Before my coolant leak I was having a problem with my newly acquired 96 missing before it warmed up consistent with this thread. I noticed it after I changed my dirty air filter and oil. Figure the air filter change probably increased the air flow. Maybe its just a coincidence. Would like to see what everyone finds.

The wires have been cut to the EGR but not capped.

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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory

Re: Cut EGR wires - Is your check engine light on? Also - rough running when the engine is cold is a classic symptom of the glow plugs or glow plug relay not doing their job - I believe the relay on this engine is designed to stay on for a few minutes after the car is running to help smooth out cold start ups.

The missing/hesitation I was experiencing was at highway speed, around 60-70 mph, the engine would hesitate and stutter. Startups and around town driving were unaffected, though milage suffered.

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Charlie

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'66 VW 1300 96K miles
'97 E300D 239K miles
'85 300D 203K miles (sold Sep 2012)

The check engine light comes on for the glow plugs but thats it. I have never had one miss because of glow plugs once started and running smoothly. I'm thinking its because the EGR is not being controlled. Ok, I guess I need to complete the EGR mods documented to properly resolve this issue

__________________
My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory