Dakota no start...please help!!
#1
Dakota no start...please help!!
Hi all. I will be as detailed as I can. I have a 2nd gen Dodge Dakota with a 3.9L 5 speed driveline. Ran like a top until the other day it failed to start. Doing some checking, this is what I know and what I have done: Truck has no spark and no injector pulse, but has fuel pressure and the ASD is cycling as would be expected when the key is turned on. I checked the crank sensor for 5V pulse and it was not present so I replaced it. I checked the cam sensor (pick-up coil) for the 5V pulse and it was not present so I changed it. I realize this probably wasn't necessary, but I know these are prone to failure so I didn't mind. Still no 5V pulse at either sensor. I have a total of 5 troble codes stores in the PCM:
1) P0113: Intake air temp sensor high circuit
2) P0443 Evap emission system purge control valve circuit
3) P0123 TPS "A" circuit high voltage
4) P0118 Coolant circuit high voltage
5) P1492 Battery temp sensor voltage high
I have been through the wiring and I don't see any loose or bad grounds. I have verified all fuses in both boxes are good. I am unsure where to go at this point besides buying a replacement PCM. Any thoughts on what would cause a no start and all these high voltage error codes? Please help!!!!
1) P0113: Intake air temp sensor high circuit
2) P0443 Evap emission system purge control valve circuit
3) P0123 TPS "A" circuit high voltage
4) P0118 Coolant circuit high voltage
5) P1492 Battery temp sensor voltage high
I have been through the wiring and I don't see any loose or bad grounds. I have verified all fuses in both boxes are good. I am unsure where to go at this point besides buying a replacement PCM. Any thoughts on what would cause a no start and all these high voltage error codes? Please help!!!!
#3
What year? Do you have the service manual? Or a voltmeter? Need to check the ground and reference voltage on those sensors. They are possibly sharing a reference voltage.
What did you use to check the cam and crank sensor output with? You will only see millivolts with a meter with the engine running.
Is the ASD relay clicking? That isn't good.
What did you use to check the cam and crank sensor output with? You will only see millivolts with a meter with the engine running.
Is the ASD relay clicking? That isn't good.
Last edited by Friar Tuck; 05-17-2016 at 03:46 AM.
#4
Hi all. I will be as detailed as I can. I have a 2nd gen Dodge Dakota with a 3.9L 5 speed driveline. Ran like a top until the other day it failed to start. Doing some checking, this is what I know and what I have done: Truck has no spark and no injector pulse, but has fuel pressure and the ASD is cycling as would be expected when the key is turned on. I checked the crank sensor for 5V pulse and it was not present so I replaced it. I checked the cam sensor (pick-up coil) for the 5V pulse and it was not present so I changed it. I realize this probably wasn't necessary, but I know these are prone to failure so I didn't mind. Still no 5V pulse at either sensor. I have a total of 5 troble codes stores in the PCM:
1) P0113: Intake air temp sensor high circuit
2) P0443 Evap emission system purge control valve circuit
3) P0123 TPS "A" circuit high voltage
4) P0118 Coolant circuit high voltage
5) P1492 Battery temp sensor voltage high
I have been through the wiring and I don't see any loose or bad grounds. I have verified all fuses in both boxes are good. I am unsure where to go at this point besides buying a replacement PCM. Any thoughts on what would cause a no start and all these high voltage error codes? Please help!!!!
1) P0113: Intake air temp sensor high circuit
2) P0443 Evap emission system purge control valve circuit
3) P0123 TPS "A" circuit high voltage
4) P0118 Coolant circuit high voltage
5) P1492 Battery temp sensor voltage high
I have been through the wiring and I don't see any loose or bad grounds. I have verified all fuses in both boxes are good. I am unsure where to go at this point besides buying a replacement PCM. Any thoughts on what would cause a no start and all these high voltage error codes? Please help!!!!