The potting compound on these modules was another very poor choice, as it flows at high temperature. Modules of later manufacture have a better potting compound which stays in the foam state. However, the running goop does no harm, so long as it doesn't interfere mechanically with the throttle valve operation, and even then it is fairly easy to get out of there. There is no effect on the boards of having the stuff run off, there is still enough residual to keep the components from vibrating; I have used such modules without regard to the state of the potting compound, without any problems showing up. I don't think moisture resistance was a factor (although I admit I live in the Desert, so perhaps there is a condensation problem in other locations - I rather doubt it though). I didn't respond to your question about the timing having shifted far enough to prevent a hot restart - but as you suspected, I don't think there is any reasonable scenario that would produce that amount of shift. With your detailed testing, you have now eliminated all possible causes. Therefore, either what you say is happening isn't happening (you're having hallucinations), or else somehow you've missed something. I've been in that state many times, and my method is to start over with the most likely causes in mind. For your symptom (and I think you've tried all of these, but humor me and let's double check), I'd do the following: Next time it won't restart, loosen the wingnut in the center of the air cleaner lid and decant 2 ounces of fresh, nicely scented and colored gasoline into the depression (a raised pinky during this operation has been shown to set the right mood, this is an IMPERIAL, after all!). Let it run down the screw threads into the throttle body, then quickly retighten the wing nut, trot around to the driver's seat with alacrity, and try to restart the car now - don't touch the accelerator, just twist the key. If it starts, we'll start looking for cardiac insufficiency in the fuel system. If it doesn't, we'll need to put a scope on the (-) terminal of the coil and watch the square wave. If the primary drive looks normal, then I question the condition of the engine - specifically, have you done a compression check? How many miles on this puppy? Let me know what you find out, please. Dick Benjamin -----Original Message----- From: Ken W Stephenson [mailto:kss37215@xxxxxxxx] Sent: Tuesday, July 26, 2005 9:50 PM To: dickb@xxxxxxxxx Subject: Non-Nuclear Meltdowned Modules Hi Dick, We have accumulated several EFI modules in various states of potting compound meltdown. If these operate in the system, can we use them as is, or must we clean them up and repot them? If so, with what? Assume they were originally potted for moisture resistance? Meanwhile, still analyzing our shutdown/no hot restart mystery. Regards, Ken --- [This E-mail scanned for viruses by Declude Virus] --- [This E-mail scanned for viruses by Declude Virus] ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm