
2003 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Misfire, Poor Fuel Economy
Has a clear #2 misfire at idle (seems ok under load) Replaced original plugs 175k. No change. Checked LTFT -12% Ckecked for CAM counts seems ok I'm not positive how they normaly work this one slowly counts up then starts over (no codes) When cam sensor is disc...
Summary posted 3/20/2008
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)4 Replies Received(Hide Replies)4 Replies Received
|
Message Closed w/Summary
|
VIN | 1GNT13SX22 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / sefi |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, Poor Fuel Economy |
Occurs | Hot, Idle |
Trouble Codes
P0302 | Cylinder 2 Misfire Detected |
Message Closed w/Summary
Vehicle Data
2003 Chevrolet Trailblazer LS
VIN | 1GNT13SX22 |
Engine | 4.2 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / sefi |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, Poor Fuel Economy |
Occurs | Hot, Idle |
Trouble Codes
P0302 | Cylinder 2 Misfire Detected |