98 Dodge Ram 1500 5.9L V8 Mag. so i drove it the other morning and then was messing with Therm sensor and something shorted out. Now my check engine, trans temp and overdrive off light are on. It turns over but not starting, replaced the fuel relay and crank position sensor. Still will not start, could it be the PCM/ECU? someone please help....

25

Asked by Mar 11, 2016 at 08:57 PM about the 1998 Dodge Ram 1500 4 Dr Laramie SLT Extended Cab SB

Question type: Maintenance & Repair

IS IT A BAD PCM/ECU?

6 Answers

70,285

Could be,but first thing i would do is check for fuel and spark,see which one or both is the issue,may be a simple as fuel rely bad because of shorting out,but would help me help you to know if you have spark and fuel?

25

I replaced the fuel relay and crank position sensor as well checked to see if fuel pressure is good. Not seeing spark coming to the plugs.

1 of 1 people found this helpful.
70,285

Check your main fuse/ecm it will be 30 amp.

25

I will double check, but if that is not the problem what could it be?

1 of 1 people found this helpful.
70,285

The ecm fuse would be my first check,it is there to protect the ECM from shorting out,if it is good you ma have hurt the ECM.

25

is there any other fuse then in the fuse box I should check?

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