Results 1 to 17 of 17

Thread: TW Sensor Clarification

  1. #1
    LX User niles's Avatar
    Join Date
    Oct 2009
    Vehicle
    87 LXi Hatch
    Location
    Gifford Pinchot National Forest
    Posts
    475

    TW Sensor Clarification

    Hi All, I recently did some TW sensor troubleshooting because my car has been having a hard time cold starting. I have no engine codes.

    I want to clear up some misinformation I came across when reading multiple threads here on 3Geez. This may not be the case for all 3Geez so this is confirmed for an 87 LXi Hatch.

    The TW sensor Autozone part number that has been thrown around is incorrect, it is NOT SU4006, and that goes for 5S1468 too at RockAuto. I picked one up and had to return it because the tab on the plug was different. The correct sensor was in fact SU410.

    Honda Part Numbers:
    TW Sensor = SU410 = 37870-PD6-003
    Thermo Switch = SU4006 = 37773-PJ0-661

    So to be 100% sure you get the right sensor follow these two easy steps:
    1) - Preform proper troubleshooting: Download Service Manual
    2) - Compare the tabs on your defective sensor to the replacement sensor




  2. #2

    Dr_Snooz's Avatar
    Join Date
    Jun 2007
    Vehicle
    1989 Accord LX-i
    Location
    Fresno, California
    Posts
    10,674

    Re: TW Sensor Clarification

    Good to know. Thanks for pointing that out.
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  3. #3


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification

    Very well done.

    Can we get together and get some pictures of the sensors on the car? I got a J code 88.

    Be a good sticky when finished.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  4. #4
    SEi User gp02a0083's Avatar
    Join Date
    Nov 2004
    Vehicle
    1989 Lx-i Hatchback
    Location
    Jackson, NJ
    Posts
    1,838

    Re: TW Sensor Clarification

    excellent write up niles

    1989 Accord Lx-i hatchback (current DD project)
    1986 Olds Cutlass 442 clone (never ending project)
    3Geez resident body man
    Owner of Wreck-less auto body

  5. #5
    LX User niles's Avatar
    Join Date
    Oct 2009
    Vehicle
    87 LXi Hatch
    Location
    Gifford Pinchot National Forest
    Posts
    475

    Re: TW Sensor Clarification

    This is interesting, I was reading the engine code check post in the How-To section and noticed that not all 3Geez are the same. https://www.3geez.com/forum/how/81283...odes-pics.html. 89 LXi has a different TW Sensor. Check the pic attached to the Code #6 section taken by ShyBoyCA6. I think that's an 89 in the picture.

    So here's mine: 87 LXi - I've never messed with these before but maybe a previous owner had?

  6. #6


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification

    Click image for larger version. 

Name:	xhJEj1.jpg 
Views:	1665 
Size:	91.9 KB 
ID:	6633

    Well ok here is mine. 1988 3 door accord lxi. its a J code car build date 1987.

    Looks opposite?


    This is the thread I reference. I didnt realize the picture links are dead in it until today.

    https://www.3geez.com/forum/efi-tech/...tw-sensor.html
    Last edited by Oldblueaccord; 11-03-2014 at 11:29 PM.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  7. #7
    LX User niles's Avatar
    Join Date
    Oct 2009
    Vehicle
    87 LXi Hatch
    Location
    Gifford Pinchot National Forest
    Posts
    475

    Re: TW Sensor Clarification

    Quote Originally Posted by Oldblueaccord View Post
    Click image for larger version. 

Name:	xhJEj1.jpg 
Views:	1665 
Size:	91.9 KB 
ID:	6633

    Well ok here is mine. 1988 3 door accord lxi. its a J code car build date 1987.

    Looks opposite?


    This is the thread I reference. I didnt realize the picture links are dead in it until today.

    https://www.3geez.com/forum/efi-tech/...tw-sensor.html
    It looks like the tabs on your sensors are both on the same side. Can you confirm that? I am starting to think it might be a pre/post-facelift thing.

  8. #8


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification

    Quote Originally Posted by niles View Post
    It looks like the tabs on your sensors are both on the same side. Can you confirm that? I am starting to think it might be a pre/post-facelift thing.
    I think it is. The early FI cars where a little different than the later ones.

    I would go by the wiring. I see 2 wires on my plug on the left.

