How to fix 2003 Dodge Cummins P0483 P2509 won't start

How to fix 2003 Dodge Cummins P0483 P2509 won't start . The fan clutch is the problem. It will often times start if you unplug the fan clutch plug located on the passenger side of the bottom of the radiator. Once the fan clutch gets bad enough it causes the Engine Control Module to not power up. This causes the no start condition as well as a Diagnostic Link Connector to not communicate. Cycling the key three times will still give you codes on the odometer though.

Category:

Autos & Vehicles

Tags:

• How
• to
• fix
• 2003
• Dodge
• Cummins
• P0483
• P2509
• won't
• start

[haoleboy74]

Thanks for the post. Very helpful information.  The ECM shut down the fuel system so I thought it was the fuel lift pump. After wasting my time the pump checked out okay. I changed the clutch and it fired right up.

[briansmobile1]

@haoleboy74 You're welcome- it's a tricky new thing eigh?

[evildesl]

@haoleboy74

my question is this.. My 03 cummins has not be starting at all lately. But no codes. I was told the injectors were bad. Cahnged those. Truck ran great for a week.. Then it went back to no start. the only way to start is with a wiff of starting fluid on the air filter and it will fire everytime. once its been running for awhile it will start up no problem. but let it cool more than 2 hours and your quick starting again. Could it have something to do with the fan? i dont here it

[briansmobile1]

@evildesl It takes a TON of fuel pressure to start those initially. You have one or more bad injectors that's leaking disallowing enough pressure to start.

[Hermanvogel]

Most larger auto parts will lend you TWO Wrenches that fit this fan clutch. You won't have to worry about jarring the pump with the chisel. Bad Idea. Make darn sure you have clearance between the fan and the dumbazz place they put the wire...if not you will wrap the wire around the fan and you will be building another $280.00 clutch.

[briansmobile1]

@Hermanvogel I'm like you- I REALLY DIDN'T LIKE the chisel idea when I was taught it seven years ago. I didn't like the marring to the nut or the hammer concept. Having used it for seven years I find it doesn't adversely affect operation or longevity of the pump or fan clutch. AND no one cares what the fan clutch nut looks like and it's ready to go the next time.

[briansmobile1]

@kanepit047 You need to try starting fluid to by-pass fuel system. If that doesn't work check for spark and injector pulse.

[kanepit047]

2003 dodge ram 1500 4.7 wont start its cranking just fine battery is good the fuses are good but it wont start.

[westcokid]

Good stuff man!!

[briansmobile1]

@rodney1426 Nice one. I'll make me one!