Dodge 4.7 engine 16 tooth or 32 tooth tone ring, how to tell the difference. Dodge made a 2002 4.7 engine, and they made a 2002 and a half 4.7 engine. check the PCM. the 16 tooth tone wheel is used with the early JTEC controller and the 32 tooth tone wheel with NGC controller, two different levels of PCMs and different connectors and harnesses. 3 plugs on the PCM are an indication of a 16 tooth tone wheel, 4 plugs indicate a 32 tooth tone wheel. the 16 tooth tone wheel is used with the early JTEC controller and the NGC engines 2003-2007, (4-PLUG PCM) use a 32-tooth tone ring. the difference between these two vehicles, is the ECU on the 2002 4.7 has 3 connections on the box and the 2002 and half 4.7 has 4 connections. REMOVE the crank sensor under the vehicle using a 13mil. and look inside the empty sensor receptacle hole at the Crankshaft Reluctor Ring Teeth Tone. a 16 tooth on tone ring has WIDER teeth and wider spaces between teeth. the 32 has SMALL teeth. CONFIRMATION: 16 is a 3 plug with external TCM and a 32 is 4 plug, the intake is smooth on s 16 tooth vs the rough 32. note: PCM (Powertrain Control Module), ECU (Engine Control Unit) and ECM (Engine Control Module) terms are sometimes used interchangeably.
no, no, no the wiring harnesses are different, this is why just love chrysler crap, I'm pissed right now because I have to pull the engine again, pulled a 2004 and a 2002 to put the 04 into the 02, and I should have known when the wiring harness from the 04 is plug and play and comes off with the engine and the 2002 wiring stays on the truck. and I'm not about to experiment on a customers truck to meld wiring harness.
I replaced my 4.7 engine in a 2004 ram the engine come from a 2002 both don’t have egr. Now won’t starts is there any way to move the new engine harness and computer to my truck?
so... what about the tooth count difference on the cam gear? are you guys pulling the rivets and putting the older sprocket on to the "new" reluctor wheel or are you doing an entire timing kit. because the chain does not go onto the sprocket of the new one
Dodge 4.7 engine 16 tooth or 32 tooth tone ring, how to tell the difference. Dodge made a 2002 4.7 engine, and they made a 2002 and a half 4.7 engine. check the PCM. the 16 tooth tone wheel is used with the early JTEC controller and the 32 tooth tone wheel with NGC controller, two different levels of PCMs and different connectors and harnesses. 3 plugs on the PCM are an indication of a 16 tooth tone wheel, 4 plugs indicate a 32 tooth tone wheel. the 16 tooth tone wheel is used with the early JTEC controller and the NGC engines 2003-2007, (4-PLUG PCM) use a 32-tooth tone ring. the difference between these two vehicles, is the ECU on the 2002 4.7 has 3 connections on the box and the 2002 and half 4.7 has 4 connections. REMOVE the crank sensor under the vehicle using a 13mil. and look inside the empty sensor receptacle hole at the Crankshaft Reluctor Ring Teeth Tone. a 16 tooth on tone ring has WIDER teeth and wider spaces between teeth. the 32 has SMALL teeth. CONFIRMATION: 16 is a 3 plug with external TCM and a 32 is 4 plug, the intake is smooth on s 16 tooth vs the rough 32. note: PCM (Powertrain Control Module), ECU (Engine Control Unit) and ECM (Engine Control Module) terms are sometimes used interchangeably.
@@yamahazard2698 yeah thinking you can do it while engine is in is funny i thought that was the case til i had to buy a engine stand lol so much easier to trust me but you have to get the motor mounts off also
If you have a 32 tooth engine and put it in a (3 plug 16) tooth jeep will it run?... I have a jeep I had to put a passenger side head in and now i'm getting a engine codes saying intermittent or no signal from cam and crack sensors? any idea. I'm afraid I have an early 2003 jeep built in DEC 2002 with a 16 tooth engine and might have been sold a 32 high output head. could the difference in cams cause problems or timing issues? HELP!!!
ThebillyrayX - did you ever figure this out? If not, a 16 will not run in a 32 or vice versa. check the computer to see which one you have. Should be under the hood on the passengers side near the firewall or on some jeeps I’ve seen them in the right corner where the firewall and the fender intersect. I’m sorry but I don’t remember which is which. (I think the 16 is three plugs and the 32 is four but I could have it backwards). Good luck.
Hi guru, i have a dodge dakota 4.7 2005 4x4 (not HO with egr) and it ''tick'' and the problem come from the #1 piston. What i want is to buy a block only and rebuild it(because i got new heads & timing chains and they work perfect). I have the opportunity to buy a block but it come from a dodge 2005 4.7 RWD (not HO with egr). The question is, are both blocks identical ? will it work ? (my goal is to get experience in block rebuilding and of course, swapping both blocks rapidly without waiting about other poeples to do what i can do myself(lol)and if it work, i will be very happy)
Robert Mueller You might as well rebuild the entire engine since you'd have to take the main and rod caps lose. Might as well replace those bearings and hone the cylinder walls as well as get a valve job while your at it and a rering kit. Cheaper just to find a similar JTEC.
The wiring harnesses to the computer are different. One version has three plugs and the other four. I don’t remember off hand which is which but it definitely matters.
Marco if you check your PCM (Program control module) and it is 3 plug connectors then you have a jtec engine. But if your PCM has 4 plug connectors your engine is a HO (High Output) and it has 32 teeth
Any idea what all might be involved in putting a 2008-up 4.7 in my 2004 Dakota? I can see needing the adapter plate for my cable-operated throttle body and maybe having to fire only 8 of the 16 plugs, but I've heard the 2004 Dakotas might have the right PCM setup. If the swap isn't too awfully bad, I would rather upgrade than simply replace. My original 4.7 told me it needs retiring two days ago, so I have to swap, but would like to upgrade.
porthos6914 - exactly. I made that mistake once. Wasted three days of work to install and then remove the wrong motor. Sucks… and my pride was pretty hurt as well
