or maybe that's just the connector laying loose next to the sensor after being disconnected, in that case, my error....yeah that's the coolant temp sensor there....$35 but kind of goofy to install, you need like a thin walled deep socket to actually get her in there properly, and for sure use plumbers tape (teflon) on the threads...but I bet it'll make a difference..it'll eliminate the hard warm start and stalling after warm issue right away. Doesn't make any difference on cold start cause it hasn't kicked in yet but after that...big bang for the buck....cliff