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Mercedes c180 acceleration difficulty

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Gregv2701, Jan 5, 2013.

  1. Gregv2701

    Gregv2701 New Member

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    Your Mercedes:
    Mercedes C180 Esprit 1997 1.8 petrol manual
    Hi all,

    Brand new here, and new to the world of Mercedes!

    Jut purchased a 1997 Mercedes C180 Esprit. Sales went well etc and car seemed to run well.

    I've taken it in a few drives and have noticed a few things that I'm begging you fabulous experts can help me with:

    1. Interior blower stays on when the dial is on 0 and even when the keys are out! Any ideas?

    2. The Car accelerates well in 1st/2nd gear, but when going in to 3rd gear she seems sluggish, jumpy and not wanting to pull off too well (can be rather embarrassing on roundabouts!) There is an awful noise from the bottom of the engine which may be a backfire/misfire but sounds almost like a flap opening/closing or 2 bits of metal hitting each other.

    Have put redex in the petrol tank and down the carburettor, but nothing!

    Sorry for the essay, but I'm totally lost.

    Any and all ideas are most welcomed .

    Thank you all so much for reading!

    Greg
     
  2. NW_Merc

    NW_Merc Banned

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    1. The duo valve next to the brake servo on the driver's side may be stuck, there are threads on how to repair/clean it
    2. Possible ATF change needed, could also be engine mounts. May need STAR to diagnose the problem. Could be a faulty MAF sensor connected to the intake to the throttle body

    Don't use redex, it's rubbish. Instead use some of the Forte engine products or Seafoam (look on ebay) and use it in 3 parts, 1 in the fuel tank, 1 in the oil and 1 in the throttle body but be advised if there are carbon deposits in the engine you will get alot of smoke produced and will need to give the engine a full oil and spark plug service afterwards.
     
  3. television

    television Always remembered RIP

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    Your Mercedes:
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    If the heater motor is running all the time the reg pack is short circuit and it must be replaced, I can send you the instructions for doing this.

    This has probably been caused through water in the heater box.

    Not sure if your car has a MAF, it could be a good idea to take it to a local indie to see what they make of it all re the driving
     
  4. OP
    Gregv2701

    Gregv2701 New Member

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    ?

    Hi, thank you both for your reply.

    NW_Merc - do you have a diagram or explanation as to the duo valve and what I'm looking for... Can't find the threads?

    Also, don't think it'll be ATF as it's a manual. Did take the MAF out today, and gave it a clean, but to no avail. Most likely will have to have it on a STAR!

    Any other ideas?

    Television - Could you send me instructions about the short circuit? Again, I'm a bit of an amateur so could do with being told where things are, what to do and look for etc!

    The car does have a MAF and it's been taken apart cleaned etc, but no change so local indie it'll be I think!

    Thank you again!
     
  5. television

    television Always remembered RIP

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    I need an Email address to send the instructions for the heater blower motor

    Thus fault has nothing to do with any duo valve at all

    I would try the car with the MAF unplugged to see if it goes better
     
  6. carloss

    carloss Banned

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    Is there anything else it MIGHT be????:rolleyes::rolleyes::rolleyes:
     
  7. NW_Merc

    NW_Merc Banned

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    Why, have you got the same problem?
     
  8. NW_Merc

    NW_Merc Banned

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    Here is what you're looking for if you need to check it
     

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  9. television

    television Always remembered RIP

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    Why does he need to be looking at that when the fan is running all the time
     
  10. NW_Merc

    NW_Merc Banned

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    He asked for where it is and I've posted a diagram
     
  11. carloss

    carloss Banned

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    Yeah but i tried your previous suggestions which didnt solve the problem so now i am looking for more of your suggestions
     
  12. television

    television Always remembered RIP

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    Please read it again as I can so no mention of the Duo valve at all
     
  13. carloss

    carloss Banned

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    Will a problem with the duo valve cause my heater to continue to operate without the ignition on because i nipped out earlier and cleaned it up as you suggested but still the blower keeps running
     
  14. NW_Merc

    NW_Merc Banned

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    Malcolm IIRC you're not a mechanic and neither am I, so I dont even know why you're continually needing to argue. He's asked for a diagram, I have put up said diagram, but you still have to continue, your advice is hypothetical as you havent seen the vehicle.
     
  15. NW_Merc

    NW_Merc Banned

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    Would you like me to your car in person and sort it out?
     
  16. carloss

    carloss Banned

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    Yes please
     
  17. television

    television Always remembered RIP

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    I am a very good mechanic thank you, are you crazy or what,,,you told him the duo valve and that has nothing what so ever to do with the fan running.

    The only reason for the fan to run is a short circuit reg pack :D

    Please do not try to bring me down to your level
     
  18. NW_Merc

    NW_Merc Banned

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    You're a legend in your own mind Malcolm ;)
     
  19. television

    television Always remembered RIP

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    Prove me wrong in this case :D
     
  20. NW_Merc

    NW_Merc Banned

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    <yawn>

    Would that bring value to your evening? We'll let the OP have a go and see shall we......
     

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