A facebook user named Peter Carr in the Seattle WA area owns a 1993 240 he is mechanically restoring.

I have beseeched, bagged, cajoled Mr. Carr and other RWD Voovo facebook forum users, to search and ask at the brickboard, for better guidance on all RWD Volvo concerns here for years. Facebook refuses brickboard link pasted in threads and in the messenger service.

Trying to drive more fb users to a truly helpful form. No one here replies with "+Turbo" it or crush it. If performance info they want, I mention and paste a link to the Turbobricks forums.

New calipers all around, new flex brake lines at the front, Motive Power bleeder fluid flush. Was a problem before. The problem persists.

The ABS master cylinder and the brake light fluid switch are original.

On ABS, pressure switch merely checks balance between two front calipers and the rear calipers, yes? I forget. Google and Bing searches are useless, like the Haynes manual.

I've asked Peter Carr to followup here.

While logged into your facebook account, see the thread at this link (copy and paste):

https://www.facebook.com/groups/vopnw/permalink/1666092083559969/

Thank you.
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Beh.