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Thread: M119.980 - sometimes overheating and ticking noise

  1. #1
    Junior Member dj_rzn's Avatar
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    Question M119.980 - sometimes overheating and ticking noise

    I recently bought a CL500 from 1998, and it got a few problems engine related.
    1. Sometimes it overheats and raises pressure in the cooling system, especially when it stays at idle, but this is happening once in 2 or 3 weeks. I also noticed that my engine fan was blocked and rolling constantly with the engine (it sounded like an airplane) , it might be the reason why this is happening or is certainly the headgasket?

    2. I also have the common ticking noise, I will get some metal oil tubes, just hoping it will solve the problem


    What should I look particularly in this engine?

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    E500E Guru TerryA's Avatar
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    Re: M119.980 - sometimes overheating and ticking noise

    Sounds like a new fan clutch might solve your problem.
    Terry

  4. #3
    Junior Member dj_rzn's Avatar
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    Re: M119.980 - sometimes overheating and ticking noise

    Really hope so. Today i just found out that I was not having thermostat at all, it was missing lol

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    Re: M119.980 - sometimes overheating and ticking noise

    Quote Originally Posted by dj_rzn View Post
    Really hope so. Today i just found out that I was not having thermostat at all, it was missing lol
    Good find. They hate that.
    Putting the fun in dysfunction...

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    Re: M119.980 - sometimes overheating and ticking noise

    No thermostat installed will cause overheating. Put the t-stat back in already...! Then find the muppet mechanic who removed it and send him back to school.


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    Junior Member dj_rzn's Avatar
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    Re: M119.980 - sometimes overheating and ticking noise

    Just ordered the metal oil tubes from Stevester 500E and a headgasket tester from ebay to be sure that is not the headgasket.

    Can someone please tell me if I need to change the hydraulic lifters (in case the oil tubes doesn't solve the ticking) is it a hard job? (of course, for the mechanics )

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    Re: M119.980 - sometimes overheating and ticking noise

    It would be extremely unusual to have a failed hydraulic lifter. The problem is almost always caused by one or more plastic oil tubes which have the end cap popped off.

    Did you install the thermostat yet? As I stated previously, if the thermostat is removed it will cause overheating, as the water pump will not pull cooled liquid from the radiator.


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  12. #8
    Junior Member dj_rzn's Avatar
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    Re: M119.980 - sometimes overheating and ticking noise

    I installed the thermostat but the car is still in the shop (and for another one week will be there). I bought this car for very few bucks and we are working hard to make it good again (even the 'support' on which the engine stands had to be changed, the previous one was damaged, along with the small oil pan)

    I even bought another car, damaged in the back, to get a lot of parts from it.

    14037739_10208804104092714_1967068515_o.jpg13987841_10208804104132715_319833634_o.jpg14001869_10208804091052388_590474844_o.jpg13987197_10208804104212717_720268685_o.jpg13987064_10208804104372721_189874571_o.jpg14001934_10208804084772231_789262323_o.jpg14045143_10208804104332720_342520018_o.jpg

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    Re: M119.980 - sometimes overheating and ticking noise

    After some massive work i managed to get the car runing today (after one broken hose in the middle of nowhere).
    The temperature stays at 97-100C constantly, it does not overheat but it seems a little too much?

    My electric fans are not working of course (yet!)

    Another question, if i kickdown my car it stays limited at 3500 - 3800rpm, doesn't want to get higher. Is this the fuel pump?

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    Re: M119.980 - sometimes overheating and ticking noise

    97-100C is pretty normal for warm ambient temps in summer, especially if AC is on. If the electric fans are not running with AC on, temps should improve when you fix the fans. Also make sure the mechanical viscous fan clutch is working correctly.

    Not sure about the RPM limit at kickdown. I believe your car uses ME 1.0 injection systems (and, a 722.6 electronic trans) both of which are completely different than the systems used on our 500E's.


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    Re: M119.980 - sometimes overheating and ticking noise

    My AC is not working either so no problem.

    I remember that I've seen something on the internet yesterday about fan clutch speed at different rpms but i don't remember exactly, can u please refresh my memory?

