I have an 85 with alot of mods including a jim wolf ecu....when the engine is cold and i try to start it it will start and die..at least twice or three times...then it will start and run ruff for two min or so till it warms up...Do you think it just needs a lil tune up or what?? When its warm it runs great....idk please let me know what you think.

chts.... replaced it lately? if not it's most likely gone bad on you... (cylinder head temperature sensor) it's on the drivers side just behind the timing belt cover

common problem on the z31 man..

It cant be that much $$$$ but how hard is it to throw in??

PITA... it's somewhat behind the drivers side timing belt cover... you can get at it without removing the cover, but it does take some time and patience

http://img.photobucket.com/albums/v352/johnZboy/Long_Block_01_CHTS_labeled.jpg
http://img.photobucket.com/albums/v352/johnZboy/CHTS_and_Harness_labeled.jpg