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Thread: @Xulfiqar Sb: Bought c180 98 model (my 1st Merc) Help with startup maintenance/repair

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    Default @Xulfiqar Sb: Bought c180 98 model. Need help with maintenance/repair.

    @Xulfiqar Sb:
    I have seen lots of threads and lots of posts and am deeply impressed by your knowledge of vehicles. I am trying to browse through but things are so spread about that it is confusion. Moreover, perhaps every case is different and need specialized help, at least for the first time.

    This Monday, I bought a c180 98, Elegance Model with 93K miles (allegedly) on the odo. In driving for these 3 days I have jotted up a list of my observations, some serious, I believe. I need your expert advice on it. Here is the list of serious observations:

    [Post Edited with problems listed as solved/unsolved. The details of how a problem was solved is spread all over the many pages and posts. Please delve into the thread for details.]

    SOLVED PROBLEMS WITH CAUSES AND REMEDIES:
    ---------------------------------------------------------------------------
    1. Vibration in D, Cause: One engine mount was cut, replaced.
    2. Temp gauge does not get to half point, Cause: T-stat valve was jammed, replaced.
    3. Fluids replaced = Engine Oil and Transmission oil.
    4. Vibration in steering at all speeds, Causes: Mountings (changed), warped rotors, machined, balancing and alignment done. New steering shock installed.
    5. Rear Left Window does not close with button on door, Cause: Button faulty, replaced.
    6. Random HVAC blower speed: Ordered HVAC control unit from eBay. Fitted and working fine. No more issue.
    7. Broken Cruise Control: Ordered from eBay. Fitted and working fine.
    8. SRS AIRBAG Warning Light in Dash, Cause: Star scan tool (at Papu ustad, Pindi) told about two crash sensors (one under each front seat) to be faulty (or their connection is faulty). Shop gave a price of Rs.7,000 for 2 but I see that used are cheaply available on eBay. Would order two soon.
    9. Left handbrake shoe friction sound. I fitted new handbrake shoes and thought it needed adjustment. However, it turned out, after 5 tries at it, that the lug nuts on the wheels were of slightly varying length. The longer ones would brush on the handbrake clip that expands the mechanism. Older one was damaged. Got it replaced. Sound started coming after few days. I swapped some lug nuts from other wheels. It is peace ever since!
    10. Intermittent Windows -- Passenger and Driver side windows would not operate after few days of reset in any order. I suspected the rear-left window control module, opened the door cover to find that there is no window control module there! So this must not be the cause.
    Recently, I cleaned all the electric ground points in the vehicle. The issue of intermittent windows had reduced a great deal. More so, because before starting the vehicle, I operate all windows (first point in ignition).
    11. COOLANT VANISHING -- I needed to add 1 L in like 2 weeks (driving 300 miles). The cause was a leaky radiator. In summers the problem increased until I saw coolant drops beneath an idling car. Previous radiator was corroded with use of wrong coolant. Radiator replaced with a good condition exact part (Behr) from a half-cut. Coolant used would definitely be as per spec or MB.

    UNSOLVED PROBLEMS that are being debugged:
    ------------------------------------------------------------
    12. Relay clicking type sound behind key:
    The sound can start anytime but luckily not too often. Usually in peaceful driving it would be calm. Sometimes when I take some action like press brake pedal, turn on indicator, it will start clicking. I can feel the throbbing when I touch the key. Would start and stop itself.
    I have found out that whenever that clicking sound is heard, horn won't blow. Conversely when the horn does not blow, there are chances of those clicking sounds. When the horn blows, there won't be any clicking sound in that drive. Still trying to solicit the cause in a deterministic way.
    13. Sudden Downshift Jerk: Sometimes after driving the vehicle for a long time, like one hour, when slowing down because of mild braking (to a speed for which 1st gear may be needed) the car shifts into 1st gear very hardly.
    Kindly please advise. I am a keeper since I am a busy person. The car I was driving before this is with me for 9 years. For once, I want this car to be in a state that I know how things are. Thank you in anticipation and sorry for trouble.

    @Xulfiqar Sb Bought c180 98 model my 1st Merc Help wi startup maintenancerepair -1636367

    PS: Car is with me for 6 months now, with 99,000 miles on Odo. (21 May, 2016)
    Aamer

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    Quote Originally Posted by Marschall View Post
    Sir their cleaning is a must but only for warm air.If your vents have stopped working i.e they are not throwing cold air but ur aircon is switched on there can be multiple reasons, mine was a punctured actuator,there could be a vacuum leak as well.
    Which vents are not blowing air?
    No vent blows cold air. Despite the condenser turned on and thermostat knobs on blue, the duo-value is hot to touch.

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    Quote Originally Posted by x2 View Post
    No vent blows cold air. Despite the condenser turned on and thermostat knobs on blue, the duo-value is hot to touch.
    You mean no air is coming out of the vents??? or just no cold air??? For duo valve checking and cleaning visit Behram he will try to sell u a new one just get the old 1 cleaned and tell him to show you if the valves are opening or not.
    "Stand by your glasses steady and drink to your comrade's eyes.
    Here's a toast to the dead already and hurrah for the next to die."

