2001 Dodge Caravan I left the ignition switch turned on! He

Does the car run or not run? It is possible; however, unlikely that you burned up the fuel pump (this is by total accident of course since once pressure builds the fuel pump cuts off). If the engine starts and runs then the fuel pump is not of concern. (You can confirm this by observing the low hum of the fuel pump when the ignition is in the ON position). Now burning gas smells usually come from a very rich running engine (totally seperate issue) except if you have a leak onto the exhaust manifolds. Make sure you do not have a fuel leak at the fuel injector O rings, quick connect fittings or pressure regulator.

The van does start yet it stays running for a few seconds sometimes minutes and then dies. We disconnected the battery and left it off all night when my husband gets back he is going to reconnect it we thought that it could be the computer going crazy too. I dont know whats going on. Please help!

Does the car sputter and stall or does it completly shut off? Is the battery dead after running it? If so then test your alternator.

We have checked the alternator and replaced the battery with a new one. We tested the check engine light for codes and found 5 different ones yet sometimes one will be on there then the next time not. It is acting really funny. It does spit and sputter and then die. We had someone tell us that they thought it was the ECM. What do you think?