I pulled a engine from a 02 GC and put it into my 02 Durango. both engines are 16 tooth tone wheels on crank. I used everything from my Durango except the jeep long block and fly wheel. it runs great at high rpm but once it drops to 2000rpm starts missing stumbling. I can keep it running with gas pedal until 5 to 6 coil malfunction codes show then shuts off and blows the asd fuse. the codes range from p0351 to p0358. it will throw 5 to 6 at a time and they are always different. I need help. I replaced cam and crank sensors. im stumped.. all wires look good and grounds were put back into place.

 

someone please help me! I have tried everything I know and dodge dealer couldn't even figure it out....

 

I don't have any experience with the 4.7, but I'm sure someone that does will help you out shortly, people are just busy.

 

Anyone?? Please

 

Gotta chill dude. We help when we can.

First things first, the 4.7 you pulled from the GC, Power Tech block or Magnum block? Durangos use the Magnum block, GC's use the Power Tech block, and I'm not too sure about interchangeability, but I'm willing to bet they are not interchangeable.

Also, try swapping the injectors and coils out for the ones from the GC.

Short of that, I have no idea, and it may be worth your while to contact "Master Tech" here on the forums and get him it chime in. Just do a search on the username

 

I'm not so sure about the blocks being any different, I thought Dodge just called it Magnum and Jeep called it Power-Tech.

 

Never actually looked it up, just figured by the name change there would be differences, however google has corrected me lol.

Next then, how well was the motor running when it was in the GC? Have you checked the condition of the spark plugs?

 

I have Put New Plugs. According To The Junk Yard It Ran Perfect. However I Just Found Out They DroppedmMotor Onto Fly Wheel When Pulling It Out. Could That Have Thrown The cranK Forward And Messed Up The Crank RinG? IT Runs Almost Perfect Running Off Cam Sensor Alone. But Misses And Cuts Out Coils When Crank Sensor Hooked Back Up. Thats How I Can Determine It Has Something To Do With Crank Sensor. All Tests On Crank Sensor Are WithIn Limits. But I Haven't Ran A Scope To See If Its Picking Up On Crank Tone Ring Correctly.

 

does Anyone Know the Normal Ign Adv range? Mine Is About 4 At Idle But Jumps To Over 30 At Above 3000Rpm. That doesn't Sound Right To Me.

 

I'd raise hell if they dropped it and didn't tell you when you bought it.