2021 Camaro SS Engine Oil Pressure Sensor

[dhickmanii]

I just wanted document my experience changing the Engine Oil Pressure Sensor (EOPS). It was simple, so I want to encourage anyone that might need to make this repair to do it themselves. There are also a few unexpected things that I’ll consolidate here. They are explained elsewhere, but not all in one place.

1. EOPS is located behind the intake manifold. You will notice an electrical connector accessible between the intake manifold and the firewall when standing on the driver’s side of the car.

2. Electrical connector has a 3 step disengagement process. First, pull the white button guard axially. A similar white guard can be found on the Mass Air Flow sensor. Since you will probably be doing this blind, it’s a good idea to take a look at that. Once the white guard has moved, you can push the button on the connector, which is normal. Finally, you can pull off the connector.

3. I used this special socket for the job. $10.99 at Autozone.
https://www.autozone.com/test-scan-a...ket/141490_0_0

Slip the socket over the old sensor first, then attached the 1/2” drive ratchet. There is a little extra room in the firewall direction for the ratchet handle to move. Finer tooth ratchets work better for this.

4. Loosen and remove the old sensor.

5. There is a filter screen below the sensor. I was in a parking lot when I made this repair, so I didn’t bother changing that part. It worked out. If you have 0 psi on your oil gauge, that screen is probably not your problem.

6. Installation is reverse of removal.
I used an AC Delco replacement.
https://www.autozone.com/external-en...134/921102_0_0

7. **IMPORTANT**. Once the repair is complete and you need to know if your oil pressure is back, you’ll obviously want to look at the oil gauge while cranking the car. I pulled my ignition fuses INJ, EVEN and INJ, ODD just in case. The key is you must clear the trouble codes before the oil gauge will work. Otherwise, it will read 0 psi and it will look like your oil pump is shot. Clear the codes first.

Good Luck! This is a 10 minute project, in a parking lot, with one tool. Nothing to be scared of.

David
2012 Camaro 2SS 45th Anniversary Edition
Mobile, AL

[NOT A 45]

Originally Posted by dhickmanii

I just wanted document my experience changing the Engine Oil Pressure Sensor (EOPS). It was simple, so I want to encourage anyone that might need to make this repair to do it themselves. There are also a few unexpected things that I’ll consolidate here. They are explained elsewhere, but not all in one place.

1. EOPS is located behind the intake manifold. You will notice an electrical connector accessible between the intake manifold and the firewall when standing on the driver’s side of the car.

2. Electrical connector has a 3 step disengagement process. First, pull the white button guard axially. A similar white guard can be found on the Mass Air Flow sensor. Since you will probably be doing this blind, it’s a good idea to take a look at that. Once the white guard has moved, you can push the button on the connector, which is normal. Finally, you can pull off the connector.

3. I used this special socket for the job. $10.99 at Autozone.
https://www.autozone.com/test-scan-a...ket/141490_0_0

Slip the socket over the old sensor first, then attached the 1/2” drive ratchet. There is a little extra room in the firewall direction for the ratchet handle to move. Finer tooth ratchets work better for this.

4. Loosen and remove the old sensor.

5. There is a filter screen below the sensor. I was in a parking lot when I made this repair, so I didn’t bother changing that part. It worked out. If you have 0 psi on your oil gauge, that screen is probably not your problem.

6. Installation is reverse of removal.
I used an AC Delco replacement.
https://www.autozone.com/external-en...134/921102_0_0

7. **IMPORTANT**. Once the repair is complete and you need to know if your oil pressure is back, you’ll obviously want to look at the oil gauge while cranking the car. I pulled my ignition fuses INJ, EVEN and INJ, ODD just in case. The key is you must clear the trouble codes before the oil gauge will work. Otherwise, it will read 0 psi and it will look like your oil pump is shot. Clear the codes first.

Good Luck! This is a 10 minute project, in a parking lot, with one tool. Nothing to be scared of.

David
2012 Camaro 2SS 45th Anniversary Edition
Mobile, AL

Only the AFM cars have the filter screen, it's there to protect the solenoids in the VLOM. That screen if clogged or partially clogged can cause zero oil pressure as well as oil pressure that starts normal then falls to zero when warm. After having a few cars come back because I didn't replace the screen, I now replace them whenever I replace the sensor....they're cheap! Easy way to remove it is with a 8mmx50mm bolt. Just screw it in a turn or 2 and pull. Same to reinstall.

[dhickmanii]

Just curious. When you remove those clogged screens, what are they logged with?

[NOT A 45]

Originally Posted by dhickmanii

Just curious. When you remove those clogged screens, what are they logged with?

Looks like baked oil soot....kinda like you see in the bottom of a oil pan. That screen is so fine it doesn't take much