Mercury Forum - Mercury Enthusiasts Forums - 1998 Mountaineer with Code P1309

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photog3740

08-23-2005 11:44 PM

I have 1998 Mountaineer that has Code P1309 read with a
scanner. The car runs fine, but this code keeps resetting after I
clear all codes.
Can ANYONE give me an idea where to start?[img]smileys/smiley5.gif[/img]

cctxfish

08-24-2005 04:23 PM

Maybe knock sensor?

rdmcc

08-31-2005 03:06 AM

You must have the code read and see what its for.I dont know off hand what that code is but it sounds like an o2 sensor and if your vehicle has some miles on it I would recommendthat you replace all 4 sensors depending onyou vehicles miles. I hope this helps you good luck and let me know what happens. By the way autozone in some ereas will scan your vehicle for free.

WWEB	12-21-2005 01:47 AM

THAT CODE MEANS SOME TYPE OF MISFIRE MOST LIKELY CAUSED BY CRANK SENSOR NEED DEALER WITH CORRECT TOOLS TO DIAG

chrisbutts

08-24-2006 02:08 PM

Read this...

http://www.ford-trucks.com/forums/24975-code-p1309.html

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