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    Quote Originally Posted by Marschall View Post
    You mean no air is coming out of the vents??? or just no cold air??? For duo valve checking and cleaning visit Behram he will try to sell u a new one just get the old 1 cleaned and tell him to show you if the valves are opening or not.
    All vents blow air. But it is warm, as if the AC is not working.
    With your youtube link, I have decided to get to cleaning the due-valve myself. I just need to get hold of a long handle screw driver.
    If it still does not solve the problem, I will seek expert help from Behram.

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    @Marschall:
    Just got to cleaning the Duo Valve. Worked it very easily and in a fine way. When reached that small piston-valves, found both of their tooth-pick thin shafts broken!
    Can we just buy those two small pieces or need to buy the whole Duo-Valve?

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    visit Behram or Abdul Mateen these duo valves are lying around with them 7k new and 3k used ..........Papu might have some with him...but i think those shafts are not sold separately
    "Stand by your glasses steady and drink to your comrade's eyes.
    Here's a toast to the dead already and hurrah for the next to die."

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    Thanks.
    Checked eBay. I do not think I will be any better ordering on eBay.
    Talked to Noman. He says for now, till winter sets in, to close the valves.
    Before going to him I may visit Abdul Mateen's place and try to find a good piece.

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    yes like i said they have nothing to do with ac or cooling they are just for warm air.....whats the update on the aircon
    "Stand by your glasses steady and drink to your comrade's eyes.
    Here's a toast to the dead already and hurrah for the next to die."

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    Updates:
    Went to Abdul Mateen's compound today. Thought must purchase Duo-Valve, Crash Sensors and Clock-Spring (in steering).
    Guess what? Duo-Valve = Rs.10K, Crash Sensors = Rs.10K, and Clock-Spring = Rs.10K!!!!
    Whereas I see that used Duo-Valves on eBay are fraction of the cost, Crash Sensors as low as $20 or so.
    So did not buy that.
    Car is not in much use. Whenever I take it to them, I will get the valves closed for now. In the meanwhile will try to solicit one online and request a friend to bring to Pakistan.

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    Quote Originally Posted by x2 View Post
    @Marschall:
    Just got to cleaning the Duo Valve. Worked it very easily and in a fine way. When reached that small piston-valves, found both of their tooth-pick thin shafts broken!
    Can we just buy those two small pieces or need to buy the whole Duo-Valve?
    you can repair them with rivets - just need to be careful to not fully pop the rivet. let keep the rivet tail intact. This also depends on the type of valve you have, one is easy to rebuild - the other type is a royal pain and requires making some washers.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    The only way to bypass the heater system in any benz is to reroute the heated coolant pipes, the valves allow coolant to flow when required. Broken valves flow all the time.

    The MB system controls temperature by routing coolant to the heater core(s) - not by diverting airflow like japanese cars.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    If u however just take out those two golden rivets the heater will be direct.............but its gonna be v hot
    "Stand by your glasses steady and drink to your comrade's eyes.
    Here's a toast to the dead already and hurrah for the next to die."

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    Quote Originally Posted by Marschall View Post
    If u however just take out those two golden rivets the heater will be direct.............but its gonna be v hot
    hot??

    pizza oven would be more like it.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by Xulfiqar View Post
    hot??

    pizza oven would be more like it.
    p.s i need your assistance,,,,,kindly let me know if u can help
    "Stand by your glasses steady and drink to your comrade's eyes.
    Here's a toast to the dead already and hurrah for the next to die."

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    Thank for your replies @Xulfiqar. Though I have not really understood how to re-work them. For now I have removed them and do no dare to drive in this heat! If I had too it would better with without an air circulation.

    By the way, I just figured out that, the AC condenser's inside does not get rotating when I press the button OFF (red bulb turns off). So on or off the inside does not rotate. Based on some video I believe the condenser clutch is not engaging.

    So it is not the valves only!

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    State of affairs when I reached there.

    @Xulfiqar Sb Bought c180 98 model my 1st Merc Help with startup maintenancerepair -1691437

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    How things are, outside!

    @Xulfiqar Sb Bought c180 98 model my 1st Merc Help with startup maintenancerepair -1691438

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    I think you can buy those two poppets alone from some websites or you can set about trying to make a workable solution (some BMWs also use this exact valve) - a rivet can be workable - or you can try finding some industrial epoxy and then sanding it down.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    Quote Originally Posted by Xulfiqar View Post
    I think you can buy those two poppets alone from some websites or you can set about trying to make a workable solution (some BMWs also use this exact valve) - a rivet can be workable - or you can try finding some industrial epoxy and then sanding it down.
    I hardly know what I would be calling them. Can you help me guide to some such website?

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    This is a link I found for riveting. I guess I need to try this.

    Duovalve broken stem/valve fix DIY page one. - Mercedes-Benz Forum

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    find a fine work machinist and ask him to make you a couple of the poppets and stems from brass.

    look for duovalve rebuild kit - you will find it.


    btw - nice link, I didnt know someone posted their work, I did this repair a LOOOOOOOOOOONG time ago on a few cars.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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