•  
    Page 1 of 2 12 LastLast
    Results 1 to 10 of 12

    Thread: How to: Change Oil Pressure Sending Unit / Switch

    1. #1
      What do you mean there's no turbo?
      Join Date
      Jun 2014
      Location
      Long Island, NY
      Posts
      308
      Thanks
      0
      Thanked 50 Times in 48 Posts

      How to: Change Oil Pressure Sending Unit / Switch

      How to: Change Oil Pressure Sending Unit / Oil Pressure Switch

      Recently, while at a hot idle, the oil pressure light on my dash began to flicker. Being that my car was recently bought, is almost 10 years old, and is a tad of 98k miles, I did an oil change. This was the first oil change done under my ownership. The top end of the engine was rebuilt when I bought it at 96k miles and the bottom ended has no unusual noises.

      However, I experienced the same results after an oil change, so this led me to believe that the oil pressure switch / sending unit maybe the culprit. AND IT WAS. So here is a little write-up for you guys before I forget certain stuff.

      1. Raise car with jack or place on ramps. If using a jack, please use jack stands. Always use parking brake and wheel chocks.
      2. OPTIONAL Remove splash shield on passenger side, front tire wheel well (10mm socket needed). (Personally, I placed the car on ramps and removed the shield from under the car without removing the tire. If you raise the car with a jack, you are better off removing the front tire. You can change sensor without removing the splash shield, but it just makes it easier in my opinion.
      3. Locate the switch on the rear of the engine block, just above the oil pan. The switch will be on the block nearest to the P/S tire. Remove electrical connector. See attached picture. Switch is circled in red (photo is not mine, credit is due to member "Daox")
      4. Remove switch from engine block by rotating counter clockwise with a 15/16" open-ended wrench. A small amount of oil will spill out, so have an oil pan or container at the ready. An open ended wrench or specifically made oil switch socket is need as the electrical connector on the switch will not allow a regular socket or deep socket to fully seat.
      5. Replace with new oil switch. I used a Duralast #PS437 from Autozone. Apply a small amount of RTV gasket maker to the threads and thread new switch into block with hands-only first. After it is hand tight, using a wrench, give it another 1/4 - 1/2 turn or until you feel resistance. Reconnect electrical connector.
      6. Start car and let it run for a few minutes. Look to see that switch is secured and that no oil is leaking.
      7. Re-install splash shield, lower car, have a beer.

      Experience level: Very easy, easy, medium, hard, very hard
      Approx time: Start to finish 10-20 min
      Tools needed: Socket wrench, 10mm socket, open ended 15/16" wrench, RTV gasket maker

      View image below for location of oil pressure switch.

      Name:  aveo043.JPG
Views: 42634
Size:  190.3 KB

      If you have any questions, feel free to post in the thread or PM me.


      Last edited by slayerized6; 11-21-2016 at 04:00 PM. Reason: update

    2. The Following User Says Thank You to slayerized6 For This Useful Post:

      EyeintheSky (04-17-2018)

    3. #2
      What do you mean there's no turbo?
      Join Date
      Jun 2014
      Location
      Long Island, NY
      Posts
      308
      Thanks
      0
      Thanked 50 Times in 48 Posts
      PS- from my limited experiences on AveoFoum, I see that many people on this site are not mechanically inclined, especially compared to other boards I am on such as Jeepforum, LS1Tech, FastLSX, etc. For a job like this, you can buy the tools yourself and do the job yourself in your own driveway and it will still be cheaper than dropping it off at a repair shop. Do this a few times with other jobs, and instead of paying your mechanic, you in turn build yourself a decent collection of tools that can be used for an assortment of things.

    4. The Following User Says Thank You to slayerized6 For This Useful Post:

      RacerX (09-27-2016)

    5. #3
      What do you mean there's no turbo? PoisonIvy's Avatar
      Join Date
      Mar 2013
      Location
      Canada
      Posts
      393
      Thanks
      10
      Thanked 56 Times in 49 Posts
      That's a great write-up! Thanks! Aveoforum could use more of these. Agreed on doing some of these items yourself. It's crazy how this $10 part would somehow end up costing you $200 if you took it in.

