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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.

Non Starting.

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2 weeks 3 days ago #22695 by nordfisch
Replied by nordfisch on topic Non Starting.
Hi Nigel,
this should be a cable issue, maybe at the relay-connector.

Regards
Norbert

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  • Dr-DJet
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2 weeks 3 days ago #22696 by Dr-DJet
Replied by Dr-DJet on topic Non Starting.
Hi Nigel,

if 24 does not receive +12V, injectors will never work. So fuel pump works for 1s when you switch on ignition ? 19 should read 0V for 1 second. 0V activates fuel pump relay.

Viele Schraubergrüße - best regards, Dr-DJet Volker
Alles für den Mercedes-Benz R/C 107 und W116 in der SLpedia Sternzeit 107

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  • Woodways3
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2 weeks 3 days ago #22697 by Woodways3
Replied by Woodways3 on topic Non Starting.
Hi Norbert, I will have another look at the pump relay connections tomorrow. What does OV mean  ? Thank you for your help ,let's hope we can sort this ,Regards Nigel.

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2 weeks 3 days ago #22698 by nordfisch
Replied by nordfisch on topic Non Starting.
OV means 0 Volt

Regards
Norbert

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2 weeks 2 days ago #22699 by Woodways3
Replied by Woodways3 on topic Non Starting.
Hi Norbert,I've checked theconnections to the pump relay and they all look good .Turned on the ignition and both pins on 87 are dead..I've also checked the main relay connections all good and the double clear plastic block connections mounted on the mounting bracket of the top brake servo .RHD cars have two.Im really lost.I drove the car Monday,although it was slow to start and warm up.Regards Nigel.

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2 weeks 2 days ago #22700 by nordfisch
Replied by nordfisch on topic Non Starting.
Hi Nigel,
after 'ignition on' pin 87 of the fuel pump relay will be +12 Volt only for one second.
You have to find out the reason for the voltage on lead 24 is so low.

As Volker described, this is the power source for the injectors and they will not work with such a low voltage.

Regards
Norbert

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