Recently my 99 Taurus will stall on startup when the engine is warm. The idle will get really rough and then it will eventually die. However, if the car does sit for 30mins it will fire right up. Unfortunately, there had not been any codes thrown to give any indication of what is wrong.
I noticed that in some other posts, members felt that there was something wrong with the closed loop of the system. I am unfamiliar with the difference between the closed loop and the open loop. I thought that a closed loop is what a car normally operates in, as it connects all the readings of the IAT, MAF, ECT, and O2 sensors. Is this incorrect?
In addition, I was wondering if a bad ECT sensor could cause stalling on startup because it would trick the PCM to think it was cold and run rich when it should not. Any thoughts? Thanks!
I noticed that in some other posts, members felt that there was something wrong with the closed loop of the system. I am unfamiliar with the difference between the closed loop and the open loop. I thought that a closed loop is what a car normally operates in, as it connects all the readings of the IAT, MAF, ECT, and O2 sensors. Is this incorrect?
In addition, I was wondering if a bad ECT sensor could cause stalling on startup because it would trick the PCM to think it was cold and run rich when it should not. Any thoughts? Thanks!