gman35

Has anyone or does anyone know how difficult or what is needed to convert a 1987 c4 from standard seats to sport seats.. sport seats are coming from a 90 or 91 C4 coupe.. thanks, Gggg

don hall

Remove one seat, and compare floor bolt pattern to new seat bracket
bolt pattern. It the patterns match, you are good-to-go.

Without an air pump and tubing, the lumbar bags will not inflate, so
don't expect any inflation when you activate the seat buttons.

gman35

Hey, thanks for the reply and help'' sport seats are coming complete.. pumps,vacuum tubes.. wireing and connectors.. there is two orange/black two wire oem connectors under my console.. seats are out of a 90 or 91... I was hoping to be able to bolt them to mt existing seat tracks.. thanks, gary

don hall

It would be wise to bench test the air pumps before installing.
Just connect wires to a 12V charger to activate pumps.

The air pumps utilize a 'flimsy' rubber diaphragm which is prone to rupturing. When the diaphragm ruptures, it jambs the pump mechanism, and no air or noise will be generated. If the pump is working, you will sense the vibration, and feel air flowing out through the air tubes ends.

If a diaphragm is ruptured, it can easily be replaced using an old bicycle inner tube and a 1-½" punch. See Tech Tips for simple
instructions.

You can bench test the seat lumbar bladders for any leaks after the pumps are proven to be working.

If you need to remove the air tubes from the pump, take care as
the pump nipples are quite brittle from aging. Use an X-acto knife
to precisely cut the tubes. There is sufficient (surplus) tubing to cut out any defective tubing.