2003 Chevy Impala Won't Idle

2003 CHEVROLET IMPALA
120,100 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
MJBGANDT
  • MEMBER
  • 1 POST
Try to start car without holding the gas a little bit and won't start. Hold the gas pedal a little bit and it will start. Has new fuel filter, plugs, and wires. Why won't it idle without holding the gas pedal.
Nov 25, 2008 at 9:18 PM
Advertisement
Avatar
RENAUDTN
  • ✓ASE Certified Mechanic
  • 636 POSTS
  • ASE Certified Mechanic
You shouldn't have to hold the gas pedal.
Check your fuel pressure

If low fuel pressure, check your fuel pressure regulator, then check voltage at the fuel pump (accessible thru a door in your trunk).

If fuel pressure good, check your TPS sensor.
Nov 26, 2008 at 10:16 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.