ok here is my problem. i have A 98.5 24V AND I HAVE NO POWER! i just replaced the lift pump and inj pump 5k ago,so i dont think thatis it. i ran my codes with my chip and p1693 poped up. the truck wont axcel and will downshift out of overdrive around 45-50. i am thinking it is the tps/apps. has anyonehad this problem andif so was it the tps/apps?

 

1693 code is a code telling you there is another code stored after that one,(its called a companion code).Never had this problem but here is the TPS/APPS sensor DONT GO TO THE DEALER.CUMMINS THROTTLE POSITION SENSOR ('98.5-'02)-Dodge Cummins Diesel Truck Accessories – Geno’s Garage to fix it.That sensor is a were item.Do another scan with a scan tool and report back.