[Bill UK]

Lots of info in the links below but nothing positive, as your problem started with the temp sender unit I still think the ECU is receiving the wrong info or needs more time to settle down. Some mention of an idle adjusting screw but the forum thread comes to a dead end.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&Page=106

http://www.toyota-supra.info/forums/showthread.php?t=1840&highlight=idle



http://82.110.105.76/mkiiisupra.net/bbs/showthread.php?t=14545&highlight=idle



http://www.supramania.com/forums/showthread.php?t=33501&highlight=idle