Help with irregular idling
Thread Starter
Member
Joined: Aug 2004
Posts: 191
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From: Boston, MA
2005 E320, 2004 C240 4Matic, 2001 S430
Help with irregular idling
My cousin's 1997 E320 seems to have a problem when idling and even at low speeds - especially when the car is cold, the idle is not constant but goes up and down constantly between approximately 500 and 1000 RPMs. At low speeds (for instance when approaching an intersection) this sometimes makes the car slightly sprint forward as the brakes are depressed (this is not very noticeable and it most likely happens due to the same problem when the engine revs itself up).
Any ideas about what might be causing this?
Any ideas about what might be causing this?
MBWorld Fanatic!
Joined: Mar 2006
Posts: 1,627
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From: West Virginia
2001 E320 RWD - Brilliant Silver/Ash: 100,000+
I might help, and I don't see how it could hurt, to add a fuel injector cleaner to the gas tank. MB appoves of Chevron Techron Concentrate and I have read about several people on here using that. MB also sells their own branded gas-additive through their dealers too.
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Super Member
Joined: Sep 2006
Posts: 563
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From: California
1998 E320
There is nothing wrong with buying mafs on ebay, you just need to make sure they are OEM, not "OEM FIT" or "JUST LIKE OEM." You need to make sure the part is actually made by bosch. I got mine on ebay and had no problems 
Show me the link to the ebay auction that you purchased the maf from.
Show me the link to the ebay auction that you purchased the maf from.
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Thread Starter
Member
Joined: Aug 2004
Posts: 191
Likes: 0
From: Boston, MA
2005 E320, 2004 C240 4Matic, 2001 S430
Will get the link soon, I think the part is not Bosch but the auction said it was the exact replacement of the part number we needed.
The other funny thing is that his car is almost your car's twin - white with clear lights, however with the grille slats painted white and no rims... Lots of issues with it, from sensors to the head gasket in only 8 months - did you experience the same?
The other funny thing is that his car is almost your car's twin - white with clear lights, however with the grille slats painted white and no rims... Lots of issues with it, from sensors to the head gasket in only 8 months - did you experience the same?
Super Member
Joined: Sep 2006
Posts: 563
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From: California
1998 E320
Will get the link soon, I think the part is not Bosch but the auction said it was the exact replacement of the part number we needed.
The other funny thing is that his car is almost your car's twin - white with clear lights, however with the grille slats painted white and no rims... Lots of issues with it, from sensors to the head gasket in only 8 months - did you experience the same?
The other funny thing is that his car is almost your car's twin - white with clear lights, however with the grille slats painted white and no rims... Lots of issues with it, from sensors to the head gasket in only 8 months - did you experience the same?
This is what you need. Insert this into your OEM broken maf that you took off. http://cgi.ebay.com/ebaymotors/NEW-B...04467385QQrdZ1
The sensor is removed with a torxl security bit.
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Joined: Jan 2007
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Hick ups at pressing the gas from idle
my 1997 E320, Slight Hickups (the RPM dives to 0 for a fraction of a second and comes back, sometimes it dives without a come back, needs restart) when i press the gas from idle position, i checked MAF, which didn't help, changed fuel pump, filter, as well as a sensor in front of the engine ( said to regulate the fuel and electric supply to injectors) i checked the coils, wires, plugs, cleaned the throttle actuator with WD40, added injector cleaner several times... could it be the injectors themselves worn out? after how many miles do the injectors need replacement? could there be any other reason? on the OBD scan
Almost a Member!
Joined: Jan 2007
Posts: 30
Likes: 0
Hick ups at pressing the gas from idle
my 1997 E320, Slight Hickups (the RPM dives to 0 for a fraction of a second and comes back, sometimes it dives without a come back, needs restart) when i press the gas from idle position, i checked MAF, which didn't help, changed fuel pump, filter, as well as a sensor in front of the engine ( said to regulate the fuel and electric supply to injectors) i checked the coils, wires, plugs, cleaned the throttle actuator with WD40, added injector cleaner several times... could it be the injectors themselves worn out? after how many miles do the injectors need replacement? could there be any other reason? on the OBD scan it identified 3rd injector.... i checked it and its working properly...
