1998 Pontiac Montana firing order

1998 PONTIAC MONTANA
Avatar
SIDEKIK09
  • MEMBER
  • 1 POST
1998 Pontiac Montana 6 cyl Two Wheel Drive Automatic

hello...
i need a firing order for my pontiac montana....we did a diagnostic test and all it said was random misfire.
so will that be the problem for my van?
it'll do slight jerks when accelerated and less power than usual...but engine turns with no problem.
Feb 22, 2009 at 2:24 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic


https://images.2carpros.com/forum/automotive_pictures/12900_fo_38.jpg

Jerking could be caused by the following 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
Feb 22, 2009 at 2:36 PM
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.