The Coolant temp. sensor is the one next to the thermostat?? I saw it and tomorrow will be checking it, thanks heyyou.

 

Notta problem. That is most likely your problem. (wild guess from however many miles away......)

 

Finally today, I changed the engine coolant temp. sensor, changed the thermostat, put new distribuitor cap and rotor, but I finished too late, tomorrow I will make a test ride to see what hapens, this past week was the coldest in 70 years or so, it set a record breaking -20º Celcius in my city, today was the first warm day.

 

Well... he did say 5.9...Cummins!

 

I wish