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Trucks ecm was reprogrammed about 2 years ago at the dealership. The reason for reprogram was when this issue started and wanted to start with the basics of getting it checked and reprogrammed.

Finally got cold enough outside this morning and drove the truck same problem no rail pressure. Done an experiment and heated the ecm with a heat gun and no change on rail pressure. Next I heated the ambient air temp sensor and finally got it to about 130 degrees. Drove the truck ran fine until...

I am running a smarty as well but it doesn't matter if it is on the truck or not. Just replaced the air inlet temp/MAF sensor, coolant temp sensor, and MAP sensor as well. Gonna try it later this week and let you know. Also don't have any codes either. Exhaust doesn't smell any different than...

Truck is a 2003. The rail pressure is about 6000 psi at idle and when running about 70 mph will only gets to about 8000 psi unless I am running about 80-85 then it is at about 15000 psi all while temps are below 40 degrees and the truck runs like crap. If the temp is above 40 I have no problem...

The only problem is you can't buy the older style connector tubes any more, and the connector tubes are torqued to 37 ft. lb. which is factory spec. I'm going to go back and make sure the connector tubes are seated correctly with the injectors like it says from the factory and see if that helps...

Yea the cross over tubes that you buy from the dealership now are correct and come from a 6.7L. The stock cross over tubes are .072 and the ones you buy now are .116 in diameter. They may not look right when you get them but they fit fine no problem.

Have changed both injector and cross over tubes both. The injectors are Industrial Injection 125 HP and the cross over tubes are the superseded ones from Mopar which actually come out of a 6.7L and are much larger than stock. I don't think it is gonna get cold like that here any time soon now...

The truck is an 03 5.9 changed the fca, no change, changed the rail sensor as well, no change, and when it is above say 50 outside it will run whatever pressure you want it to. Give it WOT and it will hold a constant 25,000 PSI. What else do you need to know?

When the temp is 45 or below rail pressure will not get any higher than 12,000 PSI but when the engine starts to warm up the CP3 will rise consistently and after it does the pump will pump whatever you want it too. Fuel pressure is a consistent 18 PSI. The CP3 is an Industrial Injection Reman...

fuel filter and disconnecting the batteries didn't help any. not sure where to go from here.

mine does too. I just replaced my fuel filter and see if that helps. also disconnected my battries for an hour from both positive and negative. also someone told me it might be the throttle position sensor.

Got a 2003 Ram 2500 Cummins with NV5600 manual trans, and when I have my air conditioning on coasting down the road with my clutch pressed getting ready to slow down, the truck fluctuates in rpm from 750-900. Have no problems with the ac gets real cold. Also checked my codes at work no codes but...

I replaced it with a Dorman brand from Advance Auto Parts.

I am overheating and getting the codes both. Usually get to about 210 degrees and the conditions are usually in stop and go traffic, but when I start goin down the road it cools off where its suppose to be which is just below the 200 degree mark.

Having an overheating problem after I repalced my fan clutch about a month ago. Already replaced thermostat about a year and half ago and the water pump about a year ago. Getting a P0480 and a p0483 codes also. I already know what the codes are because of Smarty and manual. Is there any kind of...

not sure. dont have the equipment to clear the code and when i disconneted the batteries the code was still set and check engine light was still on.

I have a 2003 Dodge with Fass Titanium, and TS Performance MP8. Already replaced cam shaft position sensor and checked the wires, and no problem. Ran fine for a week and turned my chip back up and started missing again. Now have a check engine light on for the same problem even after...

have an 03 ram 2500 and just replaced fuel return line on the frame. truck has a fass fuel system on it. drove it for 2 days and ran fine. third day idled down real hard and almost cut off . drove it for the day no problem. then this morning cranked it up and shut off a few seconds later and it...

have an 03 ram 2500 and just replaced fuel return line on the frame. truck has a fass fuel system on it. drove it for 2 days and ran fine. third day idled down real hard and almost cut off . drove it for the day no problem. then this morning cranked it up and shut off a few seconds later and it...

Johnnie Bishop