My 2002 Ford escort won’t start when the engine is cold, and by cold I mean less than about 80 degrees F. I have to crank it multiple times to get it to start, and then it usually runs for a little while and dies. When I first start it, if I press the gas it dies immediatly.
Once the engine is warmed up, it runs perfectly and you would never know there is a problem. It also starts fine if the engine hasn’t been off for very long, and is still warm. I have already replaced spark plugs, spark plug wires, battery, and fuel pump. I have also run fuel system cleaner through it, and changed the oil/filter.
Check your coolant temperature sensor.
Even though the fuel pump was replaced, you shouldn’t assume that rules it out. Has anyone put a fuel pressure gauge on it? (Especially at cold start)