CLK 430 Idle
03-21-2002, 09:13 PM
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CLK 430 Idle
My 01 430 has an occassional rough idle when in park with a/c off at operating temp. If car is in gear and or if the ac is on the idle is much better. My dealer has checked for codes and found none and has told me that the 99+ v8's have this quality due to a very lean idle and when the car is in gear or with ac on the mixture becomes richer and therefore improves the idle.
I would appreciate the MB Tech's feedback and others as I don't recall this problem on the other CLK's I've owned and although the explanation seems logical the problem just does not seem right.
Thanks
RJC
I would appreciate the MB Tech's feedback and others as I don't recall this problem on the other CLK's I've owned and although the explanation seems logical the problem just does not seem right.
Thanks
RJC
03-21-2002, 10:07 PM
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Re: Question
Originally posted by darkLCD
Does this occur when your engine is cold or also when your engine is warmed up? Do you have any mods such as a K&N or exhaust?
Does this occur when your engine is cold or also when your engine is warmed up? Do you have any mods such as a K&N or exhaust?
03-22-2002, 10:07 AM
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Originally posted by darkLCD
Has your tech tried resetting the idle speed?
Has your tech tried resetting the idle speed?
03-23-2002, 11:30 AM
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Originally posted by darkLCD
Ask them to check your Mass Airflow Sensor just to rule that out.
Ask them to check your Mass Airflow Sensor just to rule that out.
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03-23-2002, 02:02 PM
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2001 E55
I have a 97 E420 that does exactly the same thing, quite pronounced at times to the point that I have to make sure to keep my foot on the brake at a light so I don't surge too far forward. I have a K&N filter but the car did the same prior, I have been to the dealer over 1/2 dozen times on this since new and here is what we've done.
1. Replaced vacuum line
2. Replaced smog sensor
3. Istalled fuel filter
4. Reset Idle speed
5. Replace A/C system complete
6. Keep the car overnight and do absoloutely nothing but tell me the next day it is fixed.
I love the car but it is apparently going to be a trait one lives with, if you get yours fixed, please post the cure so I can try that.
I recently read an article in one of the car mags about the E class and buying a lease return, they mentioned the things that plague these cars but not this one so maybe it's just us. By the way, I had ALL the other bugs in the article too!
1. Replaced vacuum line
2. Replaced smog sensor
3. Istalled fuel filter
4. Reset Idle speed
5. Replace A/C system complete
6. Keep the car overnight and do absoloutely nothing but tell me the next day it is fixed.
I love the car but it is apparently going to be a trait one lives with, if you get yours fixed, please post the cure so I can try that.
I recently read an article in one of the car mags about the E class and buying a lease return, they mentioned the things that plague these cars but not this one so maybe it's just us. By the way, I had ALL the other bugs in the article too!
03-23-2002, 07:37 PM
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Originally posted by mrbeverlyhills
I have a 97 E420 that does exactly the same thing, quite pronounced at times to the point that I have to make sure to keep my foot on the brake at a light so I don't surge too far forward. I have a K&N filter but the car did the same prior, I have been to the dealer over 1/2 dozen times on this since new and here is what we've done.
1. Replaced vacuum line
2. Replaced smog sensor
3. Istalled fuel filter
4. Reset Idle speed
5. Replace A/C system complete
6. Keep the car overnight and do absoloutely nothing but tell me the next day it is fixed.
I love the car but it is apparently going to be a trait one lives with, if you get yours fixed, please post the cure so I can try that.
I recently read an article in one of the car mags about the E class and buying a lease return, they mentioned the things that plague these cars but not this one so maybe it's just us. By the way, I had ALL the other bugs in the article too!
I have a 97 E420 that does exactly the same thing, quite pronounced at times to the point that I have to make sure to keep my foot on the brake at a light so I don't surge too far forward. I have a K&N filter but the car did the same prior, I have been to the dealer over 1/2 dozen times on this since new and here is what we've done.
1. Replaced vacuum line
2. Replaced smog sensor
3. Istalled fuel filter
4. Reset Idle speed
5. Replace A/C system complete
6. Keep the car overnight and do absoloutely nothing but tell me the next day it is fixed.
I love the car but it is apparently going to be a trait one lives with, if you get yours fixed, please post the cure so I can try that.
I recently read an article in one of the car mags about the E class and buying a lease return, they mentioned the things that plague these cars but not this one so maybe it's just us. By the way, I had ALL the other bugs in the article too!
Last edited by RJC; 03-23-2002 at 09:08 PM.
03-24-2002, 11:47 AM
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Originally posted by darkLCD
RJC,
Have the techs tried cleaning/replacing the fuel injectors? Also, have the techs replaced or at the minimum checked your spark plugs?
RJC,
Have the techs tried cleaning/replacing the fuel injectors? Also, have the techs replaced or at the minimum checked your spark plugs?
Thanks
RJC
03-26-2002, 12:27 AM
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1997 Toyota Tacoma 4x4
It's probably a software problem. I believe there's an updated ME control unit for the rough idle problem. Also, I've seen rough idle complaints on C240/320 and S430 models due to moisture in the crankshaft position sensor connector, but I don't think it applies to the CLK. Could be wrong though.
03-26-2002, 01:04 PM
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Originally posted by mbtech208
It's probably a software problem. I believe there's an updated ME control unit for the rough idle problem. Also, I've seen rough idle complaints on C240/320 and S430 models due to moisture in the crankshaft position sensor connector, but I don't think it applies to the CLK. Could be wrong though.
It's probably a software problem. I believe there's an updated ME control unit for the rough idle problem. Also, I've seen rough idle complaints on C240/320 and S430 models due to moisture in the crankshaft position sensor connector, but I don't think it applies to the CLK. Could be wrong though.
Do you know if the me control includes 01's?
RJC
03-27-2002, 05:42 PM
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CLK 320 Avantgarde
MBtech208
I have a similar problem on a CLK320, would I need a software upgrade, or is there something else that I'd need to check?
Many Thanks
Nick
Many Thanks
Nick
