Question about 2004 Dodge Ram 2500

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Cummins wont start when cold

I checked the air intake heater elements and it is good. I don't know how to check anything else. Can you help?

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May be a check valve letting warm expanded fuel to slowly leak back to the tank causing hard start. When starting cold its harder to move the cold thick fluid. Check into it. Good luck..

Posted on Aug 29, 2009

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1989 GMC Sierra 1500 heater blows cold air. Changed thermostat. Both hoses are cold.


check antifreeze level add if low, and check intake heat control valve on ps side of intake if its locked shut it can be removed and a water pipe nipple put in place of it and the heater hose reconnected..if the water pump is good, it should give heat this valve should be on the intake with a heater hose connected to it..and its vacuum operated but will jam shut with age and cold weather..good luck..

Jan 19, 2013 | 1989 GMC Sierra

1 Answer

Code po380 glow plug heater circuit a malfunction 2001 dodge cummins how to fix


DTC P0380 - Glow Plug/ Heater Circuit "A" Malfunction

Power to the 2 intake heater solenoids (relays) comes directly from the left battery positive cable. There is a harness that connects to the battery positive cable and then has a fusible link for each relay and then connects to one of the studs on each relay. Your fusible link in the harness may have blown. If so you can purchase this harness from the dealer, or go to your auto parts store and buy a fuse link and repair it yourself. Also inspect the end of the harness that connects to the battery.

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Zoom Image Diagram HERE
Symptom:P-0380 - INTAKE AIR HEATER RELAY #1 CONTROL CIRCUIT

When Monitored and Set Condition:P-0380 INTAKE AIR HEATER RELAY #1 CONTROL CIRCUIT

When Monitored: First 1 second of ignition on.Set Condition: ECM does not sense intake air heater relay turned on.POSSIBLE CAUSES- DTC NOT EQUAL TO FREEZE FRAME DTC ENGINE CONTROL MODULE- INTAKE AIR HEATER RELAY #1 CONTROL CICUIT OPEN- INTAKE AIR HEATER RELAY #1 CONTROL CIRCUIT SHORTED TO GROUND- INTAKE AIR HEATER RELAY GROUND CIRCUIT OPEN- INTAKE AIR HEATER RELAY #1

TEST ACTION APPLICABILITY1 Ignition On, Engine Not Running.With the DRB read DTC's.Is the DTC SPECIFIC GOOD TRIPS displayed and equal to 0?Yes - Go To 5No - Go To 2

2 Ignition On, Engine Not Running.With the DRB read the DTC's.Determine if the DTC matches the Freeze Frame DTC.Is the DTC equal to Freeze Frame DTC?Yes - Go To 3No - Repair the DTC with the DTC data.

3 Ignition On, Engine Not Running.With the DRB read DTC's.Read the Freeze Frame data.Try to duplicate the conditions in the Freeze Frame.Did the DTC Specific Good Trips change to 0?Yes - Go To 5No - Go To 4
4 Ignition On, Engine Not Running.Note: Intake Air Heater actuation time must be kept at a minimum due tohigh current draw.With a voltmeter, measure the Battery B(+) terminal and record the result.With DRB, actuate #1 Intake Air Heater.While actuating, use the voltmeter and measure the Battery B(+) Terminal.Stop actuation test.Did the battery voltage drop 0.5 volt of more during actuation test?Yes - Test Complete.No - Go To 5

5 Ignition Off.Disconnect the Intake Air Heater Relay #1 Control Circuit.Note: Check connectors - Clean/repair as necessary.Disconnect the Engine Control Module Connector.Note: Check connectors - Clean/repair as necessary.Using an ohmmeter, measure the resistance between the Intake Air Heater Relay #1Control Circuit and Ground.Is the resistance below 5.0 ohms?Yes - Repair the Intake Air Heater Relay #1 Control Circuit for a shortto ground.Perform Powertrain Verification Test VER-5A.No - Go To 6

6 Ignition Off.Disconnect the Ground Connector at Heater Relay #1.Note: Check connectors - Clean/repair as necessary.With an ohmmeter, measure the Ground Circuit to ground.Is the resistance below 5.0 ohms?Yes - Go To 7No Repair the open Ground Circuit.Perform Powertrain Verification Test VER-5A.

