89 Jeep Comanche Starts And Stalls Any Ideas?

[Antonio_lopez09]

Please help. I've got an 89 Jeep Comanche that was driving fine yesterday and today when i went to start it; it would start and stay on if i kept the key in the start position, once I let go it would stall out. hope someone can help

[gogmorgo]

It would be helpful to know a bit more about your MJ. Which engine for a start.

 

There are a couple things I can think of that would cause this. Either the engine isn't making enough power to stay running without the help of the starter, or else not everything is turning on in the on position. (i.e. fuel, spark, etc.)

Can you hear the fuel pump prime when you turn the key to "on"?

[ftpiercecracker1]

If its the 4.0 it sounds to be either a fuel pump issue or maybe (hopefully) it your fuel pump ballast resistor.

[maddzz1]

I had this problem when i got mine. It was one of the wires near the fusible links behind the battery. I think it was one that went to the starter relay or whatever that metal box thing is called.