ONCE AGAIN I STATE THAT I HAVE THIS 1993 400 SEL WHICH RUNS GREAT BUT THE LAST TWO MONTHS I'VE BEEN HAVING SOME NOISE OR WHEN THE CLUTH ENGAGES ON THE AIR INJECTION PUMP UPON STARTING CAUSING THE CAR AT TIMES TWO STALL IMMEDIATELY AFTER STARTING. AT TIMES THE CAR WILL IDLE FOR A MINUTE OR TWO BEFORE THE CLUTCH DESSENGAGES ON THE PUMP AND THEN ALL IS WELL - IT IMMEDIATELY IDLES FINE AFER THIS NOISE STOP. IT ONLY HAPENS WHEN THE CAR IS COLD. DOES ANYONE KNOW WHY?

I NEED SOMEONE WITH EXPERIENCE AND THE KNOWLEDGE TO REPLY TO THIS PROBLEM.