Engine/Transmission (1998.5 - 2002) Codes, reading them

[Alexdring]

CrewCabDiesel-



I bought the truck from a private seller who looks like he might of gotten carried away with a powerwasher. Dave Z can verify that, he thought someone got underneath and waxed the suspension it was so spotless.



By unplugging the batteries you have to recalibrate the apps? I think the first thing i need to do is check my pressure. I am nervous to drive it now thinking my lift pump is getting flaky.

 

[CrewCabDiesel]

Reprogramming the APPs is very simple, attach batteries, turn key to run (but do not start) press down slowly to the floor the gas petal and let up three times and you are done. Make note if you have a bad APPS sometimes it will not work at all after reprogramming (I found that out also the hard way on vacation once). Either way get a fuel pressue gauge installed asap, cheap insurance compared to a price of a VP44.

If you want to try a shadetree check on your lift pump, drain the fuel filter and then replace it with a new one. Start the truck and see if it keeps running, if the motor stalls, cycle the key to the run position couple of times to pump fuel up from the tank into the filter housing and see if the truck restarts, (be carefull not to crank the motor longer the 15 seconds without a cool down). IF the the lift pump is not working or is very weak, you will have to fill the fuel filter housing with diesel to get it started again.

Kyle

 

[Bob4x4]

It's not so much reprogramming the apps(since it is a sensor)but calibating it so the ecm knows the voktage at both ends of the scale.





ECM Calibration: Turn key to ON position. Without starting engine, slowly press throttle pedal to floor and then slowly release. This step must be done (one time) to ensure accelerator pedal position sensor calibration has been learned by ECM. If not done, possible DTC's may be set.



Cummins and Dodge say that the voltage should not be adjusted by turning the sensor in it's bracket but if you are careful to not overdo it most times you can get away with it. The Voltage is on a sticker. You can rotate the sensor till that voltage shows at the ecm or pcm.



Bob

 

[Alexdring]

Bob4X4- Other users tell me your the man when it comes to these Cummins. So from what i read this is what i am going to do.

1. Get a pressure gage

2. Change the fuel filter and look for kinks in the fuel lines

3. Clear the codes and recalibrate the APPS

4. Start the motor and check the pressure.

5. If ok, go out and try to make 3 good "trips"

6. Re-read the codes and go from there



Does this sound like a good plan? This has been my dream truck ever since Dave Zuber showed me his. I would hate to mess it up any further then it is.

 

[PatrickHenry]

Alex, get ready to fork out the money for a new or rebuilt injection pump You can :-{} all you want but eventually it will fail#@$%! I drove mine about 30,000 miles with same symptoms. After new pump I have not seen the dead pedal again(5,000 miles)

 

[Alexdring]

I finally got the gauges installed. My fuel pressure was 14 and never dropped below 12 the whole day, sat or sun, WOT or not. I drove it all day saturday towing without a hitch (once it warmed up) but on Sunday I drove it to Home Depot and it never snapped out of the dead pedal barely making it up mild hills requiring me to shift down to third even.



One thing I noticed is the boost never got past 6 psi on the way to Home Depot and back. (I didnt have the guages hooked up on Saturday when it was running just fine with all its power on tap) From the rpm range of 1k-2k it would sputter like a gas motor with water. The boost gauge was bouncing all around like a tach. Could my wastegate be sticking?

 

[Joe Mc]

Alex - save this link to your favorites for future use. https://www.turbodieselregister.com...ine-transmission-faq/96634-24v-code-list.html

 

[Alexdring]

Thanks, saved and printed for a copy to go in the truck.