SPONSORED LINKS

GMC Hesitating

Tiny
CHBARBER
  • MEMBER
  • 2001 GMC SONOMA
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 145,000 MILES
2001 GMC Sonoma 4.3L V6- It started hesitating at around 45-55 mph today. Now it hesitates when I am getting up to speed from a start and nearly stalls at some stop lights. When I take off hard it does fine. New Fuel Filter, plugs, wires. O2 sensor error on OBII.
SPONSORED LINKS
Wednesday, March 23rd, 2011 AT 12:54 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testin
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, March 23rd, 2011 AT 1:03 AM
Tiny
CHBARBER
  • MEMBER
  • 3 POSTS
I am going to run seafoam through the PCV valve one day this week. I am also going to run a can through the gas to see if it will clean up some of the parts. Any clue on how to narrow this down?
Was this
answer
helpful?
Yes
No
+1
Wednesday, March 23rd, 2011 AT 1:17 AM

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