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    Re: M119.980 - sometimes overheating and ticking noise

    With engine temps near 100C and ambient temps over 85-90°F, the fan clutch generally should be engaged. You can hear this, the fan roars loudly when engaged, if you slowly rev the engine from idle. You can also hear when the clutch disengages as the roar stops. The clutch engages based on air temp at the face, so make sure there isn't gunk on the face of the clutch, and that the radiator/condenser is clean in front of the clutch area. The clutches on the .98x engines are more prone to leaking out the silicone fluid which makes them work; on the bright side they are much cheaper than the 500E clutches.


  18. #13
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    Re: M119.980 - sometimes overheating and ticking noise

    Thanks for the info, i got the clutch and the fan from a .97x engine (produced in 2007 said on the sticker of the clutch) and i can hear it when it engages. It seems to be working ok, also i got my radiator&clutch-fan washed before reinstalling.

    I also noticed some other problem, when I am idling the oil pressure drops to almost 0 but when i rev goes back up again. I think that it is sitting too low on idle. Any ideas? Might be from the broken oil tubes?
    Last edited by dj_rzn; 08-19-2016 at 02:42 PM.

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    Re: M119.980 - sometimes overheating and ticking noise

    Wooops, sorry for the confusion... I didn't realize the W140 and R129 still used the old-style clutch, with single center bolt, on the .98x engines.

    It was only the W210 with .985 engine that used the different-style fan clutch & fan bearing bracket (and, the AMG 6L version of the 119.980 on the R129).

    :dunce:

  20. #15
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    Re: M119.980 - sometimes overheating and ticking noise

    Just washed my engine, everything was going smooth and after 5 minutes (cruising on freeway) it started to get all shaky and vibrating like it was working in 7 pistons only and one was misfiring. Any ideas? When i accelereate (over 1500rpm) it disappears and running ok.

    Engine temperature still at 100C in summer and heavy traffic.

  21. #16
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    Re: M119.980 - sometimes overheating and ticking noise

    Fixed it, just a vacuum hose disconnected. Really missed seeing it first time xD

    After I will test the headgasket, i would like to do a compression test. Any ideas on normal values??

  22. #17
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    Re: M119.980 - sometimes overheating and ticking noise

    Never wash a modern engine to many electronic nannies. You probably got water where it doesn't belong. Like Distributer Caps or Plug Wires.

    Your lucky if you don't create a backfire that blows a head gasket.

    If you have to wash use a solvent and a brush or spray brake cleaner carefully (it takes off paint). I use a little of both and wipe with rags and blow dry with an air compressor.


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    Re: M119.980 - sometimes overheating and ticking noise

    Quote Originally Posted by dj_rzn View Post
    After I will test the headgasket, i would like to do a compression test. Any ideas on normal values??
    Factory spec = 10.0 bar min, 14.0 max, with max deviation 1.5 bar between cylinders. Test must be performed with engine hot for the numbers to be valid, and you also need to do the test by manually triggering the starter so the ignition/key/computers are all off so there is no spark and no fuel delivered.

    If you live above sea level, you will also need to adjust the values for your altitude. This isn't a big deal at 1000-2000 feet, but much above that and your numbers will be noticeably lower than actual.


  24. #19
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    Question M119 white smoke intermittently & coolant loss, needs rebuild?

    Ok, so here is my problem, sometimes the car is having a lot of white smoke through exhaust, and it is burnt coolant (based on the smell & color, and missing coolant).

    The car does not overheat but it has an oil pressure problem.

    And sometimes, works great, no problem at all. Any ideas?

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    Re: M119 white smoke intermittently & coolant loss, needs rebuild?

    Have you run a compression or leak down test?

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    Re: M119 white smoke intermittently & coolant loss, needs rebuild?

    Is this your 1998 CL500 previously discussed in this thread, or a different car?

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  27. #22
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    Re: M119 white smoke intermittently & coolant loss, needs rebuild?

    @gsxr Yes it is.

    @alabbasi No test at all, this thing happened for a while but did not notice it or ignored it, but now is smoking more heavily and is certainly noticeable, also more coolant loss than usual.

    I tried the headgasket test with the fluid tester (which turns from blue => green\yellow, if a headgasket leak is present). But when I did the test, the car was not smoking (in that particular moment, it was smoking sometimes just) and the test was negative.

