Top 10 1999 Dodge Ram Questions & Answers

Here is a quick test you can perform to eliminate or confirm a problem with the TPS, MAP, Crank and Cam Sensors. A bad Crank or Cam sensor can cause a no start. You will need an Ohm meter.
The PCM has 3 connectors. Facing the controller from left to right, they are labeled C3,C2,and C1.
With the ignition off, disconnect C1. Set your meter for 2K ohms. Disconnect C1 and touch the test leads to pin 17 (5v) and pin 4 (sensor ground). (The pins are numbered) The ohm reading should be somewhere between 600 and 700 ohms. If you see less than 600 ohms start unplugging the sensors one at a time while testing. When you achieve 600 - 700 ohms you have found the defective sensor.
If your sensors are good, I would take the advice of rick7544 and swap out the ignition coil.

Hope this helps....

The first thing you have to do is make sure you have antifreeze circulating through you heater core. To do this turn your truck on and turn on the heater full blast,( not just the fan but your heat control valve ). Next, after 15 or 20 minutes, by that time the engine should be warm put your hand on the hoses going to your heater core. If you have circulation they will both be hot. If you do, means your heater core is not pluged and the problem is with your heat direction doors. This is usually caused from lost vacuum. You may have a vacuum hose off somewhere. Most likely, but not always under your dash, usually in some god forsaken place to get at. Start your vehicle and listen for leaks in vacuum.
Now. After checking the heater core for circulation you find that one hose is hot and the other is not that will mean the problem is in your heater core. Has there ever been any stop leak put in your radiator? This very well could be the sorce of your problem. If you are finding that one hose is hot and the other is not. Let the engine completly cool, several hours. Cold...Now remove the heater hoses from the heater core, Taking care not to make a spill (I know you will it's quite messy) antifreeze is POISENOUS to pets! Take a garden hose and flush your heater core out, both directions several times even after you get a good flow. NOTE: you will not need to use full water pressure to do this and I reccomend you don't use full water pressure because the water pressure in most cities is too strong for your cooling system components.
3rdly: If you do not have any circulation in your heater core. Both hoses are cold. Check the radiator hoses if bottom one is hot and the top one cold it means your thermostat is stuck shut and is the culprit. 3 out of 4 times this will be your problem. Usually the easiest thing to fix also.

NOW KEEP IN MIND: The first thing you must check is your coolant level. Your engine and your heater will not operate properly if this is low.

One more thing I would like to mention. You did not say how your engine heat was. You know, what did the temperture gage read. Was it hot? Was it cold after taking so long warming up and no heat coming out. If your emgine temperture is not up to normal operating temp, and you are not getting any heat. That could be because your thermostat is stuck in the open position, and the thermostat needs replacing.

I hope this helps you. If so please post and let me know.
Thanks!

I have a 1999 dodge ram with a 5.9liter. Come to a stop and bam no pressure. Replaced sending unit twice. First after market, then mopar. Problem is still there. Replaced pump. Problem was still there. So I talked to tons of dodge mechanics, and this is the real problem. Who ever said that these engines are none for sludge is just reall really stupid. BOTTOM LINE ON THAT FACT. Sludge comes from neglect...
Dodges oil pump makes 8-10 Psi at idle. Always mechanically test that no MATTER what. But the sending unit needs 12-14 psi to read it. So what happens is the engine warms up, and the oil thins. Then you come to a stop, and rpms are low, and your not producing enough psi for the sending unit to read it. So your truck is fine. But if the chime is getting to you. Install a high volume pump. I returned the stock one, and got the high volume pump. I will bet if you change your oil every 3,000 miles you will not see sludge at all. If your dodge has high miles replace valve cover gaskets, becauce the high volume pump may cause the gaskets to leak. Whoever said ther none for sludge just has no love for a dodge, or is a moron mechanic that is stuck in his ways. High volume pump is the fix $85.00 plus pan gasket. If you have a 4x4 you can do it yourself. Drop the starter. Remove torque converter cover. With a 13mm socket with a variety of extentions, and removing a dozen bolts. Do it yourselfer will complete it in 4 hours....

It's the IOD fuse. Trust me, I just fixed the exact problem on my '98 not ten minutes ago. The fuse is located in the fuse box inside the driver's side door. It will be the fuse on the bottom and toward the front of the panel with a black cover over it. Just pull the fuse holder straight out and snap the hinged cover forward to expose the fuse. Just a standard 10 amp automotive fuse and you're back in business!

