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- Fri Oct 14, 2016 9:00 am
- Forum: 1992-1999
- Topic: 1992 Pontiac Bonneville cooling fan issue
- Replies: 3
- Views: 2533
1992 Pontiac Bonneville cooling fan issue
Ok, just want to make sure I understand correctly how my cooling fans are supposed to engage. From digging around on this forum, from what I gather, the temp sensor located on the back of the manifold sends the coolant temperature to the ECM. Once the temp reaches 200 degrees the ECM sends a signal ...

