s600 loss power ...
02-26-2015, 08:45 AM
#1
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s600
s600 loss power ...
Hi
Just bought the car 1 month before it was driving great now big loss of power the engine sound louder on 1 and 2 gear the sound like after 2800rpm only when driving when its stop its look perfect
I take it to 2 garages
First one say its coil pack second one say coils are perfect its just plugs
and the third one say its the controler the one under the mersedes logo
I checked my coils the left on seems already changed any idea please help
The first mechanic check it on computer he told me misfire on 7 8 9 cylinder i read it . It says cylinder 7 8 9 failure and he say also the right side of o2 have problem to be honest he looks that he just didn't understand what he read the....
Just bought the car 1 month before it was driving great now big loss of power the engine sound louder on 1 and 2 gear the sound like after 2800rpm only when driving when its stop its look perfect
I take it to 2 garages
First one say its coil pack second one say coils are perfect its just plugs
and the third one say its the controler the one under the mersedes logo
I checked my coils the left on seems already changed any idea please help
The first mechanic check it on computer he told me misfire on 7 8 9 cylinder i read it . It says cylinder 7 8 9 failure and he say also the right side of o2 have problem to be honest he looks that he just didn't understand what he read the....
Last edited by sandofik88; 02-26-2015 at 08:53 AM.
02-26-2015, 01:24 PM
#2
MBWorld Fanatic!
Lots of questions first:
What year is the car?
How much service history is there?
What evidence have you got of any work that has already been done?
What is "the controller"? Is it the ignition power supply in the middle of the V at the front?
When were the plugs last replaced?
What are the part numbers of the left and right coil packs?
Plugs are cheaper than coils, so maybe change the plugs first?
Its not an uncommon problem unfortunately.
Nick
What year is the car?
How much service history is there?
What evidence have you got of any work that has already been done?
What is "the controller"? Is it the ignition power supply in the middle of the V at the front?
When were the plugs last replaced?
What are the part numbers of the left and right coil packs?
Plugs are cheaper than coils, so maybe change the plugs first?
Its not an uncommon problem unfortunately.
Nick
02-26-2015, 01:34 PM
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Lots of questions first:
What year is the car?
How much service history is there?
What evidence have you got of any work that has already been done?
What is "the controller"? Is it the ignition power supply in the middle of the V at the front?
When were the plugs last replaced?
What are the part numbers of the left and right coil packs?
Plugs are cheaper than coils, so maybe change the plugs first?
Its not an uncommon problem unfortunately.
Nick
What year is the car?
How much service history is there?
What evidence have you got of any work that has already been done?
What is "the controller"? Is it the ignition power supply in the middle of the V at the front?
When were the plugs last replaced?
What are the part numbers of the left and right coil packs?
Plugs are cheaper than coils, so maybe change the plugs first?
Its not an uncommon problem unfortunately.
Nick
02-26-2015, 03:59 PM
#4
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Join Date: Sep 2012
Location: Montreal, Quebec
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2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
cyl 7,8,9 are also controlled by one solenoid for de-activation, and 10, 11, 12 by another solenoid. The harness connections are on the left bank top of the valve cover.
Complex stuff, but if you want to change the plugs, you first have to remove the O2 sensor connector heat shield BELOW the coil pack, and then remove the coil pack (be VERY careful with torking these bolts, as the go into the aluminium heads)
Then you get to the plugs, but remove and inspect each and everyone of the red silicone rubber plug inserts in the metal tubes (MB says replacement mandatory at each removal. If there are any arching tracks, the coil pack is probably in trouble.
You can search on our forums (hoaz129) for more details on coil packs.
good luck!
Complex stuff, but if you want to change the plugs, you first have to remove the O2 sensor connector heat shield BELOW the coil pack, and then remove the coil pack (be VERY careful with torking these bolts, as the go into the aluminium heads)
Then you get to the plugs, but remove and inspect each and everyone of the red silicone rubber plug inserts in the metal tubes (MB says replacement mandatory at each removal. If there are any arching tracks, the coil pack is probably in trouble.
You can search on our forums (hoaz129) for more details on coil packs.
good luck!
Last edited by kraut56; 02-26-2015 at 04:03 PM.