    PS: the oil pressure is probably because of broken oil tubes (ticking engine, got the oil tubes and everything, just didn't have time), so i guess it's from there, but is it relevant for the white smoke?
    Last edited by dj_rzn; 04-24-2017 at 01:06 PM.

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    Re: M119.980 - sometimes overheating and ticking noise

    Merged threads on same engine / car.

    If you are burning coolant... it's pretty likely a head gasket failure. Less likely is a cracked head. This would not require rebuilding the engine, just replacing the head gaskets and inspecting the heads while they are removed.

    You MAY want to consider trying a head gasket sealer like this one, before spending a small fortune on head gasket replacement... wouldn't hurt to try anyway. If it works, great. If not, the heads probably needed to come off anyway.


  29. #24
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    Re: M119.980 - sometimes overheating and ticking noise

    Great idea @gsxr, I studied this kind of easy-repair before when I suspected the headgasket.

    I really would like to try it but my only fear is that it may clogg something else in the engine ? Did anybody tried this on M119?

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    Re: M119.980 - sometimes overheating and ticking noise

    Quote Originally Posted by dj_rzn View Post
    Great idea @gsxr, I studied this kind of easy-repair before when I suspected the headgasket.

    I really would like to try it but my only fear is that it may clogg something else in the engine ? Did anybody tried this on M119?
    Usually, these products should not clog any part of the cooling system. However, make sure to research the product thoroughly before buying. Some can be added with existing antifreeze, some require flushing the whole system with water before use. Some offer a money-back (or, double-money-back) guarantee.

    I'd stick with the more expensive ones ($30-$50 USD) with good reviews. Also avoid "radiator" sealers; make sure the product is advertised as working on head gaskets or head cracks. And then follow the directions closely. On an M119, I'd drain the block first, and pour the product into the block via the upper radiator hose, then top off afterwards. This will get the sealer where it is needed, instead of sitting in the plastic reservoir and eventually, after much time, slowly flowing to the block.


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    Re: M119.980 - sometimes overheating and ticking noise

    I don't know if 100$ USD would cover the cost if anything goes bad, but anyway, i am still considering it.

    I should remove the thermostat? I guess it would be better.. Also, do you mean the hose that is pointed, or the one behind t-stat?
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    Re: M119.980 - sometimes overheating and ticking noise

    Quote Originally Posted by dj_rzn View Post
    I should remove the thermostat? I guess it would be better.. Also, do you mean the hose that is pointed, or the one behind t-stat?
    No, don't remove the t-stat! Actually, that is not possible in the .98x engines, the t-stat is integrated with the hose flange, you couldn't refill the engine with coolant if the t-stat were removed.

    Disconnect the upper radiator hose at the radiator and pour the stuff into the hose. You are pointing to the correct hose, just the wrong end of the hose. The t-stat is actually below that, next to the short 90° hose, not visible in the picture.


  33. #28
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    Re: M119.980 - sometimes overheating and ticking noise

    Maybe in the .985 because as I mentioned before in the topic, my car had the t-stat case but no thermostat inside when i initially bought it. (this was not a well-maintained car, more like an expedition car, it has seen for a few years the middle east - Syria, Iran, Pakistan etc, but no matter the cost, I will get it right, it's just too nice)

    PS: Just got some wheels for her, but a little too much tyre on front.

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    Re: M119.980 - sometimes overheating and ticking noise

    Quote Originally Posted by dj_rzn View Post
    Maybe in the .985 because as I mentioned before in the topic, my car had the t-stat case but no thermostat inside when i initially bought it.
    If the thermostat was gutted, so the internal parts were removed... the engine would overheat. The thermostat must be present and functional, it acts as a valve when the engine is hot so the water pump only draws coolant from the radiator. Disabling the thermostat on any engine is a bad idea, on a Mercedes engine it's a terrible idea.


  35. #30
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    Re: M119.980 - sometimes overheating and ticking noise

    I guess it did overheat, and this is how they destroyed the headgaskets. It also had the engine cooling fan on MAX all the time with a screw between the fan and the clutch. (probably broken fan clutch or overheating was the reason for this)

    My car is currently running in very busy traffic at about 101 - 102C, outside ambiental temp 20C (i use the REST button on the climate control to check electronic temp of engine), is it good, is it bad?

    PS: The sound with the engine fan engaged all the time is just amazing, sounds like a tornado.

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