> Seems like you may have a bad heater core(restriction or partial > blockage),since this is part of the cooling system(and most likely > orignal) I believe it is original. As I understand it, the heater core runns hot coolant through a maze of pipes not unlike that of a radiator, which in turn heats the air blowing from the fresh air vents into the cabin when the A/C mode switch is set to "Heater", right? > it just might be causing a blockage in your cooling > systen...not enough to cause problems on cool days...but on the > really hot days,it may be slowing down the flow of coolant thru the > system,(if there is a blockage or restriction) if possible try > disconnecting the heater core(by putting a by pass tube)and if > everything seems fine then you know that is your problem. Would this involve taking apart the dash as well? I'm certainly willing to give it a try. Also, how would I know if I'm getting proper flow through the cooling system? Is there any way to actually check that? Some place I can mount a gauge or visually inspect or whatnot? What is the proper flow? > If you > cannot do that,then run the heater fan at full speed to see if the > Temperature drops(a good idea to do on any Delorean that starts to > overheat)If the Temp drops to normal or close to normal,then you know > for sure that is your problem. Next time it happens I'll give it a go. The soonest I'll be able to try taking anything apart is this coming weekend, but I might get to try the heater thing today or tomorrow, should he car start to overheat again. > PS...heater cores on a Delorean require you to basically take your > dash/interior.passanger seat/carpet,console etc, all apart to > replace...A.P.I.T.A. to replace. Hopefully it's not the heater core then. :) I have been meaning to learn how to do take all that stuff apart, though. It'll give me a chance to clean out that evaporator box, close up any leaks in the vents, replace any bad vacuum lines, and whatever else I can think of while I'm in there. Thanks! -- Joe ------------------------------------ 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: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto: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/