I may not use the exact words for this code but you may know what i am talking about. my 2001 deville is giving me a code that saids, insuffient coolant temp for closed loop fuel control. Is there a sonsor for this and where is it located or how do I correct this.

 

I appreciate any help

 

Could be the temp sensor, or it could be the thermostat. Not sure where the coolant temp sensor is on the '01, but I could check and see tomorrow, if no-one else knows off-hand.
Is that the ONLY code you're getting?

 

I also have a code for bank 1 catalys threshhole high