Check Engine light coming on and off
Thread Starter
Member
Joined: Apr 2006
Posts: 191
Likes: 1
From: Richardson, TX
'04 Cobra & '04 S430
Check Engine light coming on and off
My wife was driving the car last Thursday, and she told me the Check Engine light turned on. She mentioned all sounded fine and drove on to work. Later, on her way home, the light did not stay lit, so I didn't think much about it but that maybe it had somewhat bad gas in it and it was all good for now.
Well, I was driving it today, and in the morning the Check Engine light came on again. Later on in the day - on the way home the light did not come on.
Does anybody know what issues could cause the light to come on and go off like that?
Well, I was driving it today, and in the morning the Check Engine light came on again. Later on in the day - on the way home the light did not come on.
Does anybody know what issues could cause the light to come on and go off like that?
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Joined: Aug 2005
Posts: 31
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From: Boringville, Ca
2001 E320 (SOLD) / 07 Ducati
My ride has the same issue. Please read this thread for some insight:
https://mbworld.org/forums/e-class-w210/159018-what-can-w210-owners.html
https://mbworld.org/forums/e-class-w210/159018-what-can-w210-owners.html
Thread Starter
Member
Joined: Apr 2006
Posts: 191
Likes: 1
From: Richardson, TX
'04 Cobra & '04 S430
I don't think that helps too much. My car rides smooth as silk unless it is moving along a really bumpy road. Idle and everything is fine as far as I can tell. For now the light is off, but I'm sure it will be back on before too long again.
Hopefully by the next time it comes on, I'll have the OBDII reader I ordered, and potentially might be able to catch an error code before it goes off again. Just thought it was odd it would go on and off. Most situations I have seen, when the light turns on, it stays on till the code is cleared either by an OBDII reader or by disconnecting the battery. This issue baffles me a little since it goes off on it's own.
Hopefully by the next time it comes on, I'll have the OBDII reader I ordered, and potentially might be able to catch an error code before it goes off again. Just thought it was odd it would go on and off. Most situations I have seen, when the light turns on, it stays on till the code is cleared either by an OBDII reader or by disconnecting the battery. This issue baffles me a little since it goes off on it's own.
Member
Joined: Dec 2002
Posts: 233
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From: LA
W210 E320
I don't think that helps too much. My car rides smooth as silk unless it is moving along a really bumpy road. Idle and everything is fine as far as I can tell. For now the light is off, but I'm sure it will be back on before too long again.
Hopefully by the next time it comes on, I'll have the OBDII reader I ordered, and potentially might be able to catch an error code before it goes off again. Just thought it was odd it would go on and off. Most situations I have seen, when the light turns on, it stays on till the code is cleared either by an OBDII reader or by disconnecting the battery. This issue baffles me a little since it goes off on it's own.
Hopefully by the next time it comes on, I'll have the OBDII reader I ordered, and potentially might be able to catch an error code before it goes off again. Just thought it was odd it would go on and off. Most situations I have seen, when the light turns on, it stays on till the code is cleared either by an OBDII reader or by disconnecting the battery. This issue baffles me a little since it goes off on it's own.
this problem just started for my e320 too, im around 60k miles but the check engine light goes off randomly. im not sure what mine is about either, i dont want to take it to the dealership either because they charge too much for everything.
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Senior Member
Joined: Feb 2007
Posts: 270
Likes: 1
From: Western Michigan
2003 E320 4Matic Wagon & 1997 E320
I think P0170 and P0173 are MAF.
Mine could be the gas cap. I was installing the jack pads on the car and had to use a rubber mallet to pound pretty hard. One of them is below the gas cap. It might have loosened it up just a bit. That was the first thing I checked before moving the car and I re-tightened it. I read that if it is the gas cap, CEL should go away after 45 minutes of driving. No I recall it was about that much time.
