Closed loop

[89blkvet]

How can I check to see if the ECM is going into closed loop. And where can i fing the coolant temp sensor??

 

[-=Jeff=-]

How can I check to see if the ECM is going into closed loop. And where can i fing the coolant temp sensor??

AN OBD 1 scanner should be able to tell you if you are in closed loop or not.

The Coolant temp sensor for the ECM is at the front of the Intake manifold.