SPONSORED LINKS

1997 Chevy Lumina hesitates

Tiny
THEBEAR
  • MEMBER
  • 1997 CHEVROLET LUMINA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 180,000 MILES
When driving the car at highway speeds it tends to stall, or hesitate if I push the gas peddle after a while it will gain speed and be fine. A little while later it will happen again. I have flushed the fuel lines, cleaned the fuel filter, changed the fuel pump, and replaced the spark plugs and wires but the problem just keep getting worse.
SPONSORED LINKS
Thursday, September 10th, 2009 AT 8:04 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
1997 Chevy Lumina hesitates

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, September 10th, 2009 AT 8:09 PM

Please login or register to post a reply.

Related Engine Hesitate Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Hesitation
GUIDE
Hesitation
An engine hesitation is an interruption of continuous power during acceleration. When a engine is hesitating it will cause the car to lunge or surge which will cause a...
VIEW MORE

Sponsored links