Bad CAS symptoms

[zoomzoom]

Bad CAS symptoms

My Stagea has totally died. Firstly I had a few instances of the engine randomly dying, just like fuel cut on an ECU. It happened a few times under acceleration, a few times while sitting at idle, and a few times while cruising.

I had the chance to capture the glitches on my adaptronic 440. It was not a overboost cut, nor a leanout protection cut. There are discontinuities in the crank interval right when it dies, ie just before the revs drop the crank interval shoots up from a few ms to 10's or 100's of ms.

Now it wont start at all. Before it totally died, it looked like it was going to crank over, but spluttered out several times (all with erratic crank interval data).

Before I try replacing the CAS, what are the best ways to test it? Or perhaps the wiring to the CAS?

[Duncan]

if you take the cas out and spin the shaft with the ignition on, do you get rpm on the adaptronic, and injectors clicking? that's the easy place to start

[r33cruiser]

Ouch buddy, sounds identical to the problem that plagued my car 4 or so years ago.

Randomly dies when idling, doesn't start up again even with a fresh battery etc, has plenty of fuel and spark plugs are fine, but still no joy.

I replaced my S1 rb25 CAS for the CAS in the neo engine and I haven't had a problem since.

You probably don't need to upgrade the CAS like I did though, standard replacement should be fine.

[Dose Pipe Sutututu]

Did you update the firmware on your ECU and then re-selected the trigger settings again? because there's something funny with the new Eugene software that screws up everything.

If that's the case, download your map, save it.

Load up a base map from the install directory, then re-import your fuel/ignition map and manually change all the other values such as injector scaling, idle control settings, cold start, IAT compensation, etc.

Tedious process, but I had the same issues with 2x cars already.

 

It's weird the trigger settings originally would say R33 RB25DET blah blah.. then you upgrade the firmware, move onto Eugene and now your trigger settings say "custom", when trying to change it back to what it's supposed to be.. boom car won't start.

[zoomzoom]

Thanks guys. Power to the sensor was good. I turned it manually and it didn't work at first, then it did, so I bit the bullet and purchased a new one. Price tag is ouchy.

By the way I tried the earlier Eugene software, but only on the desktop and never connected it to the car. I actually like the Windows 98 interface of WARI.