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    Hvac on W140

    Odd issues with the dual zone climate control on my 97 W140. Temperatures all over the place, set it at 23 for example and sometimes it blows cold, sometimes not except the middle vent switched to cold is always cold. Got the sensor readings from it (not showing errors as far as I could see)...
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    OM606 in 97 S300TD - intermittent "no boost"

    This is the thing on the bulkhead, has a single hose connected to the body of the EGR valve Dropbox - IMG_20190620_203832.jpg - Simplify your life A quick search indicates it is indeed a MAP sensor.
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    OM606 in 97 S300TD - intermittent "no boost"

    From what I've read the EGR is the difference between the 606.961 (W140) and 606.962 (W210) versions - the W210 uses a MAF sensor to detect EGR function, whereas the W140 (and, incidentally, 300 turbodiesel G300) use a sensor mounted on the EGR activator. The word is you can't easily disable...
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    OM606 in 97 S300TD - intermittent "no boost"

    (edit) well I hope it can be persuaded to work, as the EGR valve appears to be made of unobtanium. The US didn't get OM606 cars, I don't think, which doesn't make it any easier, and the W210 has a different version. There was a G wagen used the same kind of EGR I believe... No, I don't know...
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    OM606 in 97 S300TD - intermittent "no boost"

    Should add now: the EGR has a position sensor on it, which might be faulty and would account for the intermittent failure. I think the pipe from the EGR to the gizmo on the bulkhead is measuring manifold pressure or something, as it's on the inlet path not the EGR operator.
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    OM606 in 97 S300TD - intermittent "no boost"

    interesting issue on the W140. The wastegate is operated by vacuum, switched by a signal from the ECU. So is the EGR valve. There's a second pipe from the EGR which heads up to a little unit on the bulkhead - my guess is this is monitoring the EGR to see that it is in fact operating...
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    W140 5G-tronic question

    Techy question. The new toy ('97 S300 TD) has, as far as I can tell, the 722.6 transmission AKA 5G-tronic. Now, I used to have a 2002 E class which also, AFAIK, had the 722.6 and prior to that I had a W126 420SE which had the 722.4 and on both those other cars, it had the rather cunning...
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    W140 auto locking

    well in case anyone's watching, the answer is indeed the locking switch on the dash. Hold "lock" for 5 seconds plus to enable auto-locking, and hold "unlock" for 5 seconds plus to disable it. Also, following the instructions, can switch from 2-stage to 1-stage unlock on remote, so all good :D
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    W140 auto locking

    There are no steering wheel buttons and menus and stuff. Yes, it's speed related, and likely about 10 km/h. I'll have a look in some of the manuals I downloaded, which although for other models, should be the same in this respect. Car is a late 1997.
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    W140 auto locking

    Anyone know how to stop a 97 W140 from auto locking when you drive off? I would RTFM but it's in Portuguese and for the wrong car :D
  11. L

    My latest Merc.

    It's a good colour. I'm not so keen on the W140 in light colours.
  12. L

    W140 S300TD 1997 owners manual

    might be worth a shot. I downloaded a bunch of them in a rar archive for a few bucks, but they don't have the 97 S300 TD. I might call in the dealer just for the laughs. The book in it is in Portuguese, so even though not correct for the car it's the correct language seeing as it was ordered...
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    W140 S300TD 1997 owners manual

    Anyone know where I can get one, either pdf or ideally on paper if not too pricey. Just got this W140, which comes with a handbook/owners manual, except when I looked the manual is for a C140 coupe, not for a saloon/sedan. Note, I've already seen the various links to Mercedes USA (doesn't...
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    My latest Merc.

    Not what I was actively seeking, but it's in good condition and all seems to work. S300 TD, OM606 engine.
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    W169 A150 aircon

    Hmmm. Well I can see where the sensor is, and the wiring seems intact. Can't actually reach it to unplug the wire and test it, mind - it might be do-able from underneath with a pit or lift though. Next trick is to rig a 12V supply and see if the clutch on the pump works, I think, which would...
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    W169 A150 aircon

    Got the aircon regassed today but it's not cutting the pump in. My guess would be electrical issue, not energising the pump clutch. The fuse chart says heating/aircon is fuses 5,70 and 71 although on this car, if it has a fuse 71, I can't find it. 5 and 70 are OK. The chart doesn't show a...
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    engine swap for w108

    May not help you but I've got me eye on a W108 in Portugal, where I will soon be moving, and someone has put a 240D engine in it. I can think of worse choices but not many :D If I get it the long term plan will be to swap for etiher a 5 or 6 cylinder 300 - the MO617 turbo was used up until...
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    old cars and engine swaps...

    It would also be kinda nice to keep the simplicity of the older cars. I didn't know about swapping the pumps from SOHC to DOHC motors, though which could be an option. was almost tempted to keep the 320CDi and put the engine and box in one or another S class, but I reckon the electronics might...
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    old cars and engine swaps...

    Since I'm soon moving to Portugal I'm eyeing up cars there, because I want LHD and importing cars to Portugal really isn't viable. Among the possibilities is a W108, originally a 280SE, which some sacrilegious git has put a 240D engine into. Now, fitting a diesel I could excuse on grounds of...
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    W169 A150 poor cold start

    Further to this... I think I may have a handle on the issue. I suspect the fuel pump is not operating when it refuses to start. The other day early in the morning it was cold and took 4 attempts to come to life, but on the 4th attempt I noticed the fuel pump priming when I turned the ignition...
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