
2003 Hummer H2 6.0L Poor Idle Quality, Misfire, MIL Lamp on
thanks for reading. this h2 came in for intake gaskets, exhaust gaskets, plugs, and wires. we replaced all that and put heddmen headers on. took it for a test drive and the oil pressure shot up over 80. got back from the test drive and it had a real rough idle...
FIX posted 8/27/2016
![]()
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)20 Replies Received(Hide Replies)20 Replies Received
|
Message Closed w/FIX
|
VIN | 5GRGN23U93 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | Not OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Idle, Starts and Idles Fine Until It Levels Out After 600 Counts on the Modis. |
Message Closed w/FIX
Vehicle Data
2003 Hummer H2
VIN | 5GRGN23U93 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | Not OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Idle, Starts and Idles Fine Until It Levels Out After 600 Counts on the Modis. |