Engine/Transmission (1998.5 - 2002) 24 valve problems

[JLittle]

I have got a 2000 dodge dually truck automatic diesel, that I have built back due to a engine bay fire, I have bought alot of used parts from everywhere, I replaced all the wiring, dash wiring too! the engine computer was replaced by a used one, the pcm is the original, my truck will start up and runs 20 seconds kind of roughly and then throws a code po341, which is cam sensor code, the tach also quits when this happens! when it does this the engine smooths out so I replaced the Cam sensor and Crank sensor with a new one, I also checked to make sure the grounds are good and tight (which they are) Im getting 5. 0 volts to the sensor and it has a ground too! but I dont get a signal off of the sensor, It will also not turn the engine past 2000 rpm either! when I put the truck in gear especially when its warm it wants to stall out, it will start right back up and do the 20second tach and engine light thing over again, I have cleared the codes several times and it still does it! when I drive the truck down the road it will finally go on up to 3500 rpm and shift out but it seems like its in second gear taking off and sluggish! I read somewhere on this site that the computers may need reflashed again, would this make my trucks tach not work and throw a code? I know the cam sensor controls timing etc ! I hope someone can help me ! thanks for reading this ! ps Im checking the codes with a hand held code reader which can erase codes. Joey in Tennessee

 

[BillGotthelf]

Are you sure the ECM was from the same year as the PCM? Sometimes even in the same year they had different programs in the ecm's. Sounds like a communication problem between the 2.

 

[JLittle]

Im really not for sure what year or if it was a manual or auto the engine ecm was from, the metal tag on my old one was burned off so I really had no #s to go by but there is a bar code on back of my burned one, what would you suggest me doing now? can the one I have on my truck now be reflashed to my original year? thanks

 

[GMac]

I had a similar situation on my 2000 except it was a cab fire. It also has a 98 24 valve in it now. Make sure the pcm is for a auto. I think the ecm and pcm is compatible the way it is now. my ecm is the 98 and my pcm is 2001 and i have had no problems. It is worth a shot to get it reflashed. It could be just a little glich.

 

[Marco]

01.5 ECM

I know what happens there.

You've got a ECM out of a 01. 5 truck! Sometimes late in 2000/early 2001 Cummins swapped the softwares. The newer trucks did no longer use a crankshaft sensor. When you run one of those in a truck with the crankshaft sensor what you get is exactly what you're describing.



The fix for your problem is to reflash the ECM with the propper software for your engine.



Marco



Edit. You need the software 353339304J for your engine. ( That's the DC code for the software)( 2000 Automatic federal Normal- not cold weather) I don't think that a DC dealer can flash the ECM to a previous software revision... You'll need probably a good Cummins shop for that.

 

[JLittle]

OK guys, I found out what ecm I have on my engine right now, its a 2001 year part#3947412 And so I need a ECM with Part # 3946242 my truck is a 2000 automatic, with both crank and cam sensors! if anyone has what I need just let me know! I also have a perfectly good 2001 ecm that I can trade on if someone needs it and I have the original burned computer too for someone to take apart if needed? thanks guys for the replys! this is what make this webpage so Great!!