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Senior Member
Joined: Feb 2007
Posts: 270
Likes: 1
From: Western Michigan
2003 E320 4Matic Wagon & 1997 E320
We liked UM except the dorms. They seem to be old but she is going no matter what. The other school (Johns Hopkins) costs way too much $$$ ($56k per year, LOL).
We already paid the deposit and she has her UM e-mail, LOL. Will be there again a couple more times this summer for some orientations.
Last edited by loubapache; Apr 7, 2007 at 12:53 AM.
Senior Member
Joined: Feb 2007
Posts: 270
Likes: 1
From: Western Michigan
2003 E320 4Matic Wagon & 1997 E320
I am really puzzled by the screw head on my MAF (2003 E320 Wagon W210). I bought a set of secure torx bits from autozone. The T20 is too small and the T25 seems to be the right size but it will not go in. After a careful examination, I found the screw heads have only 5 gaps but the torx bit has 6 lopes. It is not Allen, it is not torx.
I have never seen anything like this. It seems everyone can remove these screws with a secure torx bit.
I have never seen anything like this. It seems everyone can remove these screws with a secure torx bit.
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Joined: Jan 2004
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From: Naples, FL
BMW X3. R33 skyline
i love how the forum knows what problems i am going to have, as there is always a thread with my answers on the first page!
Last edited by my E430 rocket; Apr 7, 2007 at 08:54 PM.
Senior Member
Joined: Feb 2007
Posts: 270
Likes: 1
From: Western Michigan
2003 E320 4Matic Wagon & 1997 E320
M112 Crankshaft Position Sensor (Bosch or Hella)
Short version of my question for 2003 E320 Wagon 4Matic (W210). Which crankshaft position sensor should I get, Bosch or Hella? They cost about the same.
Here is the long version. Your reading and comments are deeply appreciated.
A couple of days ago when I start the car in the morning, the check engine light did not turn off. After a couple of re-starts (checking the fuel filler cap, etc) and drove it for about 45 minutes and the CEL turned off by itself after a stop in a store and a re-start. The CEL has not turned on.
Went to Autozone to pull any stored code (CEL was NOT on) and there was a stored code P0355 that indicates malfunction of the crankshaft position sensor circuit. The strange thing is that that code cannot be erased by their scanner so the guy said it might not been trigged by the light the day before.
The car did not have any start/stalling or idling problems. Everything is normal.
After a lot of reading on various forums about this sensor, I was finally able to locate it. I unplug the connector and saw a bit corrosion so I cleaned it and the sensor contacts with electric contact cleaner. I was also able to feel with fingers that E8 bolt and put on an E8 socket (1/4 drive) but did not unbolt it. It seems that the unbolt and re-bolt of that bolt is completely by feel because I cannot see the bolt head. I was afraid not being able to put it back once I take it out because I have not experienced any trouble yet.
Thanks,
Here is the long version. Your reading and comments are deeply appreciated.
A couple of days ago when I start the car in the morning, the check engine light did not turn off. After a couple of re-starts (checking the fuel filler cap, etc) and drove it for about 45 minutes and the CEL turned off by itself after a stop in a store and a re-start. The CEL has not turned on.
Went to Autozone to pull any stored code (CEL was NOT on) and there was a stored code P0355 that indicates malfunction of the crankshaft position sensor circuit. The strange thing is that that code cannot be erased by their scanner so the guy said it might not been trigged by the light the day before.
The car did not have any start/stalling or idling problems. Everything is normal.
After a lot of reading on various forums about this sensor, I was finally able to locate it. I unplug the connector and saw a bit corrosion so I cleaned it and the sensor contacts with electric contact cleaner. I was also able to feel with fingers that E8 bolt and put on an E8 socket (1/4 drive) but did not unbolt it. It seems that the unbolt and re-bolt of that bolt is completely by feel because I cannot see the bolt head. I was afraid not being able to put it back once I take it out because I have not experienced any trouble yet.
Thanks,
