trouble code 21 need some help

[ullose240sx]

yea i now its says ignition signal missing in primary coil but can some one tell me how to fix this ive replaced all relays and the coil plugs and plug wires, and the distributer cap the engine has only 38,676 original miles on it any help would be appreciated thanx mathew

[ullose240sx]

sorry its a 1990 nissan 240sx

[ullose240sx]

well i called the nissan dealer they told me it was the power transitor underneath the coil so i took it off they also said a new one was 130 plus tax just for a one inch piece of plastic, does anyone here have a spare one they could sell me?

[junk240sx]

Did you get this fixed? Was it the power transister unit? My car is throwing error 21 also. Car runs fine except for slight hesitation and rough idle.

I was wondering if this fixed your problem or not before making a purchase.

[tiger]

yeah i want to know also