1992 Dodge Dakota 3.9L Manual Transmission 4X4 - Started Dying When Idling, Now Won't Start After Dying A Week Ago.
I recently bought the truck and it seemed to run and drive without any issues. I soon noticed that if it had been running in the last couple hours it would usually run rough when started. I would drive it for about a minute before it would smoothen out. I then noticed if it was idling for a few minutes it would stall. It would previously always start right back up. I checked the diagnostics codes and got a 12 and 62. The dealership salesman said the vehicle runs excellent and has no issues. He also stated the older gentleman who previously owned the truck kept up on maintenance and recently put new spark plugs and wires in. I then gathered that the salesman mislead me and there was probably an issue that the previous owner didn't want to deal with. I put in a new distributor cap and rotor being that they looked a bit old and hoping for an easy fix.
After 8 days of owning the vehicle it again died while idling and has yet to run again. I had the vehicle towed home and have spent the last week hoping to again have the truck running. I have been researching online looking for suggestions of what may be wrong. I have been testing parts trying to find something bad before putting money into something that doesn't fix it.
Here is the current symptoms/issues:
Engine cranks but does not fire/start.
Check engine light no longer illuminates when vehicle is in the run position.
Doing the on-off-on-off-on routine no longer gives any codes.
Maintenance required light is now illuminated majority of the time.
No spark in ignition system.
I have not found any bad splices in the wiring harness but have not found all the junctions that might need to be checked.
Pin 30 of OSD relay and Fuel pump relay is about 12.5 volts.
OSD relay pin 85 and 86 is just under 12.5 volts with ignition in "Run" position.
OSD relay pin 87 is 0 volts in run and start position, -12.5 volts when checked with battery positive, 0 ohms resistance with coil Dark Green/Orange wire.
Coil Dark Green/Orange wire no voltage, -12.5 volts when checked with battery positive while in "Run" or "Start", Black/White wire on coil no voltage & no negative in "Run" or "Start"
Coil input terminals approx. 0.8 ohms, input terminals to High tension is 9,500 ohms.
Pin B & C of camshaft position sensor & crankshaft position sensor has infinite resistance (open circuit).
PCM connector and pins had corrosion, some pin outs were full of corrosion. I cleaned it the best I could until I get some contact cleaner and dielectric grease.
Cleaned battery terminals.
All fuses under hood and under dash check good except under dash #13 4 amp for accessories lights has no power on either terminal.
I am stuck as to the cause of my truck not running. I am guessing Cam Sensor, Crank Sensor, Grounded/Loose wire somewhere, and/or PCM.
Any suggestions/guidance would be greatly appreciated.
Monday, April 15th, 2013 AT 10:17 PM