Hello all, I haven't posted here very much but seek advice/wisdom from those who are most knowledgeable:
My problem is at start up in my 89 740 GL B230F , The problem is when I start it in cool weather it immediately idles fine. Unfortunately, when the atmosphere warms up, the engine stumbles a bit as if it needs fuel and the tach falls below idle and the check engine light goes on. After a few seconds of this, the engine ends up idling fine (if it just doesn't stall completely) and almost immediately the check engine light turns off ( sometimes I can hit the accelerator and the light will then turn off as well).............
I have checked for codes and all I get is that everything is fine including sensor check....I have replaced recently ( for other reasons) the FPR, rear fuel pump, distributor cap and rotor, have cleaned the throttle body

Any thoughts are appreciated
Thanks in advance