MOST of the CIS-E cars used 2 pumps due to high fuel pressures & the demand that caused early single pump failures.

The sedans of that era also had 2 pumps.

About the only car that used 1 was the 1988-91 300SE(L)'s & they were very noisy!

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator