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'84 - '86 Euro owners beware

Old 07-26-2018, 06:57 AM
  #31  
Porsche928EU
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Hello, please don┤t you know the minimum values of EU injector 0280150252 to work well, I have tested them - 12ms/600 speed (9-10ml), 36ms/1666 speed (60-65ml),static 118-123ml. The engine hesitate especialy between 1500 - 2500 rpm and ewerithing is new except for the injectors.

Thanks

David
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Old 07-26-2018, 07:15 AM
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John Speake
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Is the MAF OK ?
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Old 07-26-2018, 08:12 AM
  #33  
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Originally Posted by John Speake View Post
Is the MAF OK ?
Hi John, yes it is, all sensors, ingnation cabels, sparks, compresion measured etc. even we changed control unit from another car, The injectors was cleaned with ultrasonic cleanerand and tested, but only the injectors was not replaced from another car and I can not find any details of value of injectors to work right on internet and in Porsche manual.
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Old 07-26-2018, 02:25 PM
  #34  
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If you unplug the MAF and force the LH ECU into limp home mode, then the following from my website gives approximate injector opening times :-
Q - What is the "limp home" programme ?

A - This is a programme within the LH brain, which allows you to drive the car home or to a workshop, even if the MAF fails. It gives two pre-set fuel injector opening times- 3.5milliseconds when the engine speed is less than 2000rpm, and 6.3mS. when the engine speed is greater than 2000rpm. Because this is a crude approximation to the constantly variable correct injector settings, the mixture will only be correct at two points. At other throttle openings the car will run rich or lean, but it's good enough to drive the car with care.




Originally Posted by Porsche928EU View Post
Hi John, yes it is, all sensors, ingnation cabels, sparks, compresion measured etc. even we changed control unit from another car, The injectors was cleaned with ultrasonic cleanerand and tested, but only the injectors was not replaced from another car and I can not find any details of value of injectors to work right on internet and in Porsche manual.



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Old 08-10-2018, 01:03 PM
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Hi John, I appreciate your help, would you be so good to send the link for approximate injector opening.

Thanks

David
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Old 08-10-2018, 02:21 PM
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Originally Posted by Porsche928EU View Post
Hi John, I appreciate your help, would you be so good to send the link for approximate injector opening.

Thanks

David
In the WSM Vol 1A Page D24-16 This specifically for the S4 and later, but the LH2.2 has the same program.
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Old 09-05-2018, 11:08 AM
  #37  
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Hi John, would you be so good and send link I did not find it.

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David
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Old 09-05-2018, 02:53 PM
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Originally Posted by Porsche928EU View Post
Hi John, would you be so good and send link I did not find it.

Thanks

David
There isn't a link, you need to obtain the workshop manual CD from Roger at 928sRus, then use the reference I quoted.
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