Raddady

03 CL S 6M just updated 0:00 clock w/disk from Acura. Worked well. 2 weeks ltr I changed plugs, oil, cleaned top Man intake of oil & carbon deposits. Was driving @ high RPMs through gears ( 3rd @3800 RPM) when NAV screen went blank. Checked dvd disk, eject/insert but blank, no lights screen! Found through trial & error screen/unit worked with ignition turned on w/o starting but went blank ASAP when engine started. No lights or anything on screen. Turn car off & back on (not started) & nothing. When I wait 5 minutes & again turn ignition to on (not started) Nav functions normally until engine is started, DEAD ASAP! Seems like letting it cool resets NAV but nada when engine started. Is there some heat sensor that would cause the Nav to shut down? Kinda bites as it has all the manual controls for heater & vents. Anyone clues on this? Thanks