Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 2nd March 2010, 12:40   #1
BHPian
 
Join Date: Mar 2006
Location: Chennai
Posts: 32
Thanked: 14 Times
Default Problem with my W124

I bought a second-hand W124 E220 last month. It has done 73000 kms on the odo and in the last 3 weeks I have driven around 600 kms (after I bought).

Off late I am experiencing an unique problem. During slow speed (10 / 20 kmph) my engine shuts off, this has happend on two different days (This happened on two days within a span of 3 weeks). Both the times within a span of 1 hour the engine has shuts off around 5 to 6 times, which is really dangerous considering that the steering wheel gets locked. The other thing I noticed is that the engine is getting hot and the meter shows around 95-100 C (am not sure whether this is normal) when I experience the above problem. I also noticed that the idling rpm is around 500-550 rpm.

I discussed the issue with my mechanic and he mentioned that this may be due to quality of fuel. But I am not convinced with his answer. But today he mentioned that this may be due to low idiling rpm.

Experts, please provide your opinion in this regard.
vasanthjn is offline   Reply With Quote
Old 3rd March 2010, 08:51   #2
Senior - BHPian
 
Psycho's Avatar
 
Join Date: Jul 2004
Location: Bangalore
Posts: 1,042
Thanked: 95 Times
Default

Sounds like you breather pipe has come off from the intake pipe above the engine, this pipe is known to harden and crack causing starting and idling problems if air gets directly to the engine bypassing the MAF sensor.

Please check this and confirm.
Psycho is offline   Reply With Quote
Old 4th March 2010, 03:44   #3
Senior - BHPian
 
V-16's Avatar
 
Join Date: May 2005
Location: mumbai
Posts: 4,575
Thanked: 844 Times
Default

Quote:
Originally Posted by vasanthjn View Post
I bought a second-hand W124 E220 last month. It has done 73000 kms on the odo and in the last 3 weeks I have driven around 600 kms (after I bought).

Off late I am experiencing an unique problem. During slow speed (10 / 20 kmph) my engine shuts off, this has happend on two different days (This happened on two days within a span of 3 weeks). Both the times within a span of 1 hour the engine has shuts off around 5 to 6 times, which is really dangerous considering that the steering wheel gets locked.

The other thing I noticed is that the engine is getting hot and the meter shows around 95-100 C (am not sure whether this is normal) when I experience the above problem.

Its difficult to say what the causes are until the car is seen personally but i will try to leaborate what the most common ones are for your problems.
Over and above what Psycho has adviced, i think you should check the coil.
Firstly its not normal for this car to cross 80-90C unless you are doing stop and go in bumper to bumper traffic for a great amount of time. Then maybe 100 but very rare. For this, get the cooling system checked for clogging, rust, blockages, leakages and always fill in a good coolant. Please also check the visco coupling of the electric fan. This may reduce the fan speed and will result in the car heating like you say it does.

Another thing that could cause this problem is a faulty cam sensor. That can be checked on a star diagnosis system easily.

Now as you say this problem occurs when the engine crosses 90-100C and when it has run for about an hour, maybe the coil is getting hot. A few minutes rest will cool the coil for it to start transmitting the current again.
Then again it may be a fuel pressure problem or as small as a dirty filter or clogged injectors.


Quote:
I i noticed that the idling rpm is around 500-550 rpm.
I discussed the issue with my mechanic and he mentioned that this may be due to quality of fuel. But I am not convinced with his answer. But today he mentioned that this may be due to low idiling rpm.
I think its time you looked for a better mechanic. Firstly the rpm of 500-550 is too low. it should idle at around 750-800. That just may be the reason your car is stalling in low speeds. First get the rpm increased to 750-800 and see if your problem persists, if its still there, then at least you got the rpm right.
Next check the coil and then the fuel related problems mentioned above that may have occured.

IMHO, fixing the rpm should stop the problem. Still, do get your radiator flushed.

I would recommend you start in the way above from the easiest i.e. increasing the rpm and thereon but do not go changing any parts unless you are absolutely sure. Alos it wont hurt get a second opinion from another mechanic too.

Please let us know if the above have been helpful in solving your problem. Hope it has.
Regards.

Last edited by V-16 : 4th March 2010 at 03:48. Reason: add
V-16 is offline   Reply With Quote
Old 4th March 2010, 10:53   #4
BHPian
 
Otto's Avatar
 
Join Date: Feb 2010
Location: Navi Mumbai
Posts: 52
Thanked: Once
Default

well, perhaps you could try keeping the engine revs a little high at the times you think this problem occurs - and see if the engine shuts off. I agree 500rpm for an idling engine is too low.
How's the smoke? is it clean? that would eliminate air/fuel problems.
Otto is offline   Reply With Quote
Old 4th March 2010, 11:34   #5
Team-BHP Support
 
Jaggu's Avatar
 
Join Date: May 2004
Location: Bangalore
Posts: 17,746
Thanked: 7,449 Times
Default

First check the fuse box, i faced the exact same issue in chennai long back. Went to the nearest shop bought a packet of those ceramic fuses and plonked em in. Everything started working fine.

So first check the fan, then move on to the cooling system. Maybe a good idea to do a complete radiator flush and fill up with new coolant also.

As mentioned above find a good merc specialist, should be easy to find in chennai.
Jaggu is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
W124 - Mercedes E220 or E250D? Which would you buy? GTO The Indian Car Scene 119 6th June 2016 15:24
How much for a 1996 Mercedes W124 E250 D? aadix Luxury, Imports & Niche 38 4th January 2014 16:24
The making of Premier Padmini W124/W210: Updated 26/7/07 maxbhp Modifications & Accessories 53 17th March 2013 17:40
Mercedes W124 Crashed! maxbhp Street Experiences 47 29th June 2010 23:40
Spotted : W124 E300 AMG/W202 C AMG/C124 v12 Super-Cars & Imports in India 5 27th December 2006 11:28


All times are GMT +5.5. The time now is 22:19.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks