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Sensor broke while changing oil filter

Discussion in '1st Gen. Tacomas (1995-2004)' started by MomoFire93, Mar 12, 2019.

  1. Mar 12, 2019 at 12:26 AM
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    MomoFire93

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    MomoFire93 [OP] Member

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    I have a 2003 V6 4x4 automatic Tacoma. I was changing the oil today, and while screwing on the new oil filter and cleaning up oil around it, I noticed a sensor(?) break off.
    I think it was already brittle and just got brushed and fell off, a small plastic ring part came off completely as well as a spring. The wired part is still connected..

    What is this sensor?
    How can I replace it?
    Is it a big deal and need to do asap? I am planning to drive from Reno to Phoenix in a couple days so it's kinda a bad time...

    I couldn't find a part number. From diagrams I think it could be a coolant sensor, oil pressure sending unit, or oxygen sensor. Really not sure.. I'm not good with the sensors and all that.
    The place where it pops into looked like it threaded in, so I tried to unscrew it and it was larger than a 19mm and also already rounded out so I stopped trying..20190311_170746.jpg 20190311_170822.jpg 20190311_170839.jpg 20190311_170936.jpg 20190311_170819.jpg
    Also maybe unrelated but in the past year maybe like 3 or 4 times the check engine light sometimes comes on and throws a code for Catalytic Converter/Oxygen Sensor but it often just goes away on its own..

    20190311_170746.jpg
     
    MomoFire93, Mar 12, 2019
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  2. Mar 12, 2019 at 4:58 AM
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    zach141b

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    zach141b Well-Known Member

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    zach141b, Mar 12, 2019
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  3. Mar 12, 2019 at 6:35 AM
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    Wsidr1

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    Wsidr1 Well-Known Member

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    From 2003 FSM
     

    Attached Files:

    Wsidr1, Mar 12, 2019
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  4. Mar 12, 2019 at 6:42 AM
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    FreshOldTaco

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    FreshOldTaco Well-Known Rider

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    FreshOldTaco, Mar 12, 2019
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  5. Mar 12, 2019 at 9:03 AM
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    MomoFire93

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    MomoFire93 [OP] Member

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    MomoFire93, Mar 12, 2019
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  6. Mar 12, 2019 at 9:38 AM
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    zach141b

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    zach141b Well-Known Member

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    Well, I wouldn't recommend it. I should think the present condition would result in the red oil light illuminating near the speedometer. Have you cranked the truck?
     
    zach141b, Mar 12, 2019
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  7. Mar 12, 2019 at 9:53 AM
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    MomoFire93

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    MomoFire93 [OP] Member

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    Yes I have driven it maybe 20-30 minutes around town yesterday and there is no light
     
    MomoFire93, Mar 12, 2019
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  8. Mar 12, 2019 at 12:36 PM
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    zach141b

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    zach141b Well-Known Member

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    Well, far as I know, a failed oil pressure switch should make the oil light come on. Is the light failed?
     
    zach141b, Mar 12, 2019
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  9. Mar 12, 2019 at 3:56 PM
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    zero4

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    zero4 Metal Cutter

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    It's not leaking so you'll be fine driving. The sensor broke at the connector. Sensor base is still intact sealing the hole. On our trucks the only thing the sensor does is make the warning light on the cluster illuminate when there's low oil pressure.
     
    zero4, Mar 12, 2019
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  10. Mar 12, 2019 at 5:08 PM
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    MomoFire93

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    Do I need to drain the oil first to change the sensor out?
    Should I use thread tape?

    Os it as easy as using a deep socket to remove the sensor and replacing it, clicking housing/connection together of the M and F parts?


    And no there is no oil light on.
     
    MomoFire93, Mar 12, 2019
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  11. Mar 12, 2019 at 5:21 PM
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    zero4

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    zero4 Metal Cutter

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    No need for teflon tape, I don't like teflon tape for oil or fuel. A bit of rtv (sensor safe, most are these days) is sufficient. No need to drain oil first..
     
    zero4, Mar 12, 2019
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  12. Mar 12, 2019 at 5:21 PM
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    Wsidr1

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    Wsidr1 Well-Known Member

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    Did you look at the attachment I saved above? It has the installation instructions. But, to answer your question about thread tape, here is the recommendation:

    8. REINSTALL OIL PRESSURE SWITCH (a) Apply adhesive to 2 or 3 threads. Adhesive: Part No. 08833–00080, THREE BOND 1344, LOCTITE 242 or equivalent. Loctite is the most readily available. Check Autozone, O'Reilleys,...
     
    Wsidr1, Mar 12, 2019
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  13. Mar 12, 2019 at 5:57 PM
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    zero4

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    zero4 Metal Cutter

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    I never have or thought to use threadlock for a sensor like this. Make sense cause it's a tapered thread & technically self sealing so a bit of threadlock will be sufficient to aid in sealing.

    I prefer & would use Loctite 243 rather than 242. 243 is the same as 242 blue threadlock except 243 is better in applications where there is still oil residue. But they don't sell 243 at auto parts or hardware stores.
     
    zero4, Mar 12, 2019
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  14. Mar 12, 2019 at 8:16 PM
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    MomoFire93

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    MomoFire93 [OP] Member

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    Yes I did read the attachment. It was rather vague. "Remove sensor" or "install sensor". So I didnt know if they were leaving some details out. Also what is a SST? Specialized service tool? The part number also didn't match the OEM so I didn't know if it was exactly for a 4x4 automatic V6 1st gen 2003 Tacoma...

    I've been doing research and read conflicting information about whether you should use thread lock or thread tape or sensor safe loctite etc or not at all since its just oil...
     
    MomoFire93, Mar 12, 2019
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  15. Mar 13, 2019 at 6:06 AM
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    Wsidr1

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    Wsidr1 Well-Known Member

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    SST is a "Special Service Tool". Translation: overpriced tool only available from a Toyota dealership. Most people find ways around them, or it may be something you can buy from AutoZ or O'Reilley's if a common tool won't do the job.

    BTW that info is from the Toyota Field Service Manual (FSM). The info was from the 3.4L section of the manual. Probably the part number has changed due to some small design change since the manual was issued. Happens a lot. Or, your vehicle has an original part and the one in the manual was updated. Either way, from Toyota Dealer:

    Toyota Genuine Factory Part
    Part Number:
    $33 835300E010 Genuine Oil Pressure Sensor/Sending Unit 83530-0E010
    835300E010

    OIL PRESSURE SENDING UNIT Tacoma

    $51.00
    Fits 2003 Toyota Tacoma Base
     
    Wsidr1, Mar 13, 2019
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  16. Mar 13, 2019 at 7:56 AM
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    Wulf

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    Wulf no brain just damage

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    Wulf, Mar 13, 2019
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  17. Jan 5, 2023 at 1:13 AM
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    Sebz13

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    Bumping an old thread. I need to get a new sensor but I also need to get the pig tail. I’m missing the entire connector I just have wire to sensor, any idea how I can get one aside from a salv 3.4
     
    Sebz13, Jan 5, 2023
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  18. Jan 5, 2023 at 1:31 AM
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    mechanicjon

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    mechanicjon, Jan 5, 2023
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  19. Jan 5, 2023 at 6:40 AM
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    Sebz13

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    Sebz13 appy polly loggies

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    ordered thank you
     
    Sebz13, Jan 5, 2023
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Products Discussed in

1x Connector 1-way 1 pin for Toyota Oil Pressure Sensor 90980-11363
$12.99
Genuine Oil Pressure Sensor/Sending Unit 83530-0E010
$32.45
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