Lights Flickering On Cold Start
My truck has had a slight flickering of the lights, headlights and dash, immediately after a cold start since new and I now have 133,000 miles on it. Cold to me means 20-30's. The flickering would only last a few minutes and seems to be the most noticeable around 1100-1200 rpm. Yesterday morning it was worse than usual, meaning more dimming of the lights. The flicker is about a twice/second, but only lasted the normal few minutes.
Is this the intake air heater working? Does this cycle on/off like I'm seeing because it seems to be an electrical load being turned on/off that is causing the flicker. Is something getting ready to die?
Everything else works fine.
Thanks guys.
Ed
KM4STL
'06 Sierra LBZ 4x4 Crew SB, Titan 52 gallon fuel tank, TTT/Schefenacker Mirrors
'98 Suburban, 245,000 - sold 7-4-06