    6. #4
      Administrator Daox's Avatar
      Join Date
      Jan 2007
      Location
      Wisconsin
      Posts
      2,523
      Thanks
      172
      Thanked 92 Times in 80 Posts
      Great write up.

    7. #5
      What's wrong with my car?
      Join Date
      Aug 2016
      Location
      MA
      Posts
      2
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts
      Thank you for that information, I am not sure what year that was for but the engine in my 09 Aveo LT has the oil pressure switch in the front of the engine.

    8. #6
      What's wrong with my car?
      Join Date
      Feb 2017
      Location
      US
      Posts
      10
      Garage empty: add car
      Thanks
      0
      Thanked 1 Time in 1 Post
      Quote Originally Posted by lenty View Post
      Thank you for that information, I am not sure what year that was for but the engine in my 09 Aveo LT has the oil pressure switch in the front of the engine.
      Where at in the front? I've been looking all over.

      Sent from my XT1254 using Tapatalk

    9. #7
      What's wrong with my car?
      Join Date
      May 2017
      Location
      Michigan
      Posts
      2
      Thanks
      0
      Thanked 0 Times in 0 Posts
      Do you think it's possible to T off of this spot. Have the idiot light on one side and run a machanical pressure gauge out the other side.

    10. #8
      What's wrong with my car?
      Join Date
      Feb 2017
      Location
      US
      Posts
      10
      Garage empty: add car
      Thanks
      0
      Thanked 1 Time in 1 Post
      Quote Originally Posted by lenty View Post
      Thank you for that information, I am not sure what year that was for but the engine in my 09 Aveo LT has the oil pressure switch in the front of the engine.
      I found my switch...finally in the front just line you said. Now...what needs to come off to get to it? Have you replaced yours?

      Sent from my XT1254 using Tapatalk

    11. #9
      What's wrong with my car?
      Join Date
      Feb 2017
      Location
      US
      Posts
      10
      Garage empty: add car
      Thanks
      0
      Thanked 1 Time in 1 Post
      I'm new at this forum. Maybe if I use "quick reply" kind of looking for some help now!!

      Sent from my XT1254 using Tapatalk

    12. #10
      What's wrong with my car?
      Join Date
      Oct 2017
      Location
      California
      Posts
      2
      Thanks
      0
      Thanked 0 Times in 0 Posts
      This post was really helpful. My 09 was a little more difficult to change than just simply disconnecting the sensor wire and removing the old unit. With the unit being on the front of the engine you have to be a little more mechanically inclined. In my case we had to remove the AC compressor unit to access my sensor. Not terribly hard but its not for the amateur first timer. After that i just followed the steps outlined in the original post. Hope this helps. Tools needed: 12mm DEEP socket and a 12in or longer ratchet for the AC unit. 14mm box end for the tensioner to remove the belt. 10mm socket for the undercarriage shield. 15/16th open end wrench for the sensor. Oil pressure sensor ran me $23 at autozone. Gasket maker $6 at Walmart.





    Page 1 of 2 12 LastLast

    Similar Threads

    1. Location of the Oil Sending unit
      By mpk4463 in forum Troubleshooting and Maintenance
      Replies: 4
      Last Post: 08-26-2014, 07:35 PM
    2. Oil Pressure Sending Unit blew out
      By middleofnowhere in forum Engine & Drivetrain
      Replies: 0
      Last Post: 06-21-2013, 12:34 AM
    3. Disabled oil pressure sending unit
      By HeavyDuty in forum Troubleshooting and Maintenance
      Replies: 0
      Last Post: 09-18-2012, 07:33 PM
    4. 04 aveo Fuel sending unit code P0463
      By screech985 in forum Troubleshooting and Maintenance
      Replies: 0
      Last Post: 10-08-2010, 12:49 AM
    5. Oil Pressure Sending Unit
      By Schwartz1986 in forum Engine & Drivetrain
      Replies: 1
      Last Post: 11-07-2009, 12:28 PM

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •