Subject	Code 21 ISC
Posted by	KY Z MAN on March 13, 2018 at 12:46 AM
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Message	I have owned the car for two an a half years, first twenty four months ran great. then code 21 popped up have tried everything I know. New PTU an harness, checked both left an right grounds at firewall, car has new CAS injectors a seals, coil packs are perfect an even put a good working ECCU from Joel at Z1. Oh and soldered the six wires in front of timing belt cover, on that harness. But still car starts runs for 20 mins Quits an even when you reset the eccu an get a code 55 car must sit about an hour, then SOS. Joel said Yugo Bernie on this site would probably be able to give some insight. But all are Welcome to Reply joel just said Bernie was one of the best. His words not mine LOL.
Follow Ups	Code 21 ISC - KY Z MAN 00:46:41 03/13/18 Sounds as if you looked at all the right things. Give this - jzack 09:50:26 03/13/18 Re: Sounds as if you looked at all the right things. Give this - KY Z MAN 13:57:41 03/13/18 Generally not easy to fry. One cause can be failure to - jzack 14:13:07 03/13/18 Re: Generally not easy to fry. One cause can be failure to - KY Z MAN 14:49:41 03/13/18 The sitting 1 hour is also a good clue - leads me to believe - jzack 18:07:40 03/13/18 But it's positive pressure pump in the tank system - compirate 20:28:35 03/13/18 Lol, very easy. The tank has a vapor return line. - jzack 22:13:11 03/13/18 BTW - another way to test. Leave gas cap tight, idle car - jzack 22:26:21 03/13/18 Re: BTW - another way to test. Leave gas cap tight, idle car - KY Z MAN 23:17:44 03/13/18 Re: BTW - another way to test. Leave gas cap tight, idle car - KY Z MAN 01:15:23 03/14/18 But not technically vapor lock, more a vacuum lock, - compirate 01:00:25 03/14/18 Yep, agreed. (n/m) - jzack 00:31:34 03/15/18 Re: Lol, very easy. The tank has a vapor return line. - KY Z MAN 21:52:14 03/14/18 Re: Generally not easy to fry. One cause can be failure to - KY Z MAN 14:56:52 03/13/18 Re: Sounds as if you looked at all the right things. Give this - KY Z MAN 21:58:20 03/14/18
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