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Old 06-12-2013, 02:35 PM   #1
PQ
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Can a bad oil pressure sensor shut down the car?

So Bonnie went to get us lunch here at the office. While she was driving the oil pressure 'dropped' and had the flashing light and code that said the oil pressure was low and to shut the car off.

The car was running fine. The oil pressure reads low but doesn't seem low. No oil leaking other than the very light oil I get from the rear and that's always been there.

I have had a cel that reads oil pressure sensor. Haven't had the chance to remove the blower and replace the sensor.

The question is .........

Can the sensor being bad shut the car down thinking the oil pressure is that low when it really isn't?
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Old 06-12-2013, 02:52 PM   #2
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No, are you hearing metallic noises?
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Old 06-12-2013, 03:01 PM   #3
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NO noises.
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Old 06-12-2013, 03:03 PM   #4
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Do you have the center console 4 pack gauges? If so, what Oil Presssure reading do you get there?

note: just re-read your post. You said it dropped and then now reads low - that answers my first question. My worry would be how do you know for certain the sensor is bad. If its not the sensor then running it could be disastrous to state the obvious.
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Old 06-12-2013, 03:16 PM   #5
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stock oil pump?
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Old 06-12-2013, 03:19 PM   #6
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Quote:
Originally Posted by SSDan View Post
Do you have the center console 4 pack gauges? If so, what Oil Presssure reading do you get there?

note: just re-read your post. You said it dropped and then now reads low - that answers my first question. My worry would be how do you know for certain the sensor is bad. If its not the sensor then running it could be disastrous to state the obvious.
Pressure on the gauge reads probably around 15 psi.

The sensor has been on the cel for about a month. But has read fine on the gauge.
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Old 06-12-2013, 03:19 PM   #7
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Quote:
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stock oil pump?
Melling high volume.
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Old 06-12-2013, 03:33 PM   #8
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I should ammend the OP.

The car never shut down. Nor did it stutter or do anything at all out of normal.

It just gave the warning.
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Old 06-12-2013, 03:35 PM   #9
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I'd change that sensor ASAP bud.
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Old 06-12-2013, 03:48 PM   #10
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I'd change that sensor ASAP bud.
Oh ya. This weekend.

Just sucks cause I have to pull the supercharger.
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Old 06-12-2013, 03:54 PM   #11
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Bad oil pressure sensor on my truck will put me on the shoulder shut down...

Are you getting a good swing on the needle from idle to rev?
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Old 06-12-2013, 04:16 PM   #12
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replace the pump if it gave you a warning light i think that is nothing to do with sensor what was the presure for the last week weeks when sensor was giving you the cel
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Old 06-12-2013, 04:20 PM   #13
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Quote:
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Bad oil pressure sensor on my truck will put me on the shoulder shut down...

Are you getting a good swing on the needle from idle to rev?
Yes. It does swing up when I rev it.
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Old 06-12-2013, 04:21 PM   #14
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Quote:
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replace the pump if it gave you a warning light i think that is nothing to do with sensor what was the presure for the last week weeks when sensor was giving you the cel
The last month since the cel was coming on it was around 30 psi.
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Old 06-12-2013, 04:29 PM   #15
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What all will I have to pull off to change the pump?
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Old 06-12-2013, 04:32 PM   #16
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As far as the original question, if the ecm didn't shut the motor off, I would assume the Camaro will run with zero pressure.

A sensor, shorted wire or a bad ecm is the only thing that can throw a code, but even if your gauge shows good pressure I'd double check it... AND replace that sensor asap
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Old 06-12-2013, 04:33 PM   #17
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Pulley
Water pump
Timing cover
Pump

But start with the OP sensor if it doesn't change then it's your pump.
What melling is on it? Who installed it?
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Old 06-12-2013, 04:37 PM   #18
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Quote:
Originally Posted by PQ View Post
What all will I have to pull off to change the pump?
Is the gauge showing low pressure? Sorry, I may have missed some info. but if pressure is ok leave the pump alone and replace the sensor

...gauge reads low? or cel reads low?
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Old 06-12-2013, 04:38 PM   #19
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Quote:
Originally Posted by Mr Twisty View Post
As far as the original question, if the ecm didn't shut the motor off, I would assume the Camaro will run with zero pressure.

