[Diy_efi] Bosch L-Jetronic Trouble

[Allyn]

Mike,
    i believe that when l-jetronic goes post-start, it shifts over to more of a
temperature/o2 sensor kind of thing. what confuses me is that yours is dying
completely, which i wouldnt expect from those types of failures. for your
failure, im leaning towards some kind of temperature sensitive
electrical/ignition type of failure.
    i've got some other bosch books around here, if you need any more help, drop
me a line.
hth
Al

----- Original Message -----
From: "Mike Sharp" <Mike_Sharp at pacbell.net>
To: <diy_efi at diy-efi.org>
Sent: Friday, October 25, 2002 10:25 PM
Subject: [Diy_efi] Bosch L-Jetronic Trouble


> Hi,
>
> Where to look??
>
> I've got an '87 Porsche 924S that starts fine, makes it through
> post-start (starts, runs at idle, accelerates normally, its even drives
> normally during this period) and then dies immediately.  It stops just
> like you switched the key off.  It doesn't stumble, accelerate, or
> anything else.  It just dies immediately.
>
> I don't know if this is particularly indicative of anything.  The
> manuals I've got (Bosche Fuel Injection & Engine Management by Probst,
> and the Porsche factory manuals) don't do a very good job of trouble
> shooting by symptom.  They pretty much say 'check everything'.
>
> Once off of post-start what is the primary control input for the pulsed
> injection?
>
> I'll be taking everything to pieces tomorrow, but any insight into where
> to look first would be appreciated.
>
>    Thanks,
>
>         --Mike
>
>
>
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