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  #1  
Old 12-10-2005, 03:04 PM
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Join Date: Sep 2001
Location: Former New Jersey resident, transplanted to Atlanta
Posts: 465
Misfire, check engine light on M104, W210

I have a 1997 E320 that suddenly developed a misfire and the check engine light came on.....About a year ago I replaced the spark plug connectors and plugs. Is it possible that the plug connectors are bad already? I've read on this forum that they are a very common problem on W210s. Is there a way to take an ohm reading on the coil-packs to see if they are good or not?....I'm going to Autozone to get the codes scanned.......btw, what's the best spark plug (from you guys experience) for the M104 engine?...Is it true that when the ECM detects a misfire it shutsdown the associated injector?

Thank you in advance.

ps, I've seen M104/W210 repair cds advertised on ebay.......Are they legitimate???.......Mercedes sure have changed a lot since my old 123 and 124 chassis.......You'd think that repair information would be available for a 1997 by now, huh?

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Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.
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  #2  
Old 12-10-2005, 03:16 PM
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Join Date: Apr 2002
Posts: 139
how's the wiring harness?
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g-wagen
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  #3  
Old 12-10-2005, 03:49 PM
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Join Date: Sep 2001
Location: Former New Jersey resident, transplanted to Atlanta
Posts: 465
how's the wiring harness?

It was replaced in 2004.
__________________
Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.
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  #4  
Old 12-10-2005, 04:26 PM
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
<>

Bosch Super Coppers F8DC4... No others
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  #5  
Old 12-11-2005, 03:56 PM
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Join Date: Sep 2001
Location: Former New Jersey resident, transplanted to Atlanta
Posts: 465
Autozone scanned codes

P306 - Cylinder 6 misfire
P301 - Cylinder 1 misfire
P300 Random misfire

Is it safe to assume that because cylinders #6 and #1 fire off of the same coil, that the coil is defective?????? OR should I first replace the spark plug connectors.....ps, installed F8DC4 Copper plugs - no change

Thanks in advance
__________________
Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.
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  #6  
Old 12-11-2005, 04:15 PM
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Quote:
Originally Posted by Bigdaddybenz
P306 - Cylinder 6 misfire
P301 - Cylinder 1 misfire
P300 Random misfire
Is it safe to assume that because cylinders #6 and #1 fire off of the same coil, that the coil is defective??????
For $ 65.00 ( from FastLane ), I'd try it.
If all else fails you will have a spare.
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2007 C 230 Sport.
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  #7  
Old 12-11-2005, 08:05 PM
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Quote:
Originally Posted by Bigdaddybenz
P306 - Cylinder 6 misfire
P301 - Cylinder 1 misfire
P300 Random misfire

Is it safe to assume that because cylinders #6 and #1 fire off of the same coil, that the coil is defective?????? OR should I first replace the spark plug connectors.....ps, installed F8DC4 Copper plugs - no change

Thanks in advance

Swap coils , clear codes , and then see if codes follow coil ..
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  #8  
Old 12-24-2005, 09:12 AM
Registered User
 
Join Date: Sep 2001
Location: Former New Jersey resident, transplanted to Atlanta
Posts: 465
Thanks fellas! Copped a Bosch coil from an Ebay store for 50 bucks and the car is running great!.....Also purchased a great new scanner off of ebay for 80 bucks! Many thank yous!

Happy Holidays!

__________________
Currently Driving
2006 E320 CDI
1999 E300 Turbo Diesl
2002 ML500
1995 E320 Station Wagon


MBs I've owned
1997 E320 Assassinated by Pine Tree
1987 300E Wife Killed Engine
1981 300D Stretch Limo Total Loss
1970 250 Coupe 212,000 mi.
1974 450sel 184,000 mi.
1974 240D 377,000 mi.
1977 300D 204, 000 mi.
1979 280se God Only Knows!
1983 240D 130,000 mi.
1972 220D 280,000 mi.
1983 300SD 244,000 mi.
Reply With Quote
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