Thread: 1992 124 Mercedes 300D 2.5 Turbo shakes at idle after about 20 minutes of driving
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  #10  
Old 06-06-2014, 07:41 AM
TimFreeh TimFreeh is offline
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Join Date: Aug 2001
Location: Milford, DE
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I guess I'm confused...... doesn't the last sentence of post #8 directly contradict the first sentence of post #9?

The OVP feeds power to the ELR circuit that provides engine speed idle control, when the ELR isn't operating the engine idle speed will fall to approximately 600RPM and it will noticeably shake. You may have needed motor mounts but I'm guessing that by-passing the OVP to enable the ELR to operate independently of the normal OVP relay was a bigger portion of the fix.
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