I need help my ECM-B fuse (10 Amp) continues to blow and I need ideas of where to start looking for the short. This is an 89 suburban 4x4 350 TBI.
The first three times this happened it would only occur when I was in reverse, I would swap the fuse and things would seem to be fine for a while. I took 1.5 hour trip with no problems. I didn't worry much becuase I don't use the truck much and it didn't appear to be a problem when going foward, until today...
I was on my monthly trip to the municipal yard-waste site when turning in to the drive..bam...truck shuts off. I knew it was the fuse but was worried becuase this was the first time it happened when driving foward. My fears were warranted becuase after I inserted a new fuse it blew instantly when I turned the truck on.
I went through 3 fuses before it occurred to me that the problem use to only occur in "reverse" maybe the problem is happening in "park" gear position now too. So I shifted to nuetral and tried a new fuse. It worked!! Truck started so shifting seemed to shift or adjust the shorted wire to eliminate the short. But then I went out to shut the hood and the engine killed instantly. So it was a short-term fix and shutting the hood wiggled the wire enough to cause it to short again.
After the single glimmer of hope that was dashed when I shut the hood, the fuse now blows instantly no matter what position I have the gear shift indicator. I had the truck towed home so I can begin the investigation. But I could use all advice both specific to this problem and general advice for finding shorted wires.
Becuase it seems related to my gear shift indicator and steering and the general steering column area What major wires could this be? It is the ECM-B fuse..which is the battery feed to the ECM. So whatever wire has the short, it is it is related to the ECM. Does the gear shift indicator go to the ECM?
All insight or advice appreciated...
Sincerely,
Nate
The first three times this happened it would only occur when I was in reverse, I would swap the fuse and things would seem to be fine for a while. I took 1.5 hour trip with no problems. I didn't worry much becuase I don't use the truck much and it didn't appear to be a problem when going foward, until today...
I was on my monthly trip to the municipal yard-waste site when turning in to the drive..bam...truck shuts off. I knew it was the fuse but was worried becuase this was the first time it happened when driving foward. My fears were warranted becuase after I inserted a new fuse it blew instantly when I turned the truck on.
I went through 3 fuses before it occurred to me that the problem use to only occur in "reverse" maybe the problem is happening in "park" gear position now too. So I shifted to nuetral and tried a new fuse. It worked!! Truck started so shifting seemed to shift or adjust the shorted wire to eliminate the short. But then I went out to shut the hood and the engine killed instantly. So it was a short-term fix and shutting the hood wiggled the wire enough to cause it to short again.
After the single glimmer of hope that was dashed when I shut the hood, the fuse now blows instantly no matter what position I have the gear shift indicator. I had the truck towed home so I can begin the investigation. But I could use all advice both specific to this problem and general advice for finding shorted wires.
Becuase it seems related to my gear shift indicator and steering and the general steering column area What major wires could this be? It is the ECM-B fuse..which is the battery feed to the ECM. So whatever wire has the short, it is it is related to the ECM. Does the gear shift indicator go to the ECM?
All insight or advice appreciated...
Sincerely,
Nate