My '94 Oldsmobile four-door failed State Inspection last week because
the driver's side window motor had stopped working (and state law says
that your window must function so that if your blinkers stop working
you can stick your arm out the window and signal... or show the other
driver the Jersey State Bird). So, I read up on the repair and it was
completely straightforward, except that you've gotta watch out for
this counterbalance spring. But when I took apart the door, I
discovered that the motor was a replacement (making it the second to
fail) and the clockspring was missing. I figured that the guy who did
the previous repair had removed the spring--or failed to secure it,
causing it fly off--and not replaced it. I figured this may have
contributed to the motor's failure, as it would be working extra hard.
So I went to the wrecking yard and pulled a whole new regulator and
motor assembly from a '98 Buick Skylark. Same part, same casting
numbers and all, but... no spring. More than that, there was no
provision for one. I pulled the door panel off a '93 Skylark and
found it did have the spring.
The spring-free '98 regulator works fine and I collected my inspection
So... what's the deal here? If the spring was unnecessary, why was it
ever included? Would the motor operate faster or more reliably with
the counterweight spring? Or did they redesign the motors? Might my
spring-free regulator assembly, with its tang and slot designed to
accept the spring, have been a transitional model? Any idea why they
may have eliminated it? Any info (or anecdotes) appreciated.