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Could it be a ECM problem

Tiny
EJB205
  • MEMBER
  • 1998 SAAB 900
  • 2.3L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 160,000 MILES
Driving along all the dash lights come on and kill the engine.
Tuesday, September 6th, 2016 AT 6:57 PM

7 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Without a lot more information, observations, or test results to analyze, your best bet is to have the charging system tested. If the problem is intermittent, the testing has to be done while it is occurring. Computers are sensitive to low system voltage and will do weird things. If they shut down, they will turn on their warning lights to tell you.
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Tuesday, September 6th, 2016 AT 7:06 PM
Tiny
EJB205
  • MEMBER
  • 6 POSTS
Just today driving my saab 900 s the gearbox light lid up and the car lost speed and power
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Wednesday, September 7th, 2016 AT 6:56 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Did you have the charging system tested?
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+1
Wednesday, September 7th, 2016 AT 8:25 PM
Tiny
EJB205
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  • 6 POSTS
Battery and alternator check fine
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Thursday, September 8th, 2016 AT 7:34 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Was the problem occurring while the tests were being performed? If not, the tests have no value. If it was occurring, what did the mechanic have to suggest?
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Thursday, September 8th, 2016 AT 9:04 PM
Tiny
EJB205
  • MEMBER
  • 6 POSTS
The battery and altenator check out fine computer codes showing 2 o2 sensor codes and a system voltage malfuction code taking when my car stalled with a check gear box light on.
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Sunday, September 11th, 2016 AT 9:59 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
You aren't telling me anything I can use. I need specific charging system test results to analyze. That means specific numbers while the problem is occurring. "Tests okay" is not something I can analyze. Those numbers are especially important in light of any fault code related to low system voltage.
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Sunday, September 11th, 2016 AT 6:22 PM

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