[Old4X]

Really need to know the fuel pressure the TB is seeing. A clogged return line will raisee pressure to the point of causing problems, as will low output pressure from the pump.

More elect. troubleshooting:

Take the coil snap connector off the top of the coil and check voltage to the "+" wire while the starter is turning. Must be battery voltage.

On the start relay, there is a ground wire. Temporarily hook a jumper wire from it to the battery "-" terminal. Put coil snap connector back on and try to start.

NOTE: Do Not leave the ignition switch in "on" position for any length of time. A few seconds is ok, time measured in minutes will fry the ICM (even a new one). So any tests on this circuit must be brief.

[phnguyen7]

all good now. it starts up and idles. I pretty much changed out the whole ignition but in the end i think it was a bad ground. Plus the engine was flooded which didnt help.

[phnguyen7]

Originally Posted by Old4X

Really need to know the fuel pressure the TB is seeing. A clogged return line will raisee pressure to the point of causing problems, as will low output pressure from the pump.

More elect. troubleshooting:

Take the coil snap connector off the top of the coil and check voltage to the "+" wire while the starter is turning. Must be battery voltage.

On the start relay, there is a ground wire. Temporarily hook a jumper wire from it to the battery "-" terminal. Put coil snap connector back on and try to start.

NOTE: Do Not leave the ignition switch in "on" position for any length of time. A few seconds is ok, time measured in minutes will fry the ICM (even a new one). So any tests on this circuit must be brief.

Thank old4x for your help! I think it was your magical ground that did it. And your advice about being flooded is a big one cause it started right up after that. now the jeep is running but a little rough on the low end. maybe the ecu has to reset?