Wes

How did you come to the conclusion that the master cylinder is ok? Does the level of brake fluid in the MCyl. rise & fall while pumping the brakes. I feel no fluid is entering the chamber which has the piston. This piston is directly connected with the brake pedal.Have it checked and the oil seal in it too.....sodeep

Hello, It should actually be an oil sending unit, and is located on the back of the intake manifold to the left of the distributor. *The P0523 is Oil Pressure Sending Unit Voltage too high *P1693 Generic fault indicating a fault in the bus or PCM/ECM interface *P1682 - I can't find this code Anyways, I will post here all the error codes for future reference. Dodge Cummins Check Engine Error Codes Cycle Key on-off-on-off-on to read codes in odometer display P0002 ECM fuel calibration error P0016 Crankshaft/Camshaft Timing Misalignment/Out-of- Sync P0071 Ambient Temperature Sensor Performance / Rationality P0072 Ambient Temperature Sensor Low P0073 Ambient Temperature Sensor High P0088 Fuel Rail Pressure Too High P0106 Manifold Absolute Pressure Sensor Performance / Rationality P0107 Manifold Absolute Pressure Sensor Low P0108 Manifold Absolute Pressure Sensor High P0111 Intake Air / Charge Temperature Sensor Performance / Rationality P0112 Intake Air / Charge Temperature Sensor Low P0113 Intake Air / Charge Temperature Sensor High P0116 Engine Coolant Temperature Sensor Performance / Rationality P0117 Engine Coolant Temperature Sensor Low P0118 Engine Coolant Temperature Sensor High P0121 Accelerator Position Sensor (APPS) Signal Voltage Too Low P0122 Accelerator Position Sensor (APPS) LowAPPS Voltage Input Too Low P0123 Accelerator Position Sensor (APPS) Signal Voltage Too High P0128 Cooling System Error / Thermostat Rationality P0148 Fuel Delivery Error P0168 Fuel Temp Too High P0169 Water-in-Fuel Detected For Too Long P0192 Fuel Rail Pressure Sensor Low P0193 Fuel Rail Pressure Sensor High P0201 Fuel Injector 1 Circuit P0202 Fuel Injector 2 Circuit P0203 Fuel Injector 3 Circuit P0204 Fuel Injector 4 Circuit P0205 Fuel Injector 5 Circuit P0206 Fuel Injector 6 Circuit P0216 Fuel Injection pump Timing Malfunciton [new injector pump time] P0217 Coolant Temperature Too High P0219 Engine Overspeed P0230 Transfer pump circuit out of range P0234 Turbocharger Overboost Condition P0235 Turbocharger Boost Sensor A Circuit P0236 Turbocharger Boost Pressure Sensor Performance / Rationality P0237 Turbocharger Boost Pressure Sensor Low P0238 Turbocharger Boost Pressure Sensor High P0251 Fuel Injection Pump Mechanical Failure Fuel Valve Feedback Circuit P0252 Injection Pump Fuel Metering Control "A" Range/Performance P0253 Fuel Injection Pump Fuel Valve Open Circuit P0254 Fuel Injection Pump Fuel Valve Current Too High P0300 Multiple Cylinder Misfire P0301 Cylinder 1 Misfire P0302 Cylinder 2 Misfire P0303 Cylinder 3 Misfire P0304 Cylinder 4 Misfire P0305 Cylinder 5 Misfire P0306 Cylinder 6 Misfire P0335 Crankshaft Position Sensor Circuit P0336 Crankshaft Position Sensor Performance P0337 Crankshaft Position Sensor Circuit Low P0338 Crankshaft Position Sensor Circuit High P0340 Camshaft Position Sensor Circuit P0341 Camshaft Position Sensor Performance / Rationality P0370 Timing Reference High Resolution Signal "A" P0380 Intake Air Heater #1 Control circuit P0381 Wait-to-Start Lamp Inoperative P0382 Intake Air Heater #2 Control circuit P0460 Fuel Level Sensor A Circuit P0461 Fuel Level Sensor 1 Performance / Rationality P0462 Fuel Level Sensor 1 Low P0463 Fuel Level Sensor 1 High P0477 Exhaust Pressure Control Relay Low P0478 Exhaust Pressure Control Relay High P0480 Cooling Fan 1 Control Circuit/Open (Low Speed Fan Relay) P0483 Cooling Fan Speed P0500 Vehicle Speed Sensor 1 Circuit, or No Vehicle Speed Reference Signal 1 P0514 Battery Temperature Sensor Performance / Rationality P0516 Battery Temperature Sensor Low P0517 Battery Temperature Sensor High P0521 Oil Pressure Sensor Performance / Rationality P0522 Engine Oil Pressure Sensor/Switch Circuit Low Input P0523 Oil Pressure Sending Unit Voltage too high P0524 Oil Pressure Too Low P0532 A/C Pressure Sensor Low P0533 A/C Pressure Sensor High P0541 Intake Air Heater Relay 1 Low P0542 Intake Air Heater Relay 1 High P0562 Battery Voltage Low P0563 Battery Voltage High P0572 Brake Switch 1 Low P0573 Brake Switch 1 High P0576 Cruise Control Input Circuit Low P0580 Speed Control Multiplexed Switch 1 Low P0581 Speed Control Multiplexed Switch 1 High P0602 Control Module Programming Error/NotProgrammed P0604 Internal Control Module RAM Integrity Failure P0606 Internal ECM Processor P0607 ECU Internal Performance P0622 Generator Field Control Circuit P0628 Fuel Pump Relay Circuit Low, or Fuel Lift Pump Control Circuit Low P0629 Fuel Pump Relay Circuit High, or Fuel Lift Pump Control Circuit High P0630 VIN Not Programmed in PCM P0633 SKIM Key Not Programmed in PCM P0642 Sensor Reference Voltage 1 Circuit Low P0643 Sensor Reference Voltage 1 Circuit High P0646 A/C Clutch Relay Circuit Low P0647 A/C Clutch Relay Circuit High P0652 Sensor Reference Voltage 2 Circuit Low P0653 Sensor Reference Voltage 2 Circuit High P0698 Sensor Reference Voltage 3 Circuit Low P0699 Sensor Reference Voltage 3 Circuit High P0700 Transmission Control System (MIL Request) P0743 Torque Converter Clutch Circuit Electrical P0753 Shift Solenoid "A" Electrical P0837 Four Wheel Drive (4WD) Switch Performance / Rationality P0838 Four Wheel Drive (4WD) Switch Circuit Low P0839 Four Wheel Drive (4WD) Switch Circuit High P1488 Auxiliary 5 volt supply output is too low P1492 Ambient/batt temp sensor volts too high P1493 Ambient/batt temp sensor volts too low P1596 Speed Control Switch always high P1597 Speed Control Switch always low P1652 J1850 Communication Bus P1687 No Cluster BUS Message or No Messages from the Mechanical Instrument Cluster P1688 Internal Fuel Injection Pump Controller Failure P1689 No Communication Between ECM & Injection Pump Module P1690 Fuel injection pump CKP Sensor Does Not Agree With ECM CKP Sensor P1691 Fuel Injection Pump Controller Calibration Failure P1693 Generic fault indicating a fault in the bus or PCM/ECM interface P1757 Governor pressure is above 3 PSI when 0 PSI is requested P1762 Governor Press Sensor Offset Volts Too Low or Too High P1765 Transmission 12 volt supply relay control circuit P2121 Pedal Position Sensor 1 Performance / Rationality P2122 Pedal Position Sensor 1 Low P2123 Pedal Position Sensor 1 High P2127 Pedal Validation Switch 2 Low P2128 Pedal Validation Switch 2 High P2146 Fuel Injector Group 1 Supply Voltage Circuit P2149 Fuel Injector Group 2 Supply Voltage Circuit P2266 Water in Fuel Sensor Circuit Low P2269 Water in Fuel Condition P2502 Charging System Output Voltage P2503 Charging System Output Low P2504 Charging System Output High P2509 ECM/PCM Power Input Signal Intermittent P2607 Intake Air Heater Relay 2 Low P2608 Intake Air Heater Relay 2 High P2609 Intake Air Heater System Performance Hope this will help you. Cheers! Ryan

You will find the spark plug gap and timing specifications listed on the vehicles emission label under the hood, and those specifications are the ones to be used on that vehicle and engine for that year, and no other specifications should ever take precedence over the specifications listed on the vehicles emission control label. Here is the firing order diagram for that engine, let me know if you require any further assistance, and I an curious as to how you got taken for $2,000.

is this the one you have?

Hello durtyt: My name is Roger and I will answer your question: Attached is a picture of the fire order for 5.9 Dodge Ram 1500. Should You need further help please just ask. Please rate the answer you received. Thank You for using Fix Ya. Roger

the O2 sensor fuse is located in the fusebo under the hood. its the first 15amp fuse. there is a diagram inside the cover of the fusebo