-
Mercury Master
3,018 Answers
- Posted on Jun 03, 2011
Re: P1131 98 mercury mystique 6 cyl 2.5
- Bank 1 sensor 1 O2 Sensor. Also with this or they are very known for an intake gasket leak. Make sure to check your vacuum hoses first.
- First check for vacuum leak from a hose. If none are found switch that top O2 Sensor (upstream) If this persists after all that you may have an intake vacuum leak.
Regards,
Tony
×