What is the problem when a car runs back down a hill when in drive?

2011 SUZUKI SWIFT
Avatar
SHAWNTELLEPERCH
  • MEMBER
  • 4 POSTS
I was at the top of a hill my automatic car was in drive position but the car ran back instead of stalling or proceeding to climb the hill. What could the problem be ?
Sep 29, 2012 at 7:47 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
just at idle or when you try to move??

Roy
Sep 29, 2012 at 7:48 PM
Avatar
SHAWNTELLEPERCH
  • MEMBER
  • 4 POSTS
Both and when I pressed on the gas it hesitated first
Sep 30, 2012 at 3:15 AM
Avatar
KHLOW2008
  • ✓Experienced Mechanic
  • 41,814 POSTS
If the slope is too steep putting in drive would not stop the vehicle from sliding backwards.
The other thing to consider would be the idling speed. Low idling speed would not provide sufficient pull from the transmission.

Hesitation during acceleration under such conditions indicates you possibly have the idling speed too low.
Sep 30, 2012 at 3:24 AM
Avatar
SHAWNTELLEPERCH
  • MEMBER
  • 4 POSTS
Ok so it wouldn't be a transmission problem? Cause I did the same thing with a Nissan Almera and it didn't run back
Sep 30, 2012 at 3:27 AM
Avatar
KHLOW2008
  • ✓Experienced Mechanic
  • 41,814 POSTS
No, it is not. This is normal for some vehicles and as I mentioned, the gradient of the slope and engine idling speed has to be taken into consideration.

Your vehicle is still rather new so you should get the dealer to check the idling speed.

You did not list down the mileage on your vehicle and if it is anything more than 30k miles, there is a possibility the idle control system needs some cleaning up.
Sep 30, 2012 at 3:31 AM
Avatar
SHAWNTELLEPERCH
  • MEMBER
  • 4 POSTS
Ok well do thanks a lot
Sep 30, 2012 at 3:38 AM
Avatar
KHLOW2008
  • ✓Experienced Mechanic
  • 41,814 POSTS
You're welcome.
Sep 30, 2012 at 4:08 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.