2003 audi TT150. sometimes it drops off the throttle but if kicked down it r

1. 52

   yinkakofiposted 8 years ago

   2003 audi TT150.     sometimes it drops off the throttle but if kicked down it responds again.
   
   also sometimes does not feel as responsive as it should but the clock shows revs are going fine.  No problems at idle.

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2. 79

   arksysposted 8 years ago

   does the check engine light go on?
   what is the octane level of fuel?
   last time you got the plugs/throttle body cleaned?
   fuel consumption ok?

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   1. 52

      yinkakofiposted 8 years agoin reply to this

      thanks.
      engine light went on once, then diagnostic done and reset.
      95 octane
      new plugs at major service.
      I am going to clean the throttle body
      fuel consumption in high 30 mpg
      I appreciate your input.
      brian

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   2. 79

      arksysposted 8 years agoin reply to this

      check for air leaks along the intake system. maybe when you do the throttle body make sure everything is tight. not sure if you have MAP sensor or MAF. Make sure it is clean with no air leaks. let me know if all good.

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   3. 52

      yinkakofiposted 8 years agoin reply to this

      ok thank you for your time, much appreciated

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3. 52

   yinkakofiposted 8 years ago

   thanks irfan,
   
   I am waiting for a throttle body gasket, when I clean the body and fit it I will certainly let you know the results. 
   I have had a garage check for pipe leaks but I am not certain that the check was good enough.  Is there a way to check for this by adding something to the air supply? (as I do with plumbing).
   the car is quite driveable in the meantime, I just have to touch the throttle a bit harder about  2% of the driving time and it recovers immediately.
   This is the wifes car which I now drive as she is unwell and needs a driver, she says she had no problem so it must have developed very recently,  otherwise I am surprised how nice these cars are. (probably better than my van).
   
   brian

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   1. 79

      arksysposted 8 years agoin reply to this

      I have a hub (article) that outlines everything you can do yourself. look for "Engine Control Module and Sensor Locations" in my profile.
      Yes there is a way. You need to get a carb (carburetor) cleaner spray and spray on the joint locations to ...

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   2. 52

      yinkakofiposted 8 years agoin reply to this

      well I have thoroughly cleaned throttle body and replaced gasket.  Also cleaned any connections I can get at.   Not changed the fuel octane yet or checked for leaks.
      Still very briefly dies on me with no pattern.  Very annoying but driveable.

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   3. 79

      arksysposted 8 years agoin reply to this

      If its ok on a light foot, but dies when you have an instant heavy foot on the accelerator then its definitely air leaks. no pattern makes it harder to diagnose. could be something really simple. Is the air filter clean?

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   4. 52

      yinkakofiposted 8 years agoin reply to this

      when made to think I realise that it dies on both a light foot and a heavier foot but comes immediately back on line when the pedal is pressed quickly.
      all just had a major service but the fault was there previous to that.
      At least I am learning

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   5. 79

      arksysposted 8 years agoin reply to this

      Put a business card a few mm away from exhaust pipe with car on idle. Does it suck it in? Response may be slow. Clean crank and cam sensors first and o2 sensor too if you can. Have you replaced the Catlytic converter before? Car go over 90km easily?

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   6. 52

      yinkakofiposted 8 years agoin reply to this

      the card is actually sucked in, why is that?
      I run out of bottle when I reach 100mph but there is a lot left and it is accelerating well.
      I will clean the sensors in a couple of days time.
      thanks for all the answers,
      brian

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   7. 79

      arksysposted 8 years agoin reply to this

      Sucked coz of aik leak in exhaust system. If no problems at 100 then all good. Can skip this for now. Not a very serious issue.

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