Question about 2002 Mercedes-Benz C-Class
Have a c class c240 2002 engine has a rough idle it's getting worst, it's only when it's idleling, at normal speed engine seems to be running fine. Can someone advise? Thank you
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Have you O2 sensors checked out. I have blowen out 2 on the same bank, sounds like the same problem. Check engine light will stay on solid, blink for a while, solid. Surefire way to check is run your finger in the tailpipe after it is cooled down. If it is very black with soot, then it probably is the O2 sensor.
Posted on Mar 19, 2009
SOURCE: loosing power at cruising speed
have you had the transmission flushed? it seems to be caught in a limbo. where the calibration of the speedo and the transmission are not compatable. Now as wierd as that seems it happens usally like when going up a hill if you have a manual trans. and cruise locked in. it cant hold that speed and moves to a different speed if you dont down shift. Or perhaps your cruise control cable is slipping. is it vacume over mechanical? pop the hood and make sure all your hoses to cruise control are tight and no leaks.
Posted on Apr 04, 2009
Yes,check the fuel pressure & filter. There's about a million other things to cause this,so start simple. Ask again if this doesn't help.
Posted on Jun 21, 2009
SOURCE: misses fires and sputters
1 Inspect Distributor Cap and Rotor Kit Loose, Cracked or Worn Distributor Cap. 1 Inspect Wireset Worn or Damaged Spark Plug Wires. 2 Inspect Distributor Cap Loose, Cracked or Worn Distributor Cap 1 Inspect Condensor-Ignition Faulty Condensor-Ignition. 1 Inspect Timing Specification Incorrect Ignition Timing. 1 Inspect Timing Specification Incorrect Ignition Timing. 2 Inspect Spark Plug Fouled, Damaged, or Broken Spark Plug(s). 3 Inspect Distributor Worn, Damaged or Faulty Distributor.
Posted on Sep 06, 2009
Tips for a great answer:
Here is the common cause of surges, cold stalls, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours.
To correct this problem Buy a can of throttle valve cleaner (it is made by CRC) from the local auto parts store, NEVER USE CARB CLEANING SPRAY, IT DESTROYS THE ANTI-STICK TEFLON COATING, spray it into the air intake through the throttle body of the engine until you have used about half the can, you will need to hold the idle up while you do this, it will try to stall, after this shut the engine down and disconnect the Negative (-) battery cable for 5 minutes. The intake is now clean, if you continue to have the idle speed control problems you may need to seek the help of a professional.
Feb 13, 2012 | 1998 Chevrolet K1500
Jul 20, 2011 | Mazda 323 Cars & Trucks
Feb 17, 2011 | 2003 GMC Yukon XL
Feb 03, 2011 | 2001 Kia Sportage
Mar 23, 2009 | 1993 Toyota Tercel
Nov 26, 2008 | 2000 Ford Focus
Nov 23, 2008 | 1999 Ford Ranger SuperCab
Sep 07, 2008 | 1987 Toyota Pickup
Dec 30, 2016 | 2002 Mercedes-Benz C-Class
314 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: