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Mr_Wrench, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 395
Experience:  24 years gm dealership ASE Master Tech Previous GM Master Tech
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2004 2.2 ecotec misfire 2&3 swapped injectors #1 with#2 .#

Customer Question

2004 2.2 ecotec misfire 2&3 swapped injectors #1 with#2 .# XXXXX no miefire #2 .still misfire suspect coil pack. need scematic on coil pack resistance values. how do i check out coil pack individual firing of 1,2 and 3,4.thanks norm
Submitted: 7 years ago.
Category: Pontiac
Expert:  Mr_Wrench replied 7 years ago.

Hello! I think this may apply. Let me know

SES Light and Sever Engine Misfire On Cylinder 1 And 4 or Cylinders 2 And 3 - keywords ICM ignition miss module no P0300 P0301 P0302 P0303 P0304 plug repeat replacement spark - (Jul 24, 2007)

Subject:SES Light and Severe Engine Misfire on Cylinders 1 and 4 or Cylinders 2 and 3

Models:2002-2005 Chevrolet Cavalier
2005-2006 Chevrolet Cobalt
2006-2006 Chevrolet HHR
2004-2006 Chevrolet Malibu
2004-2005 Chevrolet Malibu Classic
2002-2004 Oldsmobile Alero
2007 Pontiac G5
2002-2005 Pontiac Grand Am
2005-2006 Pontiac Pursuit (Canada Only)
2002-2005 Pontiac Sunfire
2003-2006 Saturn Ion
2004-2005 Saturn L Series
2002-2006 Saturn Vue
with 2.2L Engine (VIN D or F - RPO L61)


This PI Supercedes To Remove 2007 Model Year. Please Discard PIP3433C


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.


Some customers may comment on a severe engine misfire and a SES Light. Upon inspection, DTCs P0300 - P0304 may be found due to misfires on cylinders 1 and 4 or cylinders 2 and 3.


If this concern is encountered, inspect circuits 406 (IC Control for 2/3 Coil) and 423 (IC Control for 1/4 Coil) for an intermittent short to ground or poor connection on either end. Depending on the model, these circuits may short on the AC lines near the AC compressor, on the transmission mount, or on the transmission lines where they enter the transmission. If there is no problem found with these circuits, inspect the ignition control module ground to ensure that it is clean and tight.

If there is no problem found after performing the suggestions above and the SI diagnostics lead to ignition module replacement, replace the ignition module as directed but also replace all of the spark plugs and clean the ignition module ground to possibly prevent future ignition module damage.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.


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Customer: replied 7 years ago.

the first answer was satisfactory given the limited info i accept the first answer norm

please disregard this question thank you for youe valued help norm

Expert:  Mr_Wrench replied 7 years ago.

Your Welcome!

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