting at $1,125
Used Pontiac Bonneville
4 Great Deals out of 333 listings starting at $2,900
Used Pontiac Grand Am
735 listings starting at $2,490
Used Chevrolet Malibu
594 Great Deals out of 51,820 listings starting at $1,550
Used Chevrolet Camaro
260 Great Deals out of 27,404 listings starting at $2,900
Used Ford Mustang
297 Great Deals out of 40,392 listings starting at $1,312
Used Pontiac Firebird
5 Great Deals out of 695 listings starting at $3,995
Used Nissan Altima
848 Great Deals out of 62,410 listings starting at $1,000
Used Honda Accord
713 Great Deals out of 103,652 listings starting at $999

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
11 Great Deals out of 269 listings starting at $1,690
2007 Pontiac Grand Prix For Sale
232 listings starting at $2,295
2006 Pontiac Grand Prix For Sale
3 Great Deals out of 287 listings starting at $1,500
2005 Pontiac Grand Prix For Sale
217 listings starting at $3,750

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.