7 Ignition Off.Disconnect the Intake Air Heater Relay #1 Control Circuit.Note: Check connectors - Clean/repair as necessary.Connect one end of a jumper wire to the Open Relay Terminal and briefly tap theother end of the jumper wire to B+.Did the Intake Air Heater Relay click?Yes - Go To 8No - Replace the Intake Air Heater Relay #1.Perform Powertrain Verification Test VER-5A.8 Ignition Off.
Disconnect the Intake Air Heater Relay #1 Control Circuit.Note: Check connectors - Clean/repair as necessary.Disconnect the Engine Control Module Connector.Note: Check connectors - Clean/repair as necessary.Using an ohmmeter, measure the resistance of the Intake Air Heater Relay #1Control Circuit from the Engine Control Module to the Relay.Is the resistance below 5.0 ohms?Yes - Go To 9No - Repair the Open Intake Air Heater Relay #1 Control Circuit.

9 Ignition Off.If there are no other possible causes remaining.View repair options.RepairReplace the Engine Control Module.

Hope this helps.

Mar 07, 2012 | Cars & Trucks

1 Answer

It is 03 dodge ram 2500 5.9 . It dose not like to start. I have replaced the starter the batties and injection pump the injection. U can roll start it and it will run great could ask for a better...


DID YOU CHECK THE GRIDE HEATER OR SELENIODE
CUMMINS USE GRIDE HEATER (INTAKE HEATER) TO REPLACE GLOW PLUGS
SELENOIDE IS SPECIAL FOR THAT JOB MAY LOOK LIKE REGULAR BUT ITS NOT
CHECK WITH KEY ON EARLY IN AM TO SEE IF HEATER IS GETTING POWER
USED AT 12 VOLT TEST LIGHT AT HEATER INPUT MAKE SURE GROUND IS GOOD
IF NO POWER CHECK SELENOIDE TO SEE IF POWER IS THERE IF NO POWER
CHECK LIVE SIDE OF SELENIDE THEN CHECK SIGNAL SIDE (KEY ACTIVATED SMALL WIRE) IF NO SIGNAL POWER CHECK FUSE IF NO MAIN POWER BACK TRACK TO BATTERY

Apr 18, 2011 | 2004 Dodge Ram 2500

2 Answers

Po540 code


DTC P0540: Intake Air Heater - Incorrect Voltage

The Engine Control Module (ECM) uses an Intake Air Heater (IAH) to warm the incoming air for proper cylinder combustion. The ECM grounds the control coil of the IAH relay to energize the heater during cold weather operation. If the ECM detects voltage on the IAH circuit when the relay is commanded OFF, or incorrect voltage when the relay is commanded ON, this DTC will set.


There are several possible causes for this code including:

Faulty IAH Relay

Faulty IAH Relay Control Circuit

Faulty Line Voltage Reference Circuit

Faulty Heating Element

Faulty ECM

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1 Answer

03 cummins hard start in cold weather,will start easy if pluged in,has code p0113


DTC P0113 is Intake Air / Charge Temperature Sensor High,
Check wiring to the sensor and if that is good then the sensor may be dirty or bad.

the link below shows what it looks like and has a price for the sensor.

http://www.genosgarage.com/prodinfo.asp?number=4984570

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Well, Hate to say this to you but your Cummins 24v turbo diesel does not have glow plugs. The fuel temperature necessary for proper ignition is heated by an element inside your fuel filter housing.

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When swapping intakes you may left something unplugged or unhooked recheck the swap and connect any item left.

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1 Answer

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when you start the truck do your lights dim and your volt gauge fluctuate. if they do, i would think the grid heaters are working. could be an injector going out

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