Question about Cars & Trucks
I have a 1998 she 230 Mercedes the car runs fine and quiet wow it is sitting idle but when I put it in gear it vibrates pretty hard but runs normal what is that?
To me it sounds like the mas wheel needs changing. acts like a clutch they do wear out and cause this fault. if it is the manual gear box type it can be the clutch spring weak in the clutch and this would need to be changed. some time its just come out of in liniment and will come back over time but you should have it checked. you need to take the inspection cover off and shine a light in side and have a look.
Posted on Nov 25, 2013
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Posted on Jan 02, 2017
SOURCE: rough idle
Have you had the throttle valve cleaned?
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
Posted on Nov 12, 2008
The problem is the torque converter solenoid. I had it happen on my 94 Cavalier a few years back and was a cheap fix at the local car mechanic. What happens is the transmission warms up and hits a certain speed where the solenoid engages, but then it sticks and won't disengage until it cools down sufficiently. When it sticks, it causes the car to shake when slowing down and will snub out the engine if you come to a stop.
Posted on Mar 25, 2009
hi this sounds like it might be the MAF sensor may be on its way out, just looking through my technical data the only thing that would make it run this bad would be the MAF, what you will have to do is disconnect the sensor and then see if it idles better, if so then you will need to get this changed out for new one...hope this helps
Posted on May 29, 2010
mcdevito75 here, A vibration while idleing is not really normal, a rough idle could be many things, wrong octane gas, dirty gas filter, dirty smog controls. Have your local shop take a look for you.
Posted on Jul 13, 2010
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Engine stalls or RPM
fluctuates at idle up and down or dies near idle.
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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