Question about Mercedes-Benz Cars & Trucks
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Posted on Jan 02, 2017
SOURCE: lurching at low speed take off
I would start by cleaning the inside of the Mass Air Flow sensor, dirt gets on the sensor element from the air going through and causes these kinds of problems, a company called CRC makes the spray cleaner for MAF's, any good auto parts store will have it, the MAF is located in the air intake hose to the engine. Another thing to check is the throttle valve and air bypass idle speed control valve for sludge, use the following procedure I have written to perform this.
Here is the most common cause of surges and stalls and low idle, 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 Dec 04, 2008
SOURCE: engine won't idle,
ok code 32 is the EGR (exhaust gas recirculation) this does not mean that the EGR valve is bad right off, check it and see if it is stuck in the open position, remove the vacuum line see if it moves, it should not. It is supposed to open at highway speed to recirculate exhaust gases and burn them, if the valve is stuck open the engine will not idle because it upsets the air mixture too much, if you remove the valve and see its open, then replace it.
Posted on Apr 07, 2009
I have this problem also. A diagnostic has told me its a MAF sensor problem which I have replaced, however this has caused other problems! I've read that a stuck PCV valve can cause loss of power and is quite a common problem if the car hasn't been well serviced and looked after, and cheap to replace so its worth a shot. Of cause loss of power can be caused by many things so more detail would be needed.
Posted on Dec 03, 2009
It could be a fuel issue add some heat in the tank water can be picked up easily when refueling could also be an injector issue
Posted on Aug 27, 2012
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