Locked engine

Tiny
DONNNA62
  • MEMBER
  • 2003 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
The oil light came on, on my chevy implana. My daughter drove without oil car went dead. Will not turn over. Someone said there was a saftey on some cars that would stop the car before motor totally locked up. Is this true? Would this auto have this? 2003 chevy implana
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Wednesday, April 13th, 2011 AT 5:45 PM

8 Replies

Tiny
WRENCHTECH
  • EXPERT
No, that is not true. If it locked up from lack of oil, the motor is history now.
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Wednesday, April 13th, 2011 AT 5:53 PM
Tiny
DWB812
  • MEMBER
What that "someone" was refering to is a low oil sensor that shuts the ignition down. The only way to check if it's a possibility is to try and turn the crankshaft mannually. I would remove all the spark plugs and try and rotate the crankshaft. If the engine turns by hand it isn't seized up from lack of oil. It is a slim chance given your description but worth a try. If it does not turn by hand with the spark plugs removed it is seized and, as Wrenchtech said, history. Hope this helps.
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Wednesday, April 13th, 2011 AT 10:15 PM
Tiny
WRENCHTECH
  • EXPERT
There is nothing in a GM vehicle that shuts the engine down due to low oil pressure.
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Wednesday, April 13th, 2011 AT 10:17 PM
Tiny
CHEVYNOVA1988
  • MEMBER
Would be nice, if someone could invent a low oil pressure sensor
engine shutdown.
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Thursday, April 14th, 2011 AT 2:44 AM
Tiny
WRENCHTECH
  • EXPERT
There would be nothing to invent. It would be just a matter of wiring and software updates but they have chosen not to do that as it would be very dangerous for a car to shut down unexpectedly.
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Thursday, April 14th, 2011 AT 2:46 AM
Tiny
DWB812
  • MEMBER
I guess I wasn't real clear. I did not mean to imply there was such a low oil shut down on the vehicle. I only meant to say that the ony way to be sure the engine was (or was not) seized is to use the method I described. For the record there are some small engines for lawn tractors and the like that do have a low oil shut off that is a simple ground circuit that is interupted if the oil reservoir drops to an unsafe level. This is where some people get the idea all engines have it. Sorry if I was misunderstood.

As far as implimentation, it would not be hard (as Wrenchtech indicated) for them to wire in a warning that gave a short amount of time to bring the vehicle to a safe stop when a severley low oil condition indicated. Most engines would be able to withstand even a brief low oil pressure condition over a no oil pressure condition. Repair/replacement revenues are the most likely reason the effort has not been made to develope this further.
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Tuesday, April 19th, 2011 AT 7:56 AM
Tiny
WRENCHTECH
  • EXPERT
I'm afraid there is no safe way to shut a car engine down while someone is driving it and that is why you will never see that on a motor vehicle. This isn't your lawn mower in the back yard and people's lives are at stake. The manufacturer can install warning systems which they already do but that is the extend of control that they can safely take. The rest is up to the driver.
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Tuesday, April 19th, 2011 AT 12:58 PM
Tiny
CHEVYNOVA1988
  • MEMBER
Okay, thanks for the information. It pays to check the oil on regular bases. All the car fluids for that matter.
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Thursday, April 21st, 2011 AT 2:36 AM

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