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#1
10-16-2004, 09:43 PM
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95 C280 Rough Idle
Hello: Had oil leak repaired at 65k front engine gasket as well as valve..5 mins after I got the car back it idle rough (didn't happen before)..drove right back..20 mins later..was running fine: reason from mech that maybe one of the ignition coil is going bad..anyhow, 3 days later..now same thing.. CEL not on..replaced plugs..been doing a lot of reading..thanks in advance for any help....
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#2
10-16-2004, 09:54 PM
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For starters , change the 3 plug connectors under each coil and see how it does ...cheap
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#3
10-16-2004, 10:02 PM
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Good advice Arthur. We will often change them when we change plugs for two reasons. The first is we get blamed when the POSs can't take the physical handling of removal to access plugs (or head gaskets). Second when they are working there ain't snowballs chance in H of diagnosing them so you are doubly screwed. The shop gets blamed for causing the problem and then gets blamed for being stupid when they can't ID the non existing problem when it comes back, working for the moment.
__________________
Steve Brotherton Continental Imports Gainesville FL Bosch Master, ASE Master, L1 33 years MB technician
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#5
10-16-2004, 10:11 PM
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SB
Yeah , I hear ya I tell everyone to just consider them auto change whenever doing plugs... or even touching them.. I like the BERU replacments.. Like you say.. this is one time that a part change as part of diagnosis wins the Race.... Wish I had a nickle for all the money guys spend on the big buck parts before they get to changing these.. that's why my post opens with "For Starters".....b/g
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#7
10-16-2004, 10:33 PM
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Here is another
http://catalog.eautopartscatalog.com/mercedesshop/sophio/quote.jsp?clientid=mercedesshop&cookieid=1A70KFNW8&baseurl=http://catalog.peachparts.com/&partner=mercedesshop&year=1995&product=F1010-84561&application=000357354 with all this info, now all you gotta do is find a way to get us over there to change 'em for ya ...............b/g............
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#8
10-16-2004, 11:26 PM
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rough
Never had any problem with my '97C280. 186,000 miles but I never have let a dealer work on the car because they usually come back with more problems. That said, I might suggest you buy a new gas cap as I once forgot to put mine back and expeienced a rouughness. With the new cap, car ran flawlessly. BTW why do so many MB's seem to leak oil? Mine never has and I would think the geniuses at the factory would figure this out. My 28 year old Chevy does'nt leak anything. What the deal?
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#11
10-18-2004, 01:56 PM
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WD and twist
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#12
10-18-2004, 09:16 PM
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I took it a part and discovered that the two part looked different..on close inspection: the original part was a 35 not a 36...installed it anyway and still has a rough idle..taking it to an independent tomorrow..they seem to think that one of the coils is bad..which one..they don't know..is there any difference between the 000 159 35 42 part number and the 36? Anyhow, this is getting beyond me now..thanks for all the help.....
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#13
10-19-2004, 05:25 PM
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Wiring Harness
found out that the harness is completely corroded and not giving the correct ground to the coils to fire correctly...they want $1010 for the harness..that doesn't sound right...what do you think..if not, where should I go?
thanks.....
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#14
10-19-2004, 05:39 PM
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....aaaaah, the dreaded wiring harness issue. All 1993-1995 engines are plagued by this.
You can check with Phil here at Fastlane, but the last pricing I heard on engine wiring harnesses was about $500-ish. A shop should charge 2.5 - 3.0 hours to replace it.
__________________
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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