Three dashboard lights popping up

Tiny
MKOO
  • MEMBER
  • 2006 FIAT STILO
  • 1.8L
  • 4 CYL
  • 2WD
  • MANUAL
  • 130,000 MILES
Three warning lights (check engine, oil, battery) come up simultaneously within zero to five miles from starting point while driving with stone cold engine.

One hundred percent of the times those said lights come up when I am at intersection so speed at zero when the the lights come on.

The car tells to shut itself down when the said lights are on.

After that I restart car and the lights are again off and usually I am good to drive to the destination without those lights ever coming up again during that trip.

Roughly fifty to sixty percent of the time these lights come up when I start driving with stone cold engine and usually I have to shut down and start car at least once, or even twice per journey.

What I have checked and confirmed that the fault is not in: Battery, oil level. No fault codes either.

Any suggestions where to look next? Is it dangerous to keep driving?
Sunday, October 15th, 2017 AT 11:10 PM

6 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check alternator charge rate. How did you check the battery? Did you do a load test? Does it hold a good idle or is idle low and erratic when lights come on?
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Sunday, October 15th, 2017 AT 11:12 PM
Tiny
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Battery has been tested by authorized automobile repair shop, which also includes alternator testing and that the battery also charges while under load. I have not paid attention to how car behaves when the lights come on as I have always just shut down and restarted the engine. I will check that next time this happens.
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Sunday, October 15th, 2017 AT 11:33 PM
Tiny
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Okay, do that and post your findings.
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Monday, October 16th, 2017 AT 1:23 AM
Tiny
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  • 5 POSTS
Results of testing: engine shuts itself down immediately sometimes and sometimes I can just keep driving. Idle is normal and steady. There does not seem to be a noticeable power loss while driving with the warning lights on.
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Tuesday, October 17th, 2017 AT 1:04 AM
Tiny
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  • MECHANIC
  • 31,937 POSTS
I would suspect an intermittent alternator or voltage regulator fault at this time.
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Tuesday, October 17th, 2017 AT 3:15 AM
Tiny
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Those also were tested along with the extensive battery test, so it cannot be anything charging related. Authorized Fiat dealership mechanic suspected that it could be either oil pressure sensor or camshaft position sensor, although the latter one's symptoms are much more severe to what I am experiencing.
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Wednesday, October 18th, 2017 AT 2:23 PM

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