D-Jetronic Porsche 914 2.0L ECU, Bosch 0280000052

thank you for your advice!

And who can fix that? and at what price?

Thank you.

Hi,

a type 2 MAP sensor with broken diaphragm would enrich the mixture. Here we talk of a too lean mixture if I understand it correctly.

So I ask again:

1. Is it correct MAP sensor?
2. It it with rivets and is poting still original? A MAP sensor with screws or with a suspicious potting can have been detuned.
3. What is the 3 digit number describing month of make on upper right rivet? A middle digit 4 or above is also suspicious as Boschs quality control on MAP sensor tuning in 80s to 2000s decreased
4. And most important: Does it hold vacuum as described in chapter 4 video?

And most important: Does it hold vacuum as described in chapter 4 video?
YES.

i have a lambda inovate 4.9 the top

at 985 rpm the engine is good but lambda at 68 the normal is 8.0
at 2200/2500 no benzine lambda in red.
3000/3500 rpm benzine +-ok lambda 7.8
3800 rpm +- benzine lambda 9.5
after 4000 rpm benzine is good
and higher up in the RPM full benzine

how to put pictures?
the number of my MPS is ; 0280100049

Hi,

really a 049 ? Me and Norbert have written in this thread and I have written it in my ECU and MAP sensor article: A 044 or 052 ECU needs a 043 MAP sensor ! :RTFM: That was my 4th post in this thread. 049 is for 1.7 engine.

Please check all your components. Which color do your injectors have?

Hi,

however it cannnot be the only fault. A 049 is richer than a 043. As I ran into another case on a 914 2.0 once: Please check that you have green injectors and not yellow ones. He also had yellow injectors and 049 MAP sensor.

And Lambda is a figure around 1 ... An engine with lambda 68 would not run. Even with air to fuel ration that would be difficult.

Well, I have to put everything back in the right order.
Yes you're right lambda gives 0.X
the test that I did this afternoon (35km) gives the figures that I gave but not with the 049.
but with an old thing on my shelf the MPS 0280100116
and gives a better mix.

the MPS, I bought it in June on Ebay.de membrane is good because I have the vacuum tester.
the seller told me it was for the 2L GB engine

www.amazon.fr/Manuelle-D%C3%A9pression-T...ession/dp/B01G1PL22W
my engine is a original engine green injector

my engine

Hi Lux Pierre,

what shall one learn from wrong lambda values of an engine with a completely detuned VW type 3 MAP sensor and a wrong 049 for an 1,7 engine? And we still do not know the manufacturing date of your MAP sensor.

My best advice is that you find a professional on 914 in Belgium and let them test your system. Otherwise we will soon have 100 posts and no result either. I am out.

But i dont see the date ?? sorry and where !!
I will try to buy a 043 if I see 1 on Ebay

The date is a three digit code stamped on one of the rivets, as Volker and I told you before.

Regards
Norbert

The real problem is that you do not read what we write to you and tell us something different in reply.

I wrote already that 043 will not solve your problem as it is even leaner than a working 049. If I would believe that a 043 would easily solve your problem I would already have checked my stock. But I cannot guide you if you do not tell all facts and cannot reply to our questions. Such a process will not work.

You really need a workshop to look after your car.

030

and no I do not need a specialist .... that's 25 engines that I prepare.
but it's the 3rd in D-Jetronic but all the injection was provided, so I never took care of the N ° ECU and MPS
here as I stopped the competition I wanted to redo a motor Origin but with another power and as I buy at all on Ebay, I realized that the elements did not go together ...
here My shield 044 works well but not the MPS
so I can not see why an MPS 043 could not work!
But we just read all your messages with an English teacher and I just understand everything!
but I'm not going to bother you any longer, I'll try to get by on my own.
A big thanks to all of you !!

this photo is my engine 2.316 cc 167.5 cv with sybèle chalenger 5

LUX PIERRE wrote: 030

means 10/1970

Regards
Norbert

LUX PIERRE wrote: And most important: Does it hold vacuum as described in chapter 4 video?
YES.

i have a lambda inovate 4.9 the top
Did you calibrate the sensor recently? It's not mounted correct and may catch condensate.

at 985 rpm the engine is good but lambda at 68 the normal is 8.0 Normal would be 0.91 to 0.93. Assuming your reading is 0.8 you run very rich if the engine is at operating temperature.

at 2200/2500 no benzine lambda in red. ??

3000/3500 rpm benzine +-ok lambda 7.8 This is also very rich, and far away from normal conditions.
3800 rpm +- benzine lambda 9.5
after 4000 rpm benzine is good What reading do you have here?
and higher up in the RPM full benzine

Would be also important at which engine load you generate the readings above. If in cruise condition, your full load enrichment will not be engaged at 4000 RPM.

how to put pictures?
the number of my MPS is ; 0280100049

hello !! for the lambda you must read 0,x (0,8 /0,95 ..)
yes I tested the vacuum with my device .
yes the goog value is 0.8
à 4000 j'ai +- 0.75
but with a old MPS not the 049 !!

I think I will buy this one at Auto Atlanta
REBUILT PRESSURE SENSOR; 914 1973-76 2.0 - 0280100043
B039906051 - Rebuilt/Reproduction


Price: $275.00

Core: 250.00

Description
Our rebuilt fuel injection components are the highest quality available and replace no longer available parts. Your 914 fuel injection can again operate as it should for snappy performance, great gas mileage, and long engine life. The manifold pressure sensor is notorious for diaphragm failure resulting in a rich mixture black sooty exhaust and a poor warm idle. please evacuate to check this part. if it will not hold vacuum it is bad. rebuilt by the leading Bosch injection company in the nation you can be assured of a perfect calibration. purchase the 037 European sensor for extra top end performance along with the factory temperature sensor resistor. There is a core charge, which is refundable upon receiving your rebuildable part.


www.autoatlanta.com/Porsche-Rebuilt-Pres...s-PN-B039906051.html

This one has been 'refurbished' by the same company:
jetronic.org/de/forum/jetronic/1321-us-r...lung-map-sensors-sdf

Regards
Norbert

- There is one on ebay Germany I think you can trust more <maybe I'm true, maybe I'm not> : www.ebay.de/itm/Druckfuhler-D-Jetronic-V...a:g:yhEAAOSwa1NcpKVI
It has obviously been parted out from the car because the steel sheet is not missing. You have the correct part for a repair in the case it's not o.k.

Hello

but as Volker says it's a 030 !! it might be necessary to find a 037 !!

Auto atlanta is not good ?

here I come to buy it !! but normally he does not deliver in Belgium !!

Hi,
as I wrote before 030 is just a code for the production date. Volker asked for the code because late productions are often faulty. Your unit is early produced, but not the correct fitment.

You need a MPS # 0 280 100 043 (search for 0280100043 ) for the original, not modified engine.

Regards
Norbert