Hello all. Very new to this forum. I recently purchased a 1994 Jeep Wrangler 2.5 MT. Long story short, I got this for a great deal, it had been sitting for 7 months before I got it. All it needed was a fresh battery and bam , started first try. It needed a bunch of maintenance, I’ve replaced a bunch of stuff because of age. About every sensor, coolant system, starter, alternator, you name it I’ve most likely replaced it.
So on to my issue, after it not running for about 2 weeks while I was refreshing the engine, the first start up was very rough, like idling rough, (it’s open headers just about, put a shorty header on with down pipe), with an instant engine light, of “fuel injector output driver”. After doing research, checking voltage, ohming wires, I looked at the ecm. The ecm had 2 burnt capacitors. So, sent the ecm off to get 3 new capacitors. Got the ecm back, plugged it in, it started and ran fine for about 35 minutes (still rough rough idle), it completely died, randomly. I had lost fuel pump prime, and spark, and the engine light will not illuminate when key is turned. I’ve spent 10 days testing every possible theory to why this happened. Tested fuses, replaced relays, checked fuel pump wires and pump, I get power everywhere power needs to be. (Cleaned and replaced grounds as well). So my simple question is, can the ecm be faulty even with new capacitors? Does this sound like the ecm is at fault ? Any help is much appreciated, I’m at my Wicks end here.
So on to my issue, after it not running for about 2 weeks while I was refreshing the engine, the first start up was very rough, like idling rough, (it’s open headers just about, put a shorty header on with down pipe), with an instant engine light, of “fuel injector output driver”. After doing research, checking voltage, ohming wires, I looked at the ecm. The ecm had 2 burnt capacitors. So, sent the ecm off to get 3 new capacitors. Got the ecm back, plugged it in, it started and ran fine for about 35 minutes (still rough rough idle), it completely died, randomly. I had lost fuel pump prime, and spark, and the engine light will not illuminate when key is turned. I’ve spent 10 days testing every possible theory to why this happened. Tested fuses, replaced relays, checked fuel pump wires and pump, I get power everywhere power needs to be. (Cleaned and replaced grounds as well). So my simple question is, can the ecm be faulty even with new capacitors? Does this sound like the ecm is at fault ? Any help is much appreciated, I’m at my Wicks end here.
