Please check this "throttle damper" and determine if you have it and whether it's properly functioning. If you have any doubts, block it fully open and drive the vehicle.

It is connected up alright. It wasn't when I got the car and drove it home. As I was working on the car trying to detail and fix the little things I noticed it not hooked up. As I recall it didn't do this at all though before I hooked the vacuum line feed up to it...but it's just a faint recall.

Well, first thing to do, is to disconnect the vacuum line to the valve and plug it. I really don't expect this to solve anything, but it needs to be ruled out. If the EGR valve is leaking all the time, the symptoms could be as described, but, it would need modulation from the vacuum source to start leaking and then stop at a later time.

I am definitely going to try blocking the egr vacuum pick-up, and see if this has a positive effect on this problem. I will give feed back when I find out what happens!

Just wanted to get back on this sudden power loss problem. Running the car with the erg valve disconnected solves the problem. Now, my question is do I need to replace the egr valve or not? If I got caught with it blocked would I be susceptible to a fine or violation for dirtying up the air?

2001 E320
I Had White Smoke After 2 Miles,the White Smoke Is No More Replace 2 EA Oxy SENSORS At The Rear Muffler The Small Cable 4 Wire Had A Short To Ground At A Clip To Hold The 6 In Plug In Wire Replace Both Sides At Rear Of Mufflers Use Tool From Auto Zone 1/2 Hr Diy Done. Best Price $105.00 Ea. ***************. Their Is Switch Circuit To Go From Air Injection Of The Exhaust To The Cat This Is Air Pressure For Cold Emission AFTER WARM UP.

ON 02-12-08 HAD WHITE SMOKE AT IDLE ON COLD ENGINE, REPLACE SPARK
PLUGS AND WIRES NOW HAVE NO WHITE SMOKE AND GOOD POWER PLUS FUEL MILEAGE

1984 300d turbo 147k
replace the fuel lift pump assembly on left side engine $150.00 diy
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