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Old 03-24-2019, 08:05 AM   #1
Odds are 50/50
 
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2000 986S electrics

Long story short.
Last fall on a drive, engine died. All lights on dash on.
Towed it home and found the fuse for the DME and Immobilizer blew.
Replaced and restarted. Idled without issue for 5 minutes or so.
During the test drive it was fine until 3-4K RPM. Above that the fuse popped.
New fuse and got it home.
Cleaned and reseated every connector I could get to, including DME, Immobilizer and all engine sensors. MAF sensor and intake was spotless.
Next test drive it still was ok under 3-4K RPM, but this time the engine cut out momentarily and CEL flashed, but returned to normal under said RPM.
back in the garage, I missed the oil temp sensor on top of the engine. That sensor connector was covered in oily road grime. Cleaned and reseated that connector.
The test drive was fine, drove it like a red headed step child, bounced it off of reline a couple of times without drama.
The went into storage for winter.

After studying the schemo, I am not convinced electrically that could draw more than 25 amps, or could it?
I do have a Durametric on order, so would some indication on what happen show up?

Thanks!
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Old 03-25-2019, 05:58 AM   #2
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I wonder whether it is a bad voltage regulator. Put a voltmeter on the battery terminals and rev the engine up. Shouldn't get more than a hair over 14 V.

Long shot, but worth a try.
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Old 03-25-2019, 02:12 PM   #3
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Thanks Anker, I pretty sure I did that last fall, but will recheck.
The Durametric should be here in a couple of days.
My plan is to read codes and see what is in there. Clear them and run the car for a bit and recheck.

I will report any findings....
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Old 04-02-2019, 02:54 PM   #4
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OK, ran the Durametric and found these codes:

Engine Module
P0150= O2 sensor, pre cat. cylinder (4-6)

Airbag
Supply low
Airbag warning light

Alarm l32
21=Control Unit Failure
60=Status Not present
33=W lead DME Mobilizer
Status= Not Present

These Alarms stated info only- No Repair Needed

Xenon (car does have Litronics???)
Engine Path Left
Engine Path Right
Axle Position Sensor

What is Alarm l32?

Any other info on these would be welcome

Thanks!
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Old 04-12-2019, 04:11 AM   #5
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All codes were cleared and the long drive had no dramas, nice high 60's day and good to be out!

Alarm codes as far I can find out;
21 = No engine start possible--------Makes sense, I didn't have the clutch in!
33 = No passenger compartment monitoring---Passenger monitoring sensor bad.
60 = Still don't know what status isn't present.

The big thing is the airbag and O2 errors did not come back.
I guess I did fix it
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