It has been extremely cold here and my truck refuses to stay running without my foot on the gas until the truck gets up to operating temperature. Once it reaches temp it runs great. Is this the intake gasket problem I hear so much about. I notice as it dies all my lights dim and when I hit the gas to keep it running all my lights get brighter. When it gets to about 1/4 way up the temp gauge the trucks will stay running but it barely idles higher than about 300rpm and if I put it in drive it will stall unless my foot is on the gas until it reaches temp.

Could there be another issue here? Alternator is a year old and the battery about 2 years old.

Thanks!