Welcome to our Hemi Family!!! 
Desperately need help!
Greeting my potential lifesavers,
I have a 2015 dodge ram 1500 tradesman crew cab 4x4 5.7l 345 v8 8th digit vin T I still owe 15k on that has been sitting in the yard for over a year that I unfortunately sent a rod through the block of. I rebuilt a 2004 dodge ram 1500 345 v8 motor from the ground up and dropped it in. Everything else is original ecu and wiring harness although the vvt solenoid was no longer present and was altered to a cam position sensor. The map sensor and tps were in a alternate location so the wires had to extended. I Can turn the engine over and it tries to crank when ether is added to the mix it will run while constantly provide with ether. The fuel pressure is fine. All fuses are good. Obd2 codes revised are loss of communication with ecu, no abs, and improper torque readings. What are your thoughts on this do I need a older ecu? Program the current ecu? Would a stand alone harness help my situation? Any advice in the right direction is greatly appreciated.
Many thanks,
1500Tradesman
I have a 2015 dodge ram 1500 tradesman crew cab 4x4 5.7l 345 v8 8th digit vin T I still owe 15k on that has been sitting in the yard for over a year that I unfortunately sent a rod through the block of. I rebuilt a 2004 dodge ram 1500 345 v8 motor from the ground up and dropped it in. Everything else is original ecu and wiring harness although the vvt solenoid was no longer present and was altered to a cam position sensor. The map sensor and tps were in a alternate location so the wires had to extended. I Can turn the engine over and it tries to crank when ether is added to the mix it will run while constantly provide with ether. The fuel pressure is fine. All fuses are good. Obd2 codes revised are loss of communication with ecu, no abs, and improper torque readings. What are your thoughts on this do I need a older ecu? Program the current ecu? Would a stand alone harness help my situation? Any advice in the right direction is greatly appreciated.
Many thanks,
1500Tradesman
1 - 11 of 11 Posts
So you dropped a pre-CAN, pre-eagle into a 4th gen truck....?
Put the correct engine in. Unless you changed the tone wheel to the 58T (04 has 32T), that PCM is gonna hate you. Here's the thing with PCM's....can't really go backwards. You can generally (within CAN) make a newer one work in an older vehicle (retrofit) but not the other way around. Ultimately comes down to you put the wrong engine in. Any particular reason you chose that engine or just grabbed the first 5.7 you could find?What are your thoughts on this do I need a older ecu? Program the current ecu? Would a stand alone harness help my situation? Any advice in the right direction is greatly appreciated.
The can/eagle motor was 4,500 and the 04 motor was $100 after being fully rebuilt it cost me maybe 600 total.
Also I did keep the 04 tone wheel
Greeting my potential lifesavers,
I have a 2015 dodge ram 1500 tradesman crew cab 4x4 5.7l 345 v8 8th digit vin T I still owe 15k on that has been sitting in the yard for over a year that I unfortunately sent a rod through the block of. I rebuilt a 2004 dodge ram 1500 345 v8 motor from the ground up and dropped it in. Everything else is original ecu and wiring harness although the vvt solenoid was no longer present and was altered to a cam position sensor. The map sensor and tps were in a alternate location so the wires had to extended. I Can turn the engine over and it tries to crank when ether is added to the mix it will run while constantly provide with ether. The fuel pressure is fine. All fuses are good. Obd2 codes revised are loss of communication with ecu, no abs, and improper torque readings. What are your thoughts on this do I need a older ecu? Program the current ecu? Would a stand alone harness help my situation? Any advice in the right direction is greatly appreciated.
Many thanks,
1500Tradesman
Someone I know was going to throw it away thought the crank was bad so I snagged it tore it apart and found it was only a spun bearing so I built it from the block up new bearings, crank/cam polished inspected , cylinders honed, new main bearings, one new piston, new rings, etc. once installed the map sensor and tps sensor connectors where in different locations so the wires had to be extended, the connector for the vvt solenoid converted to a cam sensor, the truck turns over and cranks for half a second and will stay running when ether is sprayed into the intake. Even being the improper engine that would make it throw no communication with ecu/abs? Or do I also need a new ecu or wiring harness as well as the newer engine?
2003-2008 motors use one tone wheel 2009+ use another.
So I should swap tone wheels?
For it to even try and work in the 2015 it will need the correct tone wheel. So yes swap it out but that requires removing crank from the truck
Sooo I’m late to the party here, unfortunately yes the crank needs to come out , 54 tooth wheel needs to be installed, the 2015 sensors need to be used.
the MDS will throw some codes, that will need to be felt with, along with the lack of VVT , computer will also need to be tuned to get around the lack off VVT.
it’s doable, been done, so it’s not hopeless.
the MDS will throw some codes, that will need to be felt with, along with the lack of VVT , computer will also need to be tuned to get around the lack off VVT.
it’s doable, been done, so it’s not hopeless.
1 - 11 of 11 Posts
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