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Citroen SM MAP sensor 0280100036 not working

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29 Dez. 2015 10:26 #2756 von nordfisch
nordfisch antwortete auf Citroen SM MAP sensor 0280100036 not working
I understand and wonder why there is no screw at all.
I believe in Volker asked for a photo of the inside of the opened sensor.

Regards
Norbert
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29 Dez. 2015 10:50 #2757 von rhysaccess
rhysaccess antwortete auf Citroen SM MAP sensor 0280100036 not working
I had missed the point of Volker's request - in that dismantling the unit was requested.

The unit has its original rivets intact. I have been a little reluctant to dismantle it further and risk Bosch receiving it - in a dismantled condition ........that discourages any repair effort on their part (?)

Regards,
Rhys
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29 Dez. 2015 12:07 #2758 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

no that was all I wanted to see. I now know that your MAP sensor is without slotted screw. Whil still wondering how one could remove this without opening the rivets and housing, that means 2 things:

1. Your MAP sensor's armature shaft is in an undefined position. Maybe slotted screw is completely screwed inside
2. Most probably your MAP sensor is left unusable if parts are missing or destroyed by that

Of course you are free to open it and check whether you find the slotted screw. But please be careful when removing the rivets. Do not drill a wider hole in the housing. If you find the slotted screw inside, and if the thread holding it is still okay, I might be able to repair it. If not I will have to wait and see how Chris's MAP sensors perform. If I see that I can tune an 011 to match that curve, then I would buy one from eBay and do so.

But first we have to wait. If you find the slotted screw and proper thread in your MAP sensor, then I might also repair yours. Please do not touch the coil and its springs inside.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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29 Dez. 2015 15:10 - 29 Dez. 2015 22:54 #2759 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

when I look at the picture, it looks like someone has drilled into the slotted screw. As a consequence it is now unnaturally screwed as deep as possible inside forcing the armature shaft to be always fully in coil. That means more than full-load to ECU.

I might be wrong, but that's what it looks like.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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Letzte Änderung: 29 Dez. 2015 22:54 von Dr-DJet.
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29 Dez. 2015 23:55 #2760 von rhysaccess
rhysaccess antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Volker,

Yes - I agree. It looks like someone has drilled inside the unit. The puzzle is only explained if I pull it apart.

I shall attack it with a blow torch and angle grinder later today.

Regards,
Rhys
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30 Dez. 2015 10:38 #2761 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

well all you need to do is drill off the head of the rivets carefully, they are aluminum. That's how I open them. Later I cut in a thread for M5 screws.

The problem might now be with your MAP sensor that both the slotted screw with its special head and the thread in MAP sensor housing are ruined. If worst comes to worst also aneroid cells are destroyed by the force squeezing them. No wonder that your MAP sensor indicates maximum pressure and fuel need to ECU.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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30 Dez. 2015 13:57 #2762 von rhysaccess
rhysaccess antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Volker,

I dismantled the MAP sensor this evening. I also dismantled a 048 sensor from a Citroen DS 23 that wasn't holding vacuum.

Photos of the SM unit are below......it looks better than I thought. The cells seem to show blatant signs of wear or touching on one side over the other.

I might make one out of the two and reassemble.

Cheers,
Rhys

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30 Dez. 2015 14:01 #2763 von rhysaccess
rhysaccess antwortete auf Citroen SM MAP sensor 0280100036 not working
Volker - is it worth shifting this thread (after the trigger issue) to a new thread indicating MAP sensors for easier future searches by others?

Cheers,
Rhys
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30 Dez. 2015 14:26 #2764 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

I have moved to a new thread. Now please mark both housings with coils and armature so that you always know which one is the right one. And please do not remove the coils. I propose you send me both MAP sensors like that With Chris's original MAP sensor I will be able to make one working one for you with the original back and the new front. I guess the old front is gone as the thread and screw are dead.

I can also insert proper 4 screws for you. The proper adjustment of the screw pushing on armature shaft is very sensitive.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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30 Dez. 2015 17:49 #2765 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi,

all this reminds me of another type 2 sensor I recently had in my hands:

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They are both raped and killed. :Bang: How could one do this :FIGHT:
Viele Schraubergrüße - best regards, Dr-DJet Volker
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14 Jan. 2016 18:35 #2880 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

haven't heard of you recently, also no reply to my private message. I now have collected references for your 0 280 100 036 MAP sensor and can repair and tune it if you still need that. A reply would be nice whether you still need help.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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17 Jan. 2016 15:12 #2892 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

I must say that I find your sudden silence disappointing. We have done everything to find out that your MAP sensor was manipulated beyond repair, Finally others have supplied me with references for your MAP sensor and I have offered everything I could to help you here and via private message. Now ignoring this without any further reply is not what I consider a nice behaviour. :NO:

Fortunately most people are more thankful. Otherwise I would not feel motivated to offer such a service as this website and this forum.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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17 Apr. 2016 08:52 #3709 von rhysaccess
rhysaccess antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Volker,

Firstly - one thousand apologies. I am very grateful for all the assistance by yourself and others in the forum over an extended time.

Subsequent to driving the my SM (some months ago), I experienced some cooling issues with the SM engine (head gasket leaking) that had me park the thing in the corner and wait for parts, time and some new strength to persevere. EFI issues were put to the back of my mind . The two Chevrolet Corvairs, Amphicars, NSU Max & Prinz that I also maintain, took all my automotive mental space. (there is more - they just didn't need attention)

What has felt like weeks - has become months. No logging on to forums, means no private messages. I'll PM you with my e-mail address to ensure no repeat occurs.

Again - sorry for the offence.

Regards,
Rhys
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17 Apr. 2016 10:51 #3710 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Howdy Rhys,

this forum automatically forwards Private Messages to your email address when you are not logged in (at least a message saying that you got a message). So that is not a real excuse for not answering for 3.5 months.

You got free and quick response from us in this forum plus a lot of effort to find a reference for your MAP sensor by Hans, Christian and me even during my holidays in Sweden. Now don't tell me that you did not reply due to not being informed. Sorry, that is not true.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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17 Apr. 2016 12:55 #3715 von rhysaccess
rhysaccess antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Volker,

I don’t know what to say….I’ve tried to graciously apologise – but you don’t accept it.

Irrespective of what you might think, I’ve only ever received one e-mail notification of a PM from Old Timer tips which was from a PM from you on 6/11/2015. Despite no evidence in my inbox, perhaps one did arrive and it went to a junk folder or accidently got deleted with the 200 e-mails a day I’m obliged to delete in the course of the day. I don’t know.

Either way, the stakes here not high enough to justify me telling a silly story ….or any counter-accusation of lying from you. My car has been dormant and I hadn’t touched the EFI system for months.

If you choose to be hurt and think the worse – so be it. If you choose to accept the apology ….we move on

Regards,
Rhys
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17 Apr. 2016 13:49 #3716 von Dr-DJet
Dr-DJet antwortete auf Citroen SM MAP sensor 0280100036 not working
Hi Rhys,

I have sent you the following Private Messages:

Xmas Eve 24.12. 11:17h and 12:25h informing you that I will get hold of a 0 280 100 036 MAP sensor for refernce measurement
Code:
Hi Rhys, Chris has several 036 MAP sensors and will send them to me for measurement. One of his is also opened like yours was. Now there is only two problems: 1. I am not at home from 28.12 to 10.1. maybe not such a bipg problem, as shipping from AUS will anyhow take time. So if your package arrive around 7. or 8., that would be okay. It will stay in post office for 1 week. 2. Customs in DE is a nightmare. So please declare a gift, defective and a value of 20€ . Hopefully that should make it pass through customs. Inside please put a letter that I shall adjust it and send it back to you. Now for preparation: If you could remove the new potting from your MAP sensor, that would be fine. I need to acccess the slotted screw underneath. After tuning it I will use a new bright yellow and non tranparent glue for potting. SImiliar to what Bosch uses nowadays. If you want to do the potting yourself, you can, but lease do not touch the screw at all. For my efforts I would charge my normal testing fee plus transport back to you. If that sounds okay to you, please let me knwo. BR, Volker

New Years Day 1.1.2016 I offered that I make one good MAP sensor out of your 2 bad ones and gave you my address for shipping
Code:
Hi Rhys, if you want me to repair and tune your MAP sensor, send me both to ma address Volker ........., Germany. I think they will take 2 weeks to arrive. I will return home on 10. January. Best regards, Volker

Wouldn't you be frustrated with someone for whom you have taken all efforts even on Xmas Eve and who suddenly does not reply after having asked help nearly every day? Stupid me, I felt guilty for going on vacation and not being able to help you during that time. In parallel I had asked for your reply inside the forum.
Viele Schraubergrüße - best regards, Dr-DJet Volker
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