1987 GMC Jimmy
Automobile Hoarder
- Joined
- Jan 23, 2016
- Posts
- 5,848
- Reaction score
- 2,390
- Location
- Mississippi
- First Name
- Jesse
- Truck Year
- 1987
- Truck Model
- V1500 Jimmy
- Engine Size
- 350
I have an ECM problem that has reared its ugly head twice now. I already had to replace the old fried ECM on my Caprice once, and it fixed all the erratic, intermittent symptoms I had. I have now lost reference from my ECM a mere month since replacing it. It runs rough on idle and off idle and will cycle between super rich and super lean. I've checked the two fuses, and they are fine. The only thing I've found wrong is a snapped or chewed green ground strap or wire of some sort that spans from a wiper motor bracket to where it goes into the firewall under the heater hoses. It was chewed once already, and I crimped it together near where it's broken again. Does this wire have something to do with this, do I have a circuit overloading that's killing my ECM, or was this a faulty reman, and I just have to get another one?
