Old Man
New Member
- Joined
- August 8, 2006
- Messages
- 2
- Reaction score
- 0
- City, State
- Tennessee
- Year, Model & Trim Level
- 93 sport Explorer
I ran a test for codes on my 93 Explorer 4.0. Code 538 came up, Invalid cylinder balance test due to CID circuit failure. The engine has lost power and runs bad. What would you check first?
Old Man,
Old Man,