Dear Martin, This is my last post on this subject, at least for now. I really gotta get back to the work.... My thoughts on this are developed over 20 years with an Engineering perspective. However, I find a common misconception among some DML readers and perhaps some non DML'ers as well. Often I get the sense that "Here's Bob Z the know it all Engineer who thinks we're all a bunch of idiots." Nothing could be further from the truth & reality. I am constantly in awe of a great many of you guys out there. I'm always blown away at shows when I have the chance to stake a meaningful dialog with you only to re-discover how the DeLorean attracts deep and pensive thinkers. In conversation I refer to many of you as "Rocket Scientists". Some of you ARE. Many of you could be. There is so much intensity to these cooling system discussions that's it's nearly impossible to address each issue point for point. I just can't right now. There is ONLY one reason I posted. I feel an obligation to dispel the potentially troublesome misinformation of running the fans continuously. Simply put, you're not taking the long view.... It seems like the solution, but it's not. You're dealing with the symptom and not the problem. As for 40Amp relays. More owners than you can imagine, have ratty contacts in their relay sockets. A great many owners are in danger of socket meltdowns and don't know it. The relay may be new and perfectly able to handle the load but the sockets may not be. This is why I am flat out against running the fans constantly with the stock setup. If nothing else, modifying the relay socket system is morally wrong. Morally ? Yes, life gets in the way. The car you loved must be sold to pay for your wedding .............. It's passed onto someone who will suffer trying to decode it. What if I'm right on this issue ? What if, after some time passes, this was not the way to go ? You would NOT have been the first owner to have passed the buck to another. The problem worsens in time. Running the fans constantly is now barely cutting it. To the best of my knowledge there isn't a single DeLorean Specialist Service center who thinks hot wiring the cooling system is any sort of a cooling solution. You want a cooler car ? Try changing the radiator. PJ Grady's got some nice ones. You are likely to see a big difference. Air in the system ? DMC Joe's bleeding system. Clean and straight forward. My mother could install it. As for cycling, I'm not going to negotiate this one. Stop it, and you're looking for long term trouble. Yes, cycling is spiky but it's the way it was designed and it works. You want softer cycling ? There's a product for that. A properly maintained cooling system will work just fine. Ask ANY long term ( 20 year ) owner. Ask an expert service center. Bob Zilla [Non-text portions of this message have been removed]