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no check engine light
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2.5L ('98-'01) Engine running very lean with NO check engine light(98 Ranger) (2.5L) (manual)
Hello, my engine is currently running very lean with no check engine codes. Short term fuel trim reads around +35.9% I ran a smoke machine and found no vacuum leaks. A while ago it was actually running too rich (-23.4% Short Term Fuel trim )and now it seems to have switched around. I replaced...- Alam0
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- lean no check engine light running rough
- Replies: 1
- Forum: 4-Cylinder Engines (1983-2011)