stay in open loop

[kptuck]

To address my current issues, I am considering taking the steps to keep my 2000 TJ in open loop at all times.

Does anyone know what steps I have to take to do this?

Basically my engine runs and shifts great when cold, and then falls flat at 4200 RPM when it warms up.

I have a topic on the Stroker Basics forum if you want to read the details of my dilemna.

[kptuck]

bump

anyone know if by disconnecting the coolant temp sensor if the PCM will stay in open loop?

[SilverXJ]

It appears it does, but you would need a piggy back tuner to make that work. However you will have a check engine light on. I had put some thought into this and I think if you put a resistor in that gives the resistance of a low enough temp the engine light should go off, unless it throws a code similar to "engine hasn't reached operating temp in x time". Also, if you have a 97+ (IIRC) your dash gauge won't work any more. You will also need a Wideband O2 sensor to see your AFR ratios.