greenskeeper79

check grounds and all battery connections

You helped me in the past with an engine "loping" problem. I was wondering if you might have a suggestion for my current problem? I have a 1997 F250. For months the battery light has been flickering on and off. Sometimes it stays on for a long while, sometimes it goes off. We have replaced both batteries and the alternator. When I start the truck, the voltage reads low but pops up to normal in about 10 or 15 seconds. It doesn't just do this when cold, it always does it. If I stop and start several times within an hour, it does it every time. Sometimes, it's a slower start when the engine is already hot. More so than when the engine is cold. What should we look at next?