TJ79Cheyenne
Full Access Member
- Joined
- Dec 21, 2013
- Posts
- 64
- Reaction score
- 0
- Location
- Somerset, WI
- First Name
- Torrance
- Truck Year
- 1979
- Truck Model
- C20
- Engine Size
- 350
How do I tell if my ECM is going bad or is bad? I have an 87 R10 that will not idle right. I set the timing to 0 and plugged the computer back in. Plug the computer advance in and the idle goes up and down.. Any ideas to help me out would be awesome!