Internal water pump failure on the 3.5L V6 (2007–2014)
Major repair- Generation:
- 1st gen (2007–2014)
- Years:
- 2007–2014
- Engine:
- 3.5L V6 (non-turbo)
The naturally aspirated 3.5L V6 used in the Edge has its water pump inside the engine, driven by the timing chain. When the pump seal fails, coolant can enter the oil; plaintiffs in a since-dismissed class action included two owners of 2011 Edges whose engines failed. Later 3.5L V6 Edges use the same pump layout, so the same checks apply.
Symptoms
- Coolant loss with no visible leak
- Milky oil on the dipstick or cap
- Coolant seepage from the weep hole
- Overheating
Check before buying
- Inspect oil for coolant contamination
- Ask whether the water pump and timing chain have been replaced
- Run a cooling-system pressure test before buying a high-mileage 3.5L
Reported repair cost: Lawsuit alleged about $1,500 in labor for the pump; up to $8,500 for a replacement engine[1]
Sources: [1]