Question about 1990 Lincoln Mark VII

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Just got a 2001 Lincon Towncar /Exec-L series from a friend. The ABS, Check engine & Brake lights kept coming on & off. Ran codes and got U1039 & P0306. Replaced the #6 Coil and all plugs(P0306 ) - RUNS LIKE A CHAMP - smooth, powerful and quite again! But the U1039 code won't resolve & the ABS, Brake & Check engine lights still comes and goes. Also, the speedometer comes and goes with it. I am a bit of a car buff, you just point me in the right direction and I'll fix it! Thanks guys!

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  • Lincoln Master
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Congratulations on getting it to run like a champ.

The ABS light is likely due to a bad wheel speed sensor, which would be consistent with the speedometer coming and going.

Try to get an Actron Brakescan Tool for about $99 or so plus shipping, and you can scan the codes and get English explanations of which circuit is bad.

I purchased one to diagnose and repair a 1997 Cadillac Deville. The Actron Brakescan tool covers most American vehicles from 1996 to 2005. So, this diagnosis should be right up the alley of this tool.

One can go from there as far as checking out the sensors and the wiring more closely.

Posted on Oct 09, 2010

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