Ok so is a 1990 740GLE yesterday the car doesn't wanna start I found out that fuel fuse was out I replaced it with a anew one the car did start but it immediately turn off and doesn's wanna start again the fuel pump relay its new, coil its fine spark plugs has 1 month what should I cheeck I know the check engine light was on, it was the code on slot 2: 221,321 and on slot 6 143 the car was running perfectly don't know what could be the problem any help would be appreciate it thanks in advance

 

hello, i looked and offer these possibilities...

2-2-1: Oxygen Sensor (check or replace)
3-2-1: Cold Start Valve (check or replace)
1-4-3: Knock Sensor (check or replace)

check these items out and see what you cme up with. good luck.