Should have checked here first .
03-08-2017, 08:23 PM
#1
Race Director
Thread Starter
Should have checked here first .
My oil,pressure gauge is pegged and I suspected a failed sensor. I've always assumed the sensor behind the intake manifold was the one that drove the gauge.
So, I bounce over to my local Chev dealer to buy a new sensor and the counter guy insists that the gauge is driven by the cylinder head sensor.
Being a gullible moron, I believed him and bought the sensor. Inasmuch as my car has a FlipDrive, getting to the sensor was more involved than a stock set up, but a whole lot easier that replacing the rear sensor.
Anyway, spend a few hours this afternoon replacing the cylinder head sensor, and the gauge is still,pegged.
So, my question is....
1. Was I correct the first time and the right sensor is the rear one.
2. If #1 is correct, should I go back to the dealer and **** on the parts counter.
So, I bounce over to my local Chev dealer to buy a new sensor and the counter guy insists that the gauge is driven by the cylinder head sensor.
Being a gullible moron, I believed him and bought the sensor. Inasmuch as my car has a FlipDrive, getting to the sensor was more involved than a stock set up, but a whole lot easier that replacing the rear sensor.
Anyway, spend a few hours this afternoon replacing the cylinder head sensor, and the gauge is still,pegged.
So, my question is....
1. Was I correct the first time and the right sensor is the rear one.
2. If #1 is correct, should I go back to the dealer and **** on the parts counter.
03-08-2017, 09:13 PM
#2
Race Director
Member Since: May 2004
Location: Raleigh, NC
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St. Jude Donor '15
The parts guy is an idiot
The sensor you need to change is behind the intake manifold
On factory intake it can be done with the intake on but puling intake doesn't take long so it's not bad either way.
Don't over torque the sensor or intake bolts
The sensor you need to change is behind the intake manifold
On factory intake it can be done with the intake on but puling intake doesn't take long so it's not bad either way.
Don't over torque the sensor or intake bolts
Last edited by schpenxel; 03-08-2017 at 09:14 PM.
03-09-2017, 10:28 AM
#3
Team Owner
What cylinder head sensor? The coolant temp sensor? That is the only sensor threaded into the cylinder heads.
03-15-2017, 08:42 PM
#4
Race Director
Thread Starter
When I removed the cylinder head sensor, a small amount of oil trickled out, so it is definitely an oil pressure sensor.
But, it doesn't fix a pegged gauge !!
03-16-2017, 04:42 PM
#5
Race Director
Member Since: May 2004
Location: Raleigh, NC
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St. Jude Donor '15
I'm not really sure what sensor it could be that you replaced to be honest. I'm almost sure the oil pressure is fed to the ECM from the sending unit behind the intake then the data is sent out over the CAN bus for the gauge to read.
Last edited by schpenxel; 03-16-2017 at 04:46 PM.
03-16-2017, 11:33 PM
#6
Burning Brakes
The parts counter idiot at the stealership said the one behind the intake spoke to the ECM and the cylinder head sensor spoke to the gauge.
When I removed the cylinder head sensor, a small amount of oil trickled out, so it is definitely an oil pressure sensor.
But, it doesn't fix a pegged gauge !!
When I removed the cylinder head sensor, a small amount of oil trickled out, so it is definitely an oil pressure sensor.
But, it doesn't fix a pegged gauge !!
03-17-2017, 08:53 AM
#7
Drifting
I know someone that actually loosened the 4 cradle bolts to drop the cradle and engine to make room to get to the oil sensor. I believe it includes dropping the shocks or dropping the upper A arm too as the spring keeps the cradle up unless one of those is dropped. Not a suggestion, just sharing.
