I put an aftermarket temp gauge in my son's 1986 iroc 305 tpi. I installed it in the drivers side head where the dash gauge sending unit was, Will this cause the cooling fan not to work? Will this cause any issues with the way the car runs ?

 

not if you put it in where the gauge reads at. only if you change the temperature sensor for the ecm will it effect it.

 

What he said.