Quote:
Originally posted by 87 STEPPER
UHHH!
Temp & Oil sending unit's dont have any thing to do with emissions.
But the truck will not run with out this info going to the ECM.
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I beg to differ. The coolant temp sensor in the intake does have something to do with emissions. This tells the computer what temp the coolant is.
The oil pressure switch lets the fuel pump know when the engine has oil pressure.
The temp sender in the head and the oil pressure sender at the oil filter doesn't go to the ECM, only the gauges.