The Delco Modulated Displacement Control Unit controls the number of
cylinders in use (4,6 or 8) used by Cadillac in the 80's
There are no spares anymore, so if you like to have your MDA control
checked or repaired contact me. I have setup a test unit for this purpose.
I had to repair my own MDA control unit.
A functionality check cost you $20,00 plus shipping
If the unit need to be repaired it will be about $65.00 (depends how many
I'm located in California