ECMlink hard starting, o2 reading all over

[dsm91TalonTSi]

well, i figured i'd try and get some help on why my car has trouble starting. i logged most of the attempts. it seems like the more i try to start it, the better it gets. it will eventually turn over, die, run then die, then run high rpms, die, the idle little above avg rpm, then drop to 750-800 rpm. also, my o2 reading seems to go all over the place, not sure if this is normal or not. the ecmlink log is attached. any information would help thanks

 

[twdorris]

Your coolant temp sensor is disconnected from the ECU (broken wire, loose plug, etc.). Note the -74F reading in the log file. That will make starting up very difficult.

Thomas Dorris

 

[dsm91TalonTSi]

amazing how just plugging in the new coolant temp sensor appeared to let it start right up. i didnt even thread it in, i didnt have the time to drain my coolant today.

 

[steve]

During cold startup the coolant temp is going to be about the same as air temp and not -74F unless you live in a polar region.