A sensor, shorted wire or a bad ecm is the only thing that can throw a code, but even if your gauge shows good pressure I'd double check it... AND replace that sensor asap


Quote:
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Pulley
Water pump
Timing cover
Pump

But start with the OP sensor if it doesn't change then it's your pump.
What melling is on it? Who installed it?
Not sure exactly what Melling. High Volume Melling is all the order said.

Vengeance installed it.
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Old 06-12-2013, 08:21 PM   #20
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I got your PM so here is my 2 cents. First things first, do a manual oil pressure test with an external gauge to verify if the oil pressure is actually low or you are just getting a bad reading.

If the pressure is actually low, then it could well be an oil pump or pickup issue. If it is good it could be a simple oil sender issue.

Hope that helps.

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Old 06-12-2013, 08:53 PM   #21
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What is considered "low" oil pressure?....PQ said his was at 15psi.....when my engine is warmed up, my gauge reads 15psi at idle.
*
I've always considered this to be within normal limits. I have a melling as well but have never thrown a CEL.
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Old 06-12-2013, 08:58 PM   #22
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Quote:
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I got your PM so here is my 2 cents. First things first, do a manual oil pressure test with an external gauge to verify if the oil pressure is actually low or you are just getting a bad reading.

If the pressure is actually low, then it could well be an oil pump or pickup issue. If it is good it could be a simple oil sender issue.

Hope that helps.

Mike Norris
That's my plan Mike. Thank you.

Quote:
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What is considered "low" oil pressure?....PQ said his was at 15psi.....when my engine is warmed up, my gauge reads 15psi at idle.
*
I've always considered this to be within normal limits. I have a melling as well but have never thrown a CEL.
Mine is reading as low as 5 psi when hot actually. And around 30 driving on the interstate.
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Old 06-12-2013, 09:20 PM   #23
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Quote:
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That's my plan Mike. Thank you.

Mine is reading as low as 5 psi when hot actually. And around 30 driving on the interstate.
Weird how these things can be so different from one car to the other. I have the Melling Hi-vol pump and even when the oil is at its hottest like today (air temp= 100 degrees) my pressure was at 30 idling and 40+ while cruising. PQ you're overall low numbers would worry me though. I'll think good thoughts and cross my fingers that you have only a bad sensor.
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Old 06-12-2013, 09:25 PM   #24
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Quote:
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Weird how these things can be so different from one car to the other. I have the Melling Hi-vol pump and even when the oil it at its hottest like today (100 degrees) my pressure was at 30 idling and 40+ while cruising. PQ you're overall low numbers would worry me though. I'll think good thoughts and cross my fingers that you have only a bad sensor.
My oil temp stays over 230 degrees on a hot day.

Don't have an oil pressure gauge and all the parts stores are closed now. I'll do it Friday. I'll have to work all day tomorrow and I bowl after at 7.

Bad thing is Bonnies Differential is grinding again and will need replacing soon. Ugh.............
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Old 06-12-2013, 09:44 PM   #25
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Quote:
Originally Posted by PQ View Post
My oil temp stays over 230 degrees on a hot day.

Don't have an oil pressure gauge and all the parts stores are closed now. I'll do it Friday. I'll have to work all day tomorrow and I bowl after at 7.

Bad thing is Bonnies Differential is grinding again and will need replacing soon. Ugh.............
A fellow Thursday night bowler. Anything that happens on thursday.... "ain't nobody got no time for that!"

On topic though... you might see if you can rent/borrow a mechanical gauge to check things with from the auto parts store just to make sure everything is ok for real. You might be able to turn the light off with a new sensor, but you'll sleep better at night having actually verified that your pressure is fine.
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