This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. If the charging system is not operating properly, repair as necessary. He checked everything with a fine tooth comb and nothing jumped out as being wrong, but he fixed it. Posted on Feb 21, 2011 www. In addition, one time this week on a cold start the truck hunted at idle and idled at to 1000rpm, shut the truck off, restarted and it has run fine since then. It has been running great for over a year and I haven't seen that code since Knock on Wood. Our goal is to provide a fun, easy and efficient automotive shopping and service experience.
The solution is here : P0251 Possible Solution: Gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. Note the location of the fuel control actuator on the high-pressure pump, and the location of the pressure sensor on the fuel rail. Connect a test light between ground and terminal No. Took the time and one mornin retorqued all the crossover tubes and has not comeback. Fuel injection pump relay may also be referred to as fuel pump relay.
If this can't be accomplished pull the plugs and check the condition. Misfires can be caused by ignition problems, fuel problems or compression problems. Other than a potential no start or stall condition, it is generally not extremely serious. Your Cummins is electronically controlled so oil condition is important, fuel leaks, oil leaks, leaks in the air ducting between the turbo and the intake, sensors, water in the fuel. Oh, It can still be diagnosed, but the time required to do so may be multiplied several times. If resistance is 5 ohms or greater, repair open in Black wire between cavity No. It seems the crank sensor that reads from a notch on the harmonic balancer was the problem Without this sensor reading that the engine is running the alternator wont charge.
Would pop up here and there. If you might know or even have a idea where to start I would be very happy. Jason The electrical side of it has circuits that run from the power-train control module to the optical fuel temperature sensor. Now don't ask yourself; What should you do with P0251 code? That can be a problem. I have changed the fuel filter. Turn ignition on with engine off.
It just started doing this about a week ago. Also this 05 puts out more black smoke under acceleration. Posted on Mar 22, 2009 Well, let's see. I have pulled the fuel tank off and cleaned everything. Fuel economy calculations based on original manufacturer data for trim engine configuration. Best bet is to just change them out, i know it can get expensive! If the plug wires are out of sequence, the explosion occurs at the wrong time.
This is the most friendliest Cummins forum you'll ever join. In some applications, these components are located inside the high-pressure injection pump. The first 3 times the code was thrown I found the passenger side negative battey cable was slightly loose. Thank you, for understanding and whitelisting Mopar1973Man. Fuel delivery problems could be: A plugged diesel fuel filter An in-tank blockage Air in the fuel due to a cracked in-tank fuel ine above the fuel level Bad transfer lift pump Injection pump out of time Possible Solutions: First, simply check if your injection pump timing is adjustable. Connect a test light between ground and cavity No. Then the lift pump will operate for 25 seconds.
Note also that although this particular system employs an electric lift pump in the fuel tank, not all applications are so equipped. If that code is no longer there, it can only be a result of somebody clearing the computer memory. Does it seem to fall on its face on heavy acceleration? How serious is the P0251 code? I do not believe that it is service separately from the fuel injection pump. First find out which components are applicable for your vehicle. If resistance is less than 5 ohms, go to next step. What repairs can fix the P0251 code? Also this truck exhibits far more black smoke under acceleration than other 3rd gen Dodge 5. Truck has good power, accelerates well, the turbo spool is more noticeable on this truck than our 04 truck.
If the voltage is less than 12 volts, recharge or replace the battery as necessary. Please confirm the accuracy of the included equipment by calling us prior to purchase. When you see P0251 engine fault code on your engine code reader this description will help you. With the fuel hose connected the fuel pressure should be 10psi. Or a abundant amount of fuel is detected in the feedback circuit? YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle.