burnt out rotor arm on classic 900

[gregcotier]

I was taking my radiator out the other day to inspect it and flush it out and had to remove the distributor cap to do so.
I found the rotor arm was burnt through and crumbled in two when I touched it.
Does anyone have any idea why this might happen?
Greg

[MrMoonyMan]

Old age.

Have changed mine once or twice now and she has always run better for it.

Don't scrimp by just replacing the rotor arm, get a new distributor cap at the same time.

HTH

[Saabstudent]

Like Chris,
I have had to replace mine on ocassion.

Thought i was going to have to do it again, as for the lest little while the car has had a small misfire under high boost when warm. Was just the plugs in the end but i popped down to my local Saab garage (less than .5 miles from my house) and they wanted £17 for one! Elkparts saved the day (and sent me a free pen and hand warmer as well) and i got both dizzy cap and rotor arm for under a tenner IIRC.

G