    Ill get some pics tomorrow I am a bit down on a sore neck and just come from the chiropractor.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  9. #9
    LX User niles's Avatar
    Join Date
    Oct 2009
    Vehicle
    87 LXi Hatch
    Location
    Gifford Pinchot National Forest
    Posts
    475

    Re: TW Sensor Clarification

    Thanks for your help oldblue. I was able to at least confirm which is which. Only one sensor will trigger the code 6, and for me its the SU410 sensor.

    My sensor wire colors:
    TW Sensor: green/white stripe and yellow/green stripe
    Cooling Fan Sensor: white/green stripe and black
    Last edited by niles; 11-04-2014 at 01:44 PM. Reason: Wrong thread oops

  10. #10


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification



    tabs look nearly identical to me?
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  11. #11
    SEi User Demon1024's Avatar
    Join Date
    Apr 2007
    Vehicle
    86lxi hatch auto 87lxi hatch auto 88 lxi hatch 5-speed 96 sedanex 5-speed 88 carb coupe 88 sedan carb
    Location
    NW Arkansas
    Posts
    1,088

    Re: TW Sensor Clarification

    Started working at O'reilly's a couple weeks ago and it looks like their part number for the Tw is 17-1236 I got in, gonna put it on tonight
    Last edited by Demon1024; 06-04-2015 at 09:26 PM.

    "Weight is relative to power like time is relative to speed"

  12. #12


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification

    ill put this up as a sticky if some other people can verify this info.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  13. #13


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification



    This unplugged causes a code 6 on the ECU.

    Two vids to help understand its operation a little better.



    Second one is with the sensor plugged back in.

    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  14. #14


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification






    I highlighted the 200-400 ohm reading as important with the car fully warmed up.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  15. #15
    DX User
    Join Date
    Dec 2023
    Vehicle
    1986 Honda accord LXI, 1989 Chevy Camaro, 1990 Chevy s10 and 2002 Buick century
    Posts
    4

    Re: TW Sensor Clarification

    https://youtube.com/shorts/kbfqZ053X...K6KC2Wp-CN2dWc
    This is my accord and I have a code 6 is this idle a result of the code 6?
    https://www.3geez.com/forum/showthre...29-Where-is-it
    In this post shows the sensors mine the one in the yellow box is corroded is this causing the rough idle and rough start or is it a vacuum leak

    https://youtube.com/shorts/kbfqZ053X...K6KC2Wp-CN2dWc
    Last edited by Oldblueaccord; 01-05-2024 at 02:09 PM. Reason: Tried to inbed video no luck

  16. #16


    Join Date
    Nov 2004
    Vehicle
    88 LXi
    Location
    Knoxville TN
    Posts
    5,279

    Re: TW Sensor Clarification

    Quote Originally Posted by SamKCMO View Post
    https://youtube.com/shorts/kbfqZ053X...K6KC2Wp-CN2dWc
    This is my accord and I have a code 6 is this idle a result of the code 6?
    https://www.3geez.com/forum/showthre...29-Where-is-it
    In this post shows the sensors mine the one in the yellow box is corroded is this causing the rough idle and rough start or is it a vacuum leak
    If it has code 6 I would fix the connector, test the ohms of the sensor or replace it.

    When the sensor fails you car runs very rich.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  17. #17
    DX User
    Join Date
    May 2024
    Vehicle
    1987 Accord LXi
    Location
    Corvallis, OR
    Posts
    30

    Re: TW Sensor Clarification

    Figured I would share that the O'reilly part number mentioned above seems to have since been updated. The part number now is 17-1237.

    I just replaced the TW sensor on my 87 and the O'reilly 17-1237 was a perfect fit.

Similar Threads

  1. cylinder position sensor and TDC sensor
    By newaccorddriver in forum EFI Tech
    Replies: 13
    Last Post: 04-21-2011, 10:02 PM
  2. Coolant temp sensor tw sensor
    By Bluntman in forum 3geez Accords
    Replies: 6
    Last Post: 07-06-2009, 06:12 PM
  3. Need help! Broke a sensor wire (green sensor)
    By SMaurer32 in forum EFI Tech
    Replies: 1
    Last Post: 10-31-2005, 08:06 AM
  4. b20a question/clarification
    By LXaccordian in forum General Engine Swaps
    Replies: 5
    Last Post: 12-13-2004, 06:31 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
     
Links monetized by VigLink