What is your question?
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What is your question?
I have 4 to locate and replace of C02 censors where would they be located to replace
What makes this problem better or worse?
Check engine light on
How long has your 2007 Mercury Mountaineer had this problem?
Couple months
1 Reply
Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. Stop - do not try to locate and replace sensors. If you do not know where they are located - I cannot imagine that they have been properly tested. Testing is needed to determine if the sensor or sensors are faulty or not. Seek guidance at a shop near you to help troubleshoot your concerns before making repairs. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.