Throwing codes, need Help - Dodge Diesel

roughstock · 05-03-2012, 10:08 PM

Fired up truck tonight, swaped trailers, fired up again and it would barely run. Messed with it, found that if I un hooked the harness for #1/#2 injectors that there was no change, so that indicated that the the problem was with #1and #2. Injectors OHM'd fine. The injector harness ohm'd fine too. So what now? Checked codes: P 2146
What the thing im reading about the AC comp and chafed wires? only wires I see are to AC clutch. NEED HELP. thanks.

roughstock · 05-04-2012, 07:44 AM

Still running rough this AM. could the smarty be causing this? I'll set I stock and try It. Other articles I've read are suggesting a bad ECM. Hoping not. Any help would be appreciated.
Thanks

roughstock · 05-04-2012, 09:22 AM

Update: started up truck to put in shop. Runs fine. ??????
Cleared the codes. Set smarty to stock. Check wiring harnesses again. And Wiggled wires while it was running, couldn't duplicate the issue.
Any suggestions?

jhenson · 05-04-2012, 10:37 AM

P2146 Fuel Injector Group 1 Supply Voltage Circuit.......

Kinda sounds like the plug harness for the front 2 injectors could have a short or something. Unplug it and make sure it's clean and see if that might help. Keep us posted.

roughstock · 05-04-2012, 09:15 PM

Thanks for the update. I checked it, wiggled it, plugged and unplugged. Made no difference. I ohm'd the injector harness, it passed. Could be in harness from ECM to injector harness plug. Didn't go that far this AM. Hoping it isnt the ECM. Truck is running fine now. Gonna run it til something finally quits and then I can find it.

BigIron70 · 05-04-2012, 09:47 PM

Ohm check the injectors should be less then 1 ohm but more the 0 ohms. I usually get .2 or .3 on good injectors using a Fluke multimeter.

roughstock · 05-04-2012, 11:04 PM

Thanks Iron. Did that. They were .2 ohm.
When I unplugged the #1/#2 injector harness plug on side of valve cover, while the engine was running, nothing changed. It didnt run any worse. That makes me think that I lost both #1 and 2 cylinders. Which is why I was thinking ECM. Still hoping not. I was also getting a knocking sound, like injector knock. It came and went when truck was running poorly. At 5pm when I got off work, i loaded SW 3 from the smarty JR and had a fun ride home. Ran great.
A lot of posts for chafed wires at AC Compressor and bad injector wiring harnesses associated with this code.

BigIron70 · 05-07-2012, 11:51 AM

Valve cover gastket has been updated, may want to replace it before going after injectors. Use care when tightening wiring connector nuts to injectors.

roughstock · 05-07-2012, 01:59 PM

Ok. I'm gonna price it and see. Put 500 miles on and problem hasn't returned. Might wait to see If it comes back.

roughstock · 05-07-2012, 02:26 PM

Anyone have part number for updated injector wire harness?

Dr.Dizzle · 05-07-2012, 03:12 PM

The Mopar part number for the injector harness or Rocker Housing Gasket Part is # 05114418AA. They are also available via Cummins as part# 3966805. I have attached a link that shows the part.

http://hoeslidiesel.com/store/page13.html

If you need one ,the Valve Cover Gasket is identified as Mopar part # 05086954AA

jhenson · 05-08-2012, 08:22 AM

The OP's truck is an '03, our valve cover gasket is a basic O-ring design....only thing that can go wrong here is an oil leak if it cracks or splits. I think the gasket mentioned by BigIron was possibly for a later model truck where the wire harness is made into it.

Dr.Dizzle · 05-08-2012, 09:17 AM

Quote:

Originally Posted by jhenson

The OP's truck is an '03, our valve cover gasket is a basic O-ring design....only thing that can go wrong here is an oil leak if it cracks or splits. I think the gasket mentioned by BigIron was possibly for a later model truck where the wire harness is made into it.

I agree! However the part numbers that I provided are applicable to the 03 - 05 model years. The 03-05 harness do fail;however, not as often as the 06-07 harness that is integrated into the gasket.

roughstock · 05-08-2012, 10:38 AM

Yes. My truck is an 03. Is the above PN the correct one?
Thanks.

Dr.Dizzle · 05-09-2012, 09:37 PM

Yes. The part numbers that I provided are correct for the 03 model year.

