v8 metal thing with fins

[hoon1]

what is it on front left strut ?

[AirStrike]

Front left? If you mean passenger side its the ignition module.
AirStrike

[hoon1]

dose it fire the car up or what dose it do,dose it cotrol the last turn of the key?

[auc05l]

My understanding is it boosts the signal from the dizzy to your coil. Then again I'm not 100% on that one. They do quite often fail leaving you with no spark or and intermittant fault. The wires going to this module and the actual pins ans sockets in the plug can also give ya trouble.