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  #1  
Old 03-25-2002, 01:47 AM
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Question Two Different Codes On My 94 E320

MY CHECK ENGINE LIGHT CAME ON THE OTHER DAY AND I PRESSED THE BUTTON BY THE LITTLE LED UNDER THE HOOD AND THE LED BLINKED 5 TIMES WHICH IM TOLD IS EGR.. OK .. WHEN I PRESSED IT AGAIN THE LIGHT BLINKED FOUR TIMES..(AIR INJECTION??)).. THE NEXT TIME IT BLINKED 5, THEN 4 AGAIN.. IS THIS THE NORMAL WAY FOR THE SYSTEM TO DISPLAY MULTIPLE CODES OR DO I HAVE A PROBLEM?? ALSO,, IF THE CODE 4 IM SEEING IS REAL.. WHAT MIGHT NEED TO BE DONE TO FIX IT?? ANY HELP WOULD BE GREATLY APRECIATED/// THANKS
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Old 03-25-2002, 08:15 AM
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The EGR code is more than likely indicating that you have a plugged line from the EGR valve to the intake manifold. Do a search and there are instructions for testing and resolving it. It is a diyer job.
Not too sure about the 4 blink code.
Yes, that is the way it works.
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Old 03-25-2002, 08:38 AM
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CAPS LOCK Please....

Code #4 is Air Injection and I suspect that you have a bad vac. hose connection between the intake and the switch-over valves.
Take the front, top cover off [ in front of valve cover] and trace the hose where it passes the front of the engine.. Both the egr and air pump SOVs are fed vac from a common line. If this leaks/cracked, etc, both codes will display.
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Old 03-25-2002, 08:49 AM
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In the UK- and I guess much of Europe we don't get these diagnostic codes. They seem seriously useful.

Can the diagnostic plug be retro-fitted to Euro-Spec cars? Anyone Know?
Or is it a new ECU and who knows what else?
Thanks


Barry
W124 E200 Wagon 108,000 miles
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  #5  
Old 03-27-2002, 01:57 AM
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Thumbs up thanks

thank you for your excellent advice// i removed the cover on the front of my engine and found one small plastic vacume line disconnected.. pluged it back in and reset the codes.. hope they stay gone! benjay
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Old 03-27-2002, 02:50 AM
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Bazzman,
Are you near Frimley??
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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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Old 03-27-2002, 05:04 AM
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David

Not far, about 20 miles.
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Old 03-27-2002, 10:27 AM
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Re: thanks

Quote:
Originally posted by benjay
thank you for your excellent advice// i removed the cover on the front of my engine and found one small plastic vacume line disconnected.. pluged it back in and reset the codes.. hope they stay gone! benjay
Good.
Thanks for posting your findings and also for hitting the caps lock.....
Arthur
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