What is your question?
The check engine/service engine soon light is on. I had the code pulled at Pep Boys during an oil change and it's P0340.
The symptoms are on a cool morning, like under 60F, the car will stall out on the first start. It will start normally after that and for the rest of the day regardless of how long it's been off.
On cold mornings I've tried turning the key to on a few times to get the fuel rail repressurized in case it was a problem with the fuel pump, but that doesn't prevent the engine from stalling the first attempt.
There doesn't seem to be an easy to diagnose problem with the alternator. Going by cabin light brightness: all additional loads like headlights and AC blower only cause a very brief dimming before returning to normal brightness and staying normal after that. That's not exhaustive testing, but the alternator is often the cause of the problem with these symptoms.
The car runs fine otherwise. It has a 3.8L engine with 89,000 miles on it.
Are there specific things I can to check with basic tools and a multi-meter? I need to solve the problem because I have a smog check coming up in August so I need the code fixed to pass.
Thank you for any suggestions.
