2001 Pontiac Grand Am SE "vehicle staying open loop" Questions

...may have a thermostat stuck open.Check and replace the thermostat.Your vehicle needs to run a certain temperature for the computer to switch to and operate correctly in closed loop mode..Good

...vehicle runs in what is called 'open loop' system when it is cold. The open loop system is a predefined set of parameters (including fuel/air mixture) embedded into the ECM to run the vehicle until ...

...vehicle was not going into closed loop I replaced oxygen sensor it then went into closed loop took it to inspection failed again for same thing I hooked obd1 it was not going into closed loop I got ...

...done so, perform a tune up; plugs, wires etc. also with the temp gauge not working the vehicle stays in open loop, which its still trying to heat up the engine. another reason for bad gas ...

open. For my vehicle it is 195 F. This time of year, it would take a very long time before your engine would reach normal running temperature. The interior heater would also take a long time since the

...open the door, this is normal operation. Yes, this one threw me for a loop the first time I saw it also. As for the lights blinking and horn honking, I would have to do some research to see what ...

...open loop mode the engine runs in preset peramiters set in the ECM it also runs in this mode til the vehicle is at operating temperator so even if the vehicle seems to be running ok the engine light ...

...vehicle has a manual acceleration system cable might be sticky or damaged. That's what I was going to say Diagnostic test of the throttle sensor. A gummed up or intermittent accelerator cable would ...

...vehicle, but normal operating coolant temp. should be between 160 and 180 degrees farenheight. Running cooler will result in fuel mapping staying in open loop mode in the ECU causing a rich fuel ...

...open loop. Cause of grounding issue--micro-friction--relating to the constant motion of a wire rubbing on metal wearing through outer wire coating causing internal wire to make contact with a metal ...