05-04-2012, 10:37 AM	#4
jhenson "How in the heck do I change the phrase in between my user name and avatar?" Join Date: Oct 2008 Location: Waco, Texas Posts: 1,494 My Photo Gallery My Classified Ads	P2146 Fuel Injector Group 1 Supply Voltage Circuit....... Kinda sounds like the plug harness for the front 2 injectors could have a short or something. Unplug it and make sure it's clean and see if that might help. Keep us posted. __________________ Justin '03 QC 4x4 Dually Willy's Whistler Intake, Programmer, Flux 2's, Valair Ceramic Clutch, NV5600, AirDog 150, Di-Pricol Fuel Pres, Boost, Pyro... Isspro RP, oil pressure, Ride-Rite Bags, Top Gun 2" Spacers, Control Arms, and Track Bar, Majestic Turbo 62/65, Heater Treaters. "Life is tough.....it's even tougher when you're stupid" (John Wayne) *No Guts...No Glory!!! Also, No Guts...No Digestion Of Food!!!*

05-04-2012, 09:47 PM	#6
BigIron70 Registered User Join Date: Feb 2008 Location: SCAL Posts: 3,077 My Photo Gallery My Classified Ads	Ohm check the injectors should be less then 1 ohm but more the 0 ohms. I usually get .2 or .3 on good injectors using a Fluke multimeter. __________________ TYRANNY is Ruling Without Regard to the Laws. 2003 Dodge Ram 2500 CTD , Patriot Blue

05-07-2012, 03:12 PM	#11
Dr.Dizzle Registered User Join Date: Sep 2006 Location: Elkton, MD Posts: 945 My Photo Gallery My Classified Ads	The Mopar part number for the injector harness or Rocker Housing Gasket Part is # 05114418AA. They are also available via Cummins as part# 3966805. I have attached a link that shows the part. http://hoeslidiesel.com/store/page13.html If you need one ,the Valve Cover Gasket is identified as Mopar part # 05086954AA __________________ 2003 - 2500 SLT 5.9 HO 4X4,48RE, Quad Cab Shortbed, Garnet Red Pearl, UnderCover bed cover and tool boxes, Quadzilla Commander, Michelin AT/2, Carli Suspension, Carli Torsion Sway Bar, Raptor fuel pump. 2001.5 - 2500 5.9 ST Quad Cab, 8ft bed, 47RE, White, ARE Cap, Fass, DiPricol fuel and boost gauges, Michelin AT/2.

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05-04-2012, 07:44 AM	#2
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Still running rough this AM. could the smarty be causing this? I'll set I stock and try It. Other articles I've read are suggesting a bad ECM. Hoping not. Any help would be appreciated. Thanks

05-04-2012, 09:22 AM	#3
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Update: started up truck to put in shop. Runs fine. ?????? Cleared the codes. Set smarty to stock. Check wiring harnesses again. And Wiggled wires while it was running, couldn't duplicate the issue. Any suggestions?

05-04-2012, 09:15 PM	#5
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Thanks for the update. I checked it, wiggled it, plugged and unplugged. Made no difference. I ohm'd the injector harness, it passed. Could be in harness from ECM to injector harness plug. Didn't go that far this AM. Hoping it isnt the ECM. Truck is running fine now. Gonna run it til something finally quits and then I can find it.

05-04-2012, 11:04 PM	#7
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Thanks Iron. Did that. They were .2 ohm. When I unplugged the #1/#2 injector harness plug on side of valve cover, while the engine was running, nothing changed. It didnt run any worse. That makes me think that I lost both #1 and 2 cylinders. Which is why I was thinking ECM. Still hoping not. I was also getting a knocking sound, like injector knock. It came and went when truck was running poorly. At 5pm when I got off work, i loaded SW 3 from the smarty JR and had a fun ride home. Ran great. A lot of posts for chafed wires at AC Compressor and bad injector wiring harnesses associated with this code.

05-07-2012, 11:51 AM	#8
BigIron70 Registered User Join Date: Feb 2008 Location: SCAL Posts: 3,077 My Photo Gallery My Classified Ads	Valve cover gastket has been updated, may want to replace it before going after injectors. Use care when tightening wiring connector nuts to injectors.

05-07-2012, 01:59 PM	#9
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Ok. I'm gonna price it and see. Put 500 miles on and problem hasn't returned. Might wait to see If it comes back.

05-07-2012, 02:26 PM	#10
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Anyone have part number for updated injector wire harness?

05-08-2012, 08:22 AM	#12
jhenson "How in the heck do I change the phrase in between my user name and avatar?" Join Date: Oct 2008 Location: Waco, Texas Posts: 1,494 My Photo Gallery My Classified Ads	The OP's truck is an '03, our valve cover gasket is a basic O-ring design....only thing that can go wrong here is an oil leak if it cracks or splits. I think the gasket mentioned by BigIron was possibly for a later model truck where the wire harness is made into it.

05-08-2012, 10:38 AM	#14
roughstock Registered User Join Date: Mar 2006 Location: Iowa Posts: 928 My Photo Gallery My Classified Ads	Yes. My truck is an 03. Is the above PN the correct one? Thanks.

05-09-2012, 09:37 PM	#15
Dr.Dizzle Registered User Join Date: Sep 2006 Location: Elkton, MD Posts: 945 My Photo Gallery My Classified Ads	Yes. The part numbers that I provided are correct for the 03 model year.