i have a 88 blazer that is pumping to much fuel and is flooding out blowing black smoke and running horrible i rebuilt the throttle body and still the same thing a friend said it could be the temp sensor but he wasnt sure which one there is one by the thermostat and one on the block any help would be greatly apppreciated i forgot to mention it has the 2.8 in it

 

The sending unit by the thermostat housing is for the computer.