What is the year of the car so we can check the correct ignition and fuel parts.
Okay I'm glad to hear it sounds electrical and not something like a valve problem. I'm sorry, the year is 2008 and it had the V6 can't recall at the moment whether it's 3.3 or 3.8 litre.
To me it certainly sounds electrical, and since this car has electric distributor, the fault could be in there.
If the car is standing alot outside there can be corrosion to the circuits in the distributor, and, or the cables connecting the distributor to the bettary.
Try to disconnect and clean the cables, and then spray them with some WD40, and hopefully this will help. You can also take the top of the distributor and see if you can see any corrosion in there. If so, try to spray with WD40 and to brush it clean with an old toothbrush. Then let it dry out before you close it up again.
My dad's Dodge Grand Caravan was shaking at cold startup. It didn't seem like enough shaking to be a misfire, so I suspected it needed new plugs and wires. After I replaced them, the van would idle for about a minute or two and then start sounding like it was struggling to run. It gave a running to lean code which I cleared, as well as disconnecting and reconnecting the airflow sensor connector, and then the van ran fine. After a couple days, it gave a misfire code that has been coming and going. However, the van drives fine and doesn't seem to have any loss of power or gas mileage. There is still the shake on startup, though. Before all of this, the engine would struggle a little if the A/C was turned on, and shut off once when it was idling on a fairly steep hill. What could this be? Does this sound like something mechanical or electrical? Thanks!
