1992 Volvo 940 "random black box pop" Questions

...black boxes" . Unless you're an experienced technician, this is probably a dealer or independent Volvo specialist job to read and recommend the needed repairs. The great temptation is to leave the ...

...random cylinder miss fire, secondary air error. Pop the heed, see the air box on the very left? On top of that box is the Ignition Control Unit. Little black square w/ winds about 1/2" thick.... That ...

...black box very easy to change. You can find them online from 60 to 100 dollars. Conversely it could also be the multifunction switch. This is a little black box near the end of your turn signal level ...

...black trim surrounding the radio or temperature controls. I had to remove four plastic screws and anchors (two on each side by the drivers legs and the passengers legs). I had to disconnect the ...