Recent content by 944S2cab

  1. 9

    W220 hesitation on acceleration

    I have changed all the transmission fluid and the filter. The fluid was black. It was probably 20 years old. (Not my fault. I've only had the car for a year). When I floor the accelerator the car now goes like a rocket all the way to the red line. It has never driven so well and the gearchanges...
  2. 9

    W220 hesitation on acceleration

    Inside the filler cap it says to use unleaded fuel only. I've been using Shell ordinary unleaded since I got the car earlier this year. It certainly seems livelier on 97 octane. Maybe the fuel system cleaner has done some good. I have just taken it out and used 2nd gear in manual mode. The...
  3. 9

    W220 hesitation on acceleration

    I took the car out today and floored the accelerator pedal. It kicked back a bit then changed down a gear. I kept the pedal to the floor and it jerked and changed down another gear before revving up to the red line. I enjoyed the drive home after that. While stationary at home it will not rev...
  4. 9

    W220 hesitation on acceleration

    I fitted a new Hella pedal position sensor. It made no difference. It then produced fault code P0170. Self-adaptation from the mixture forming. Thinking it could be a blocked injector I cleared the code and poured a bottle of Wynn's extreme fuel system cleaner into the tank and drove the car. No...
  5. 9

    W220 hesitation on acceleration

    Alabbasi. Thank you for that. I've already replaced the MAF and plugs so I have ordered a new throttle pedal position sensor. I obtained more live data showing that the pedal position sensor readings increase up to 3500 rpm when the engine kicks back. I don't know what the minimum readings...
  6. 9

    W220 hesitation on acceleration

    For the last 2 months I have had a problem with acceleration on my 1999 S430 (petrol). The engine is fine until I press the accelerator beyond approximately half way down at approx. 3500rpm, when it kicks back and seems to have run out of power. I had a fault code relating to the mass airflow...
  7. 9

    W220 V8 spark plug replacement

    I tried a 17mm open ended spanner on the plug leads but it would not move them. Nothing else worked, hence the water pump pliers.
  8. 9

    W220 V8 spark plug replacement

    Having just changed the 16 spark plugs I can offer a few tips for anyone contemplating this job. 1. Shop around. I obtained 16 Bosch spark plugs for £80 from Eurocarparts on ebay. 2. Allow plenty of time for the job. You do not want to be cross-threading a spark plug by rushing. It took me over...
  9. 9

    W220 diagnostics

    I eventually bought a Carsoft MB Sprinter Ultimate Home V12 Software package (not iCarsoft which is for 2001 onwards). This is an excellent kit which has already paid for itself. I will not go into the product details here. Check it out at www.carsoft.com. I can recommend this kit for pre-2001 cars.
  10. 9

    W220 parking sensor

    One of the rear parking sensors had slipped backwards and was partly inside the bumper. I could not pull it outwards and I could not access it from below without taking off the bumper. The bumper fixings were corroded and I anticipated problems with sheared bolts etc. The sensor did not appear...
  11. 9

    Central Locking/Soft Close/Open Boot issue.

    Well done. Let's hope that it is a permanent repair. By the way, that's a good looking car.
  12. 9

    Central Locking/Soft Close/Open Boot issue.

    Just had mine fixed by the local M-B specialist. It needed a new door locking/opening mechanism (262.50 plus V.A.T ) and I obtained a secondhand PSE pump which they fitted. Everything is working now. I have found more rubbish plastic. I have broken two of the surrounds where the chrome bars on...
  13. 9

    Central Locking/Soft Close/Open Boot issue.

    Great news. Fingers crossed that it will not give any more problems. It might be worth buying a few more fuses just in case...….
  14. 9

    Central Locking/Soft Close/Open Boot issue.

    My W220 does have a manual release for the fuel filler cap. It's not easy to reach and it is not visible. The petrol station cashiers must think I am acting suspiciously when I spend ages fumbling around in the boot.
  15. 9

    Central Locking/Soft Close/Open Boot issue.

    I have the same problem with my 220. I've only had it a month and have spent more time working on it than driving it. I can't lock it with the metal key either as there is a broken plastic component in the door lock mechanism. Be gentle when using the metal key. I used the metal key for a few...
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