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Engine dies while idling - 300-Class Mercedes-Benz Cars & Trucks

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Pleast post if its petrol or diesel ,and model type

Posted on Aug 02, 2010

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Posted on Jan 02, 2017

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1992 mercury grand marquise dies after letting off of the accelerator


Is this engine equipped with an EGR valve? Might have carbon deposits blocking the passageway causing the stalling problem.

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1993 Chevy C1500 4.3L V6 TBI starts but dies at idle after warming up.


Low pressure from fuel pump, when the pump is cold the pressure increases, as it warms up the pressure drops (this happens in a pump that is going out) the normal pressure should be at 40 with the key on and engine not running, when started the pressure should stay around 36, any less it won't idle and may run as long as you hold the pedal down. The injectors are opened electronicaly, so as long as there is fuel flow the engine gets fuel to run.So check the fuel pump, soundslike you need a new one

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My car will start and idle fine sometime and sometime it dies and dies when put in gear


Engine stalls cold 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. If the above cleaning doesn't cure your issues you need to have the computer controlled automatic idle speed control system diagnosed and repaired by a dealer or electronic engine control repair shop.

Nov 06, 2012 | 1986 Ford Mustang

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1994 Oldsmobile Bravada dies at stoplights, just changed fuel pump/filter and egr valve.Appriciate any help. thanks


check for vacuum leaks. You can do this with a can of carb spray but please be careful as it is flammable! if the ignition wires are leaking and you hit them with carb spray you will start the engine on fire!

The safer alternative is to have the engine "smoked" for vacuum leaks. This is done with a smoker. Any place that is leaking you will see smoke.

A trained ear will also be able to hear a leak.

If no leaks are found try unplugging the MAF sensor. Is is in the air tube next to the air filter box. If performance improves try cleaning it with some MAF sensor cleaner. If that doesn't work than you may need to replace it.

Feb 08, 2012 | Cars & Trucks

1 Answer

CAR RUNS GREAT, STARTED DIEING WHEN A/C WAS TURNED ON, NOW A FEW DAYS LATER IT DIES EVEN WITHOUT A/C ON, RUNS BUT WILL NOT IDLE


CHECK IDLE SPEED SHOULD BE 650 - 850 RPM. IF IDLE TOO LOW AC WILL PUT DRAG SLOW DOWN ENGINE CAUSING ENGINE TO STALL IF IDLE SPEED IS TOO LOW.

Sep 09, 2011 | 2000 Mitsubishi Eclipse

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A 1985 Sentra - The engine idles until warm then it dies.


has it got a idle control valve, have tried adusting throttle cable slightly

Oct 05, 2009 | 1985 Nissan Sentra 2 Door

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Truck idles in park but drops to about 500rpms and lower if idling in drive and dies.


sounds like the idle air control vavle. when you put a load on the engine such as putting it in gear or using the ac or turning sharply, the iac is suppose to let more air in so the engine will idle up a little. if its stuck and you load the engine by pulling it in gear it will let the idle drop and possibly die.

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1996 VW Jetta with 2.0 engine. Dies when slowing from high RPM


Check your vacuum lines, make sure there is no leaks, and go from there, then all you electrical connection in the engine compartment.
I have a 1996 Jetta Trek Edition, the hoses, and wire harness, are so brittle, any movement can cause hoses and wire insulation to crack.

Apr 27, 2009 | 1996 Volkswagen Jetta

1 Answer

Dies when idling, does better with a/c on, but still dies


this is your problem:

Here are the most common causes of surges, stalls at stops, low 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, 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

Apr 06, 2009 | 1995 Ford Escort

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