Frequency valve. Check for loose connections, broken wire or anything like that. Last resort the valve could be stuck or open circuit. Very seldom is the ECU bad. John Hervey www.deloreanautoparts.com -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of gerenpreiss Sent: Friday, August 26, 2011 1:44 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Catalytic converter glows I had not run my Delo for 4 weeks. I usually run it every 2 weeks for 30 minutes. This time it took about 10 tries to get it running. It would start and run for few seconds then die. When it started to run, It run very rough. After 20 minutes the catalytic converter started to glow red. Does anybody have an idea what could be wrong? Gatis 5791 ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: dmcnews-digest@xxxxxxxxxxxxxxx dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/