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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952. |
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K Last edited by Pete Geither; 07-17-2007 at 10:55 AM. |
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The test is to put a BB in the vac line between the egr element port and the SOV and run the car for a few days. No surge = you have narrowed down the cause. I also do a manual egr test and part of that test is to make sure the egr SNAPS shut. As the problem came with EGR change, it also possible that you have a simple vac leak anywhere in between the egr and the intake at the engine ..this could be as simple as the mount bolts/gasket at the intake side or a loose fitting of the cross tube from the valve.. Last edited by Arthur Dalton; 07-17-2007 at 02:47 PM. |
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The idle surge problem with my C280 was caused by the purge valve/regeneration valve. Every time the code was tripped for it, I would clean it out with some WD40, as per Arthur's method. I finally got tired of doing that all the time and I just bought a new valve Instant cure. Your E320 has the same M104 engine so it might be worth looking at. To test the purge valve just hold it in your hand while the car is running. You should feel it pulsing, like a heartbeat. If it isn't pulsing, it ain't working. It takes all of 3 minutes to replace, no tools required.
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Jonathan 2011 Mazda2 2000 E320 4Matic Wagon 1994 C280 (retired) |
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I was just out checking on the car and they told me "it's fixed". Said I had 2 bad vaccum hoses under the car some where. I hope to get more specifics when I pick the car up. Great news though.
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
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Paul S. 2001 E430, Bourdeaux Red, Oyster interior. 79,200 miles. 1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron". |
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#8
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1994 C280, dark green metallic 105k miles 1991 190E 2.6, Black 191,500 miles (sold to another forum member) 2003 Chevy Tahoe LT, Redfire Metallic 105k miles 1989 Mustang GT Cobra Convertible 43k miles |
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http://catalog.peachparts.com/ShopByVehicle.epc?q=1994-MERCEDES--BENZ-C--80&yearid=1994%40%401994&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6333%3AMBC|1556%3AED|10000015%40%40C280&mode=SS&yearid=1994%40%401994&makeid=63%40%40MERCEDES+BENZ%40%40X&modelid=6333%3AMBC|1556%3AED|10000015%40%40C280
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Jonathan 2011 Mazda2 2000 E320 4Matic Wagon 1994 C280 (retired) |
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1994 C280, dark green metallic 105k miles 1991 190E 2.6, Black 191,500 miles (sold to another forum member) 2003 Chevy Tahoe LT, Redfire Metallic 105k miles 1989 Mustang GT Cobra Convertible 43k miles |
#11
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If running WD40 thru the valve and lines does not clean it up , I have a good technique for stubborn ones with stuck pintles
The main part that hangs up is the pintle pin from the solinoid ...so, you take the valve off the car and squirt BP Blaster or carb cleaner into the valve and leave it over-night UPSIDE DOWN... that gets into the pintle pin and frees it up. The trick is the next day, you hook 12V battery power to one terminal and touch the other very rapidly ON/OFF..that exercises the pintle pin and frees it up.. some tapping on the side helps.....you will know when it is free b/c you wll hear/feel it clicking. You then blow air thru the vavle ports in the direction of the arrow. When you can feel it pulse and you can blow thru it only in the direction of the arrow, you are done and it can be installed on the car w/arrow facing engine flow. Then idle until up to temp and feel it in your hand , ..you should feel the pulses [ 5-20Htz]. You may also want to take an Om reading across the sol. terminals before cleaning to be sure the coil is good.,, you are looking for 40-50 Ohms.....if no , don't bother..
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A Dalton Last edited by Arthur Dalton; 08-07-2009 at 02:50 PM. |
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1994 C280, dark green metallic 105k miles 1991 190E 2.6, Black 191,500 miles (sold to another forum member) 2003 Chevy Tahoe LT, Redfire Metallic 105k miles 1989 Mustang GT Cobra Convertible 43k miles |
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