I am having a problem setting my base timing with the turbonator cal for a 2.5. When I pull the coolant temp sensor the fan comes on but the engine starts running extremely rich and rougn. The timing mark is in the window but is jumping all over. I ended up setting it by ear for now just to get the engine running and the cooling system bled. The cal does run rich at idle with the sensor connected it is running about 11.0 on my wideband. When I pull the sensor wire the black smoke starts pouring out the exhaust.

Has anyone ever experienced this problem?

Thanks,

Justin