Where in the hell is the Ignition Control Module
Where in the hell is the Ignition Control Module
Platinum Member
Joined: 04-09-2006
Posts: 7,043
From: Vancouver, BC, Canada
check this thread: https://www.chevyhhr.net/forums/prob...t-27383/page2/
Deceased
Joined: 06-30-2010
Posts: 25,739
From: Kannapolis NC
Dang Don, ya beat me to it.
A steady P0304 says head gasket/cracked head to me.
Have you done a plug check Mexdealer? If the #4 plug is suspiciously clean, there's coolant getting into that cylinder and "steam cleaning" the sparkplug.
Of course you are using the proper AC Delco Iridium plugs, right? Off brand plugs will create havoc in Ecotec engines.
A steady P0304 says head gasket/cracked head to me.
Have you done a plug check Mexdealer? If the #4 plug is suspiciously clean, there's coolant getting into that cylinder and "steam cleaning" the sparkplug.
Of course you are using the proper AC Delco Iridium plugs, right? Off brand plugs will create havoc in Ecotec engines.
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