Ram Auto Shut Down Relay

[Thebaddawg]

I just wanted to throw this out there for any who has a similar issue. Vehicle : 2000 Dodge Ram 4x4 1500 360 auto. Problem : while driving truck had shut off a couple times but started right back up until now when it finally quit with 94000 miles. It turns over with the ASD relay constantly and rapidly clicking on and off. It has no spark but the fuel pump is working with 30 psi and all the wiring has continuity between relays, fuses, fuse box and computer. Did find out after unplugging and replugging each sensor individually that relay stops when upstream O2 sensor is unplugged. It turned out to be the crankshaft position sensor. If the fuel pump, injectors, ignition and ASD relay were all not working I would have checked the crankshaft position sensor right away. I've never encountered a condition where the coil had cycling power while the ASD was clicking and the fuel system working with a bad crankshaft position sensor so before you do what was suggested to me and change the computer or worse the fuse box get a wiring diagram and make sure the wiring is good then check sensor fuctions.

 

[1967coronet440]

Similar issue with my srt Charger, after you top off the fuel it would **** down while driving, only Fix is to have the fuel tank replaced. Dodge issued a TSB and offered owners a new has tank under warranty plus extended the warranty of fuel tank to lifetime. Look it up it might effect your truck, go get your new fuel tank

 

[Thebaddawg]

I wanted to put out this update. The Ram only ran a week and the same condition came back. I did all continuity checks again and sensor checks with everything checking okay and no codes I cut open the entire engine wiring harness and still found nothing wrong. After loosely zip tying everything and reinstalling the harness the truck started and ran till I put it in gear then the same condition was back so while leaving the key on I started lightly twisting and pulling connections. The g105 ground on the front of the block, connected to the top powersteering mount bolt that I had previously cleaned ended up having corrosion and a bad connection inside the sealed ring terminal. It had continuity but was shorting under load. I also ended up replacing that entire wire with 8awg from the factory crimp to the ring terminal because the whole length was black under the insulation. Weather tight crimp and solder but connector and 8awg copper solder on ring terminal with 2 layers of shrinkwrap. It's been running fine since.