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MAP sensor

  • packers1712
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29 Apr 2020 13:41 #13770 by packers1712 Volkswagen Typ 3 1600 E
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Good morning, I have a MAP sensor from my FI 1971 VW type 3 notchback that has gone open circuit on the secondary coil, can this be fixed or is it scrap? I have fully open it up and it isn't just a bad connection the secondary coil has no continuity.

Thanks Doug

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29 Apr 2020 14:49 #13772 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
Replied by Volker on topic MAP sensor
Hi Doug,

an honest answer is: Not really. Of course one could unwind and rewind the coil. But at what price? Economically it makes no sense. I never experienced a broken coil before. So I guess that you will not find any posisitve answers to your question. ANd if - you would still have to tune it back to original - also not an easy job.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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01 May 2020 18:22 #13799 by packers1712 Volkswagen Typ 3 1600 E
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Ok thanks so I need to find a good second hand working unit, buy a NOS unit from the samba.com at the cost of a new kidney or junk the FI and fit carburettors?
Do you have or know where i may source a good second hand unit?

Thanks Doug.

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01 May 2020 20:15 #13800 by nordfisch Europe Opel Diplomat 2.8 E
Replied by nordfisch on topic MAP sensor
Hi Doug,
please don't ask us here about a carb conversion...

We need information about the car and where you are situated.
Tell us the Bosch # of the part installed... like 0 280 100 ...

I had a look at ebay USA and found more than one unit. But at least one looks quite suspicious to me. Photos of two different sensors, both with the black cap missing in one auction...

As Volker wrote before: It makes no sense to repair your defective unit.
Parts for VW normally don't cost a kidney.

Regards
Norbert

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01 May 2020 20:42 #13803 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
Replied by Volker on topic MAP sensor
Hi,

according to my rrsearch it should either be a 0 280 100 007 type 2 with potting or a 0 280 100 101 with black cap. Depends of manufacturing date and ECU. You find details in oldtimer.tips/de/d-jetronic/druckfuehler#Liste . It is simply too much costs, trying to restore your broken MAP sensor. If I would do it, I would have to slaughter another MAP sensor and then try to adapt your unit to a working one. Much work AND cost compared to a used MAP sensor.

If you prefer a carb conversion and believe that maintaining a carb is nowadays easier than FI, please feel free to go ahead.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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23 May 2020 15:14 #13961 by packers1712 Volkswagen Typ 3 1600 E
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Hi,

Sorry for the delayed reply had quite a lot on my plate with work recently so this has taken a back seat, yes you are correct with the part number, do you know where I can buy a NOS one or a good used one?

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23 May 2020 19:28 #13965 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
Replied by Volker on topic MAP sensor
Hi Doug,

which of the 2 do you need. Then I can check my drawers. But I am not too hopeful on these 2.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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23 May 2020 20:03 #13967 by packers1712 Volkswagen Typ 3 1600 E
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Hi yes sorry I hadn’t realised that you had quoted 2 numbers, I need a 0 280 100 007 that is what is fitted to my car!

Thanks Doug.

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23 May 2020 22:43 - 24 May 2020 00:44 #13973 by nordfisch Europe Opel Diplomat 2.8 E
Replied by nordfisch on topic MAP sensor
Hi Doug,
you find at least three used units by searching ebay with the searchphrase

("0 280 100 007",0280100007,311906051C)

I don't know where you are located, don't know if or which unit is o.k. - it's your part of the game.

But wait for Volker's reply first. When he owns the unit, it will be functional or he will rebuild it.

Regards
Norbert
Last edit: 24 May 2020 00:44 by nordfisch.

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23 May 2020 23:38 #13978 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
Replied by Volker on topic MAP sensor
Hi Doug,

I have checked my standard drawers. There was 005, 006, 012, 015, 019, ... but no 007 . I have 2 more hideouts that I can check tomorrow.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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24 May 2020 10:22 #13983 by packers1712 Volkswagen Typ 3 1600 E
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Thank you so much for checking I'll keep my fingers crossed and wait for your reply!
Is this a stupid question but why can't i use any of the ones you've found are they tuned for different cars with different sized engines?

Doug.

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24 May 2020 10:45 #13985 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
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Hi Doug,

yes they are differently tuned and use different hardware (springs, aneroid cells).

I just checked my other drawers. But no I cannot help with a 0 280 100 007.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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24 May 2020 10:55 #13986 by packers1712 Volkswagen Typ 3 1600 E
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Good morning, thank for checking anyway, OK but can i use one from an earlier VW Type 3 say a 0 280 100 001 as i've located one in the US?

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24 May 2020 11:06 #13987 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
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Hi Doug,

it depends on your ECU. You will find valid combinations here: oldtimer.tips/en/d-jetronic/mps#Liste

Viele Schraubergrüße - best regards, Dr-DJet Volker
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24 May 2020 11:19 #13988 by packers1712 Volkswagen Typ 3 1600 E
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I see, my ECU is 0 280 000 019 so this is only compatible with 0 280 100 007, 008, 016 and 017 according to the table?

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24 May 2020 11:33 #13990 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
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Hi Doug,

I only see 0 280 100 007 and 0 280 000 016 for high altitudes. So only 007 is the right choice if you do not live high up in the mountains.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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24 May 2020 11:36 #13991 by packers1712 Volkswagen Typ 3 1600 E
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Ok thanks i will continue to search!

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24 May 2020 18:58 #14001 by nordfisch Europe Opel Diplomat 2.8 E
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Hi Doug,
I told you yesterday there are three ...007 units available at ebay.

Maybe they are all broken, but they are not expensive - a leaking diaphragma can be replaced and the coils <almost> never get defective.

Regards
Norbert

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24 May 2020 19:30 #14002 by packers1712 Volkswagen Typ 3 1600 E
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Hi Norbert,

I couldn't find these yesterday but that was because I was searching on ebay UK so switched to .com and found the ones you are talking about I think, the ones on thesamba.com are very similar and slightly cheaper so I'll probably use this site and keep my fingers crossed something works!

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25 May 2020 13:10 #14013 by Volker Europe Mercedes-Benz R107 450 SL, Mercedes-Benz W111 280 SE Cabrio
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Hi Doug,

if nothing works at the end, we would try to create one working out of 2 others. But that is most probably not an economic way to do. So go for a used one.

Viele Schraubergrüße - best regards, Dr-DJet Volker
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