Saabscene Saab Forum - Saab Technical Information Resource banner
1 - 6 of 6 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter · #1 ·
Can I tell if the DI unit is working without hooking it to plugs and grounding them? Is a broken unit always leaking oil?
The starter will turn, but the car won't start. Had worked perfectly fine until I tried to start the car in the morning. Likely to be the DI unit?
 

·
Registered
Joined
·
14,305 Posts
There's no way I'm aware of that you can test the DI with any sort of "passive" measurement. Main dealers have a special set of dummy plugs and lead that they can put it the cartridge to see if it is sparking.

Leaking oil is a good indication of likely or impending failure, but this is really more prevalent on the early (pre 92ish IIRC) models.

Other possibilities for non- starting are a faulty alarm/immobiliser if fitted, faulty carnkshaft position sensor or fuel supply- can you hear the fuel pump running?
 

·
Registered
Joined
·
198 Posts
I've just experienced a simila problem with my MY 2000 9-3. I cranks but won't fire. It coincides with the fact that I'd just removed the hands free phone kit....
When I switch on the ignition the fuel pump make a clunk. After cranking I can smell fuel from the tailpipe.
I found the radio/diagnostics fuse to be blown (although the radio worked and the SID seemed to work).
So, is it the immobilizer (it's not fitted with a remote or alarm) or the DI cassette?
 

·
Registered
Joined
·
1,908 Posts
Easiest test is to swap unit out with a known good donor unit from a fellow Saab driver or specialists.

If you turn engine over with DI Pack connected to wiring loom but any spart plug disconnected - it will blow the DI unit up.
 

·
Registered
Joined
·
14 Posts
Discussion Starter · #6 ·
In answer to my own question, the faulty DI cassette can look completely fine with no oil leak. In fact, my cassette looked new compared to the used working unit I replaced it with.
 
1 - 6 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top