I was surprised to read the coil solved the problem. It doesn't really match with the symptoms. Don't waste your time with the fuel filter. Except for diesel trucks, you will never solve a running problem on a Chrysler product by changing the filter. It actually passes the largest volume of fuel during coasting.
The ignition coil has nothing to do with the fuel supply system. Pumps almost never stop while they're running. When the motor's brushes are worn due to high mileage, they will often fail to start up, but once started, they will continue to run just fine.
One really uncommon and hard-to-find problem doesn't actually have to do with the pump, rather with the pickup screen attached to the pump. When it gets plugged, fuel pressure will drop, potentially causing the symptoms you described. This happened to my '88 Grand Caravan many years ago. Outside temperature should have nothing to do with the problem, but it occurred during the two hottest days of summer, then never showed up again until six months later. Here again, fuel volume goes way up during coasting. (This is not the same volume that is syphoned off to be burned in the engine). Due to the restriction, pressure drops which reduces the injectors' ability to spray fuel. This can be hard to find because the engine computer does not monitor the fuel supply system.
Saturday, February 27th, 2010 AT 10:27 AM