'96 E300D, sluggish performance, unstable idle, noise - PeachParts Mercedes-Benz Forum

pimpernell · #1 09-19-2019, 01:54 PM

The 96 E300D does have a clutch pulley. As for being sluggish, you might want to check the resonator flaps in the intake manifold to make sure that they are functioning correctly. Good luck!!!

E_S · #2 09-21-2019, 06:14 PM

Quote:

Originally Posted by pimpernell

The 96 E300D does have a clutch pulley. As for being sluggish, you might want to check the resonator flaps in the intake manifold to make sure that they are functioning correctly. Good luck!!!

I have the Bosch alternator, not the Valeo. When I check the part number for the Bosch pulley, it looks like a normal pulley - the clutch pulleys I find are all marked for Valeo and cost around $50 compared to $30 for the Bosch pulley. Do you know anything more about this?

pimpernell · #3 09-22-2019, 05:20 PM

Quote:

Originally Posted by E_S

I have the Bosch alternator, not the Valeo. When I check the part number for the Bosch pulley, it looks like a normal pulley - the clutch pulleys I find are all marked for Valeo and cost around $50 compared to $30 for the Bosch pulley. Do you know anything more about this?

There is a BIG difference in how the engine will idle without the proper clutch pulley installed.

The clutch pulley allows the alternator's heavy rotor to overrun, absorbing shock, each time the alternator cycles on and off (about 3 times per second). The result is smoother idle, no belt chirp, increased life of alternator, power steering pump, water pump, sepentine belt and automatic belt tensioner.