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Die Bosch D-Jetronic war 1967 die erste Großserien elektronische Einspritzung der Welt. - Bosch's D-Jetronic was the first mass-production electronic fuel injection.

Porsche 2.0 Start but Stalls

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4 Jahre 9 Monate her - 4 Jahre 9 Monate her #14614 von Erikkraft
Porsche 2.0 Start but Stalls wurde erstellt von Erikkraft
Good Day,

Our Porsche 2.0 USA with a D-Jetronic system starts but stalls inmediatly.
This problem is allready keeping me busy for few weekends and i dont have any more ideas.
i am stuck at this moment.

This are the things i have allready look through with the help of this website.

Measured the whole wiringloom.
12V on pin 16 and 24, power supply.
12V pin 18, start signal
Air temperatuur sensor 378 Ohm
Engine temperatuur sensor 2,8 KOhm

Throttlevalve 10 steps 0 Ohm, stationair checked

Injectors
Pin 3 3,2 Ohm
Pin 4 3,7 Ohm
Pin 5 3,0 Ohm
Pin 6 3,6 Ohm

MAP sensor
Pin 7 - Pin 15, 90 Ohm
Pin 7 - ground, Open
Pin 8 - Pin 10, 330 Ohm
Pin 8 - ground, Open
Vacuum 100%

Engine starts but stalls inmediatly.
when i take of the MAP sensor vacuumhose and plug of the manifold, the engine starts and runs.
Put back the MAP sensor vacuumhose, the engine stops inmediatly.

is it possible that there is a problem with the ECU.

Type ECU 280 000 044
Type MAP sensor 280 100 043

With kind regards

Erik
Letzte Änderung: 4 Jahre 9 Monate her von Erikkraft. Begründung: i was not ready

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4 Jahre 9 Monate her #14617 von Michi68
Michi68 antwortete auf Porsche 2.0 Start but Stalls
Hello Erik,
did you check the fuel pressure? Greetings Michi

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4 Jahre 9 Monate her #14618 von Erikkraft
Erikkraft antwortete auf Porsche 2.0 Start but Stalls
Michi

Yes i checked the fuel pressure it is 2 Bar.

Erik

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4 Jahre 9 Monate her - 4 Jahre 9 Monate her #14620 von Marc_Voss
Marc_Voss antwortete auf Porsche 2.0 Start but Stalls
Hi Erik,

did you also checked the Auxiliary Air Regulator / the hose ?
If it is closed or the engine don‘t get additonal air while it is cold, it won‘t run very well or it will stop. So, if you disconnect the hose to the AAR, what will happen ?

Best Regards,
Marc
(I just tried that at my VW 411, which is not much different)
Letzte Änderung: 4 Jahre 9 Monate her von Marc_Voss.
Folgende Benutzer bedankten sich: Erikkraft

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4 Jahre 9 Monate her #14621 von nordfisch
nordfisch antwortete auf Porsche 2.0 Start but Stalls
Hi Eric,
when does the engine stall?

While the starter turns, the D-Jetronic injects without getting the trigger signals.

When you release the key to 'ignition on' position, the trigger signals are needed to keep the engine running.

Therefore: please tell us more about the conditions the engine runs/stalls.

Regards
Norbert
Folgende Benutzer bedankten sich: Erikkraft

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4 Jahre 9 Monate her #14623 von Erikkraft
Erikkraft antwortete auf Porsche 2.0 Start but Stalls
Hi Norbert,

The engine stalls when the key gets back in the ignition on position.

I think that that the trigger signals are oke because the engine runs beautiful stationair when there is no vacuum connect at the MAP Sensor.

This is also the reason that i am stuck at this moment or am i thinking in the wrong direction.

Regards
Erik

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