Excellent.. thanks for posting the link.
I became a Mark7 owner only because Lincoln Service Dept. was unable to diagnose a problem and therefore wanted $3,500 for an entire new brake system (around 2001) before they would warrantee their work.
So, someone gifted me the car, with a market value of maybe $1,000 on a good day.
And only because of this, I noticed something missing in the anti-lock braking system diagnostics. I mentioned it previously in this thread.
There's a
filter in the brake fluid reservoir.
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Quoting from about half way down the page:
"Basic Troubleshooting"
"Hard pedal Amber Anti Lock and Red Brake Light always on."
[snip]
If the pump runs, most likely you have a bad Accumulator or the pump is not being supplied with fluid because sediment has plugged the low pressure hose leading from the reservoir. Check the hose is unplugged and if that doesn’t correct the problem replace the Accumulator. If this doesn’t fix your problem you are into a high buck Pump Assembly replacement.
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This might be true of
"1989-1992 Thunderbird SC ABS Systems" as the article is titled, but I have a '88 Mark7 LSC, and there's more to it.
Even if the "low pressure hose is clear", the upstream filter may be clogged. The easy test is to just pull the hose off the reservoir and observe if fluid streams out from the hole, or not.
(In my case, Lincoln's examination can't have included this test or they'd have caught it
But on the bright side, if they did, I wouldn't have this nice car today
)
The fluid reservoir is opaque.. the filter is difficult if not impossible to see.
I cut my original reservoir open and took the little corregated-paper filter out, so I know it exists. (My intention was to replace that filter and somehow reassemble the reservoir.)
Otherwise, that ABS page was most enlightening.. i thank you and my ride thanks you...