OBD1 CODES CODE 16 Questions

Have Replaced Egr Valve And Still Have A Code 16, Also Code 24?

The Truck Maintains Around 14 Volts But After Driven Couple Miles Service Engine Light Comes On After I Shut The Truck Off And Restart It...

Sometimes If I Try To Restart Within A Short Time After Shuting Down I Have To Wait 3 -- 5 Minutes. I Count The Blinks On The Ecu And...

Couple Of Weeks Ago My Truck Just Up And Shut Off On Me While I Was Driving. No Problem With The Truck Until It Cutoff. No Spark No Fuel...

I'm Getting A Code 1610 And Another 16 Something. They Are Both For Nats. Nats Malfunction. What Would Cause This? Do I Need To Replace...