89' 740 GLE 16v Idle Problems
 

The car runs great, starts fine, it will idle high at first when started but then settle down, However the problem is when its hot out, in drive it will idle really low, at stop lights etc. it has died on me a few times if I forget to keep my foot on the gas a little. In the morning however or when its cold it outside it does just fine, Any ideas?

Welcome....

It might be a bad or going bad ECT?

Wait for the experts to get online.....
in the meantime, check this site, good info: http://www.vcoa.org/700-900-faq/FAQSummary1.html

Try cleaning the throttle body and idle motor.
I had 3 16V cars with almost the exact problem last week and cleaning the throttle body and idle motor fixed it.