Question about Mercedes-Benz SL550

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I lost all power in my Mercedes SL350 (2004) while driving,, wouldnt start until rested.. everything went enigine wise & the rest of the electrics went off the wall.. Ive been informed by my dealer that its the Crank shaft sensor which has a fault & when so will cut out the engine until its cooled down.... Would this be the case...! as well as a load of lights blowing.. I'm feeling its a more involved electrical issue...! Cheers guy's..

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  • 186 Answers

Sounds like the crank shaft sensor to me , would like to know if the engine management light came on and was a car code reader used , anyway buy the senser from your main dealer and for any reason it don't work you can take it back as he told you to buy it in the first place , good luck colin

Posted on Jun 20, 2017

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depends on the year. Pre 90's are a little different from post 90's.

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SOURCE: 2002 Jetta 1.8t cuts offs sporadically

Here is the common cause of surges, 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, 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 Sep 10, 2009

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SOURCE: 2001 Elantra stall, loss of power. Driving at

I am having the exact same problem with my 2001 Hyundai Elantra. I was told that the engine code that comes up when the sensor is on is called "Absolute Pressure In The Manifold". I was told by a "Hyundai Specialist" that when that code comes up it usually means that the seal on the manifold is Fuct. When my mechanic checked that out for me he had noticed that my manifold had 4 cracks in it(can varify cause he showed me). He replaced the manifold and gasket. The car ran fine for about 2-3 days and since then the problem has since come back and my check engine light will no longer go on/off it only stays on. Because of the check engine light always staying on I have noticed that on many occasions my car will hiccup many times in a row. The only way to stop the hiccup I have noticed is to take my foot right of the gas for approx. 2-3 sec then car will continue without hiccup(till it happends all over again). All in all I have been having this problem now for approx. 1 year and if there is somehow someway it could be repaired I would appretiate it.

Posted on Nov 06, 2009

steve_e_uk
  • 1675 Answers

SOURCE: mercedes clk 270 cdi check engine light

hi, unfortunately this is one of them how longs a piece of string things, you could purchase a code reader reset the error code but, what you have to think of is what caused it to do it in the first place, accelerating to hard should not cause an error ( i do it all the time in my car lol ) but it might be related to the 02 sensor getting to much unburnt fuel passing it which would cause the engine light to come on, though if the car is running as normal i doubt that will be the issue, i would myself on a car like that take it to the main dealer and get them to check it out, as buying an inexpensive code reader might not cut the mustard with this one, and parts being as dear as they are for merc's i would play on the safe side, spend a few bucks to save a load...sorry not much help

Posted on Mar 25, 2010

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