The Galant Center - Powered by vBulletin

Thread: 03' Coolant Temp Guage not working, How to Fix...

Showing results 1 to 6 of 6
  1. #1

    03' Coolant Temp Guage not working, How to Fix...

    I bought a 2003 Galant ES 2.4L about 1 month ago

    Coolant temperature gauge in the dash has not worked since I bought it.

    Last weekend I changed the Spark Plugs & Wires, Valve Cover Gasket & PCV Valve. Whilst all that was torn apart I changed the Coolant Temp Sensor ( http://www.autozone.com/engine-manag...?checkfit=true )

    Changing the Coolant temperature "Sensor" did Not Fix the Coolant Gauge.

    I got to Thinking, could the non-functioning Gauge be caused by the Temperature "Switch" ( http://www.autozone.com/cooling-heat...?checkfit=true ) ? If so, where is that "Switch" located ?

    What else besides the possible bad "Switch" could cause the Non-functioning Coolant Temp Gauge ?

    Thanks

  2. #2
    There are two different coolant temp sensor plugs. One is the sensor that threads into the cylinder head. That's probably the one you changed; it has 2 pins and a nice harness plug that goes to the ECU. If that is out of whack, the car will run like shit.

    The gauge uses a 1-wire connection down under the upper coolant hose where it meets the engine. It's above the gearbox, kinda around where the fuel hoses meet the rail. Should be a black plastic rectangular connector with one wire coming off. It's super flimsy, so that's probably your culprit. There's a spade terminal floating around under there that it goes to. I think it's on the coolant neck/thermostat housing.

    Sorry I don't have pics right now (at work). If you fish around under there, you may be able to find the terminal and/or single-wire cable. It ties into the engine/trans harness somewhere nearby above the transmission.
    2000 Mitsubishi Galant (totalled by semi, RIP)

    2000 Mitsubishi Galant - Bought off Craigslist, received organ donation from last one:
    - Engine/5spd trans/interior/suspension/brakes/etc. all moved from old car
    - 5spd | Outlander IM | StopTech BBK | Defi VSD-X HUD

  3. #3

  4. #4
    Quote Originally Posted by tamim13 View Post
    Here's the thread with pictures of both sensors -

    https://www.thegalantcenter.org/show...erheating-Hmmm
    Thanks tamim, those are the ones!
    2000 Mitsubishi Galant (totalled by semi, RIP)

    2000 Mitsubishi Galant - Bought off Craigslist, received organ donation from last one:
    - Engine/5spd trans/interior/suspension/brakes/etc. all moved from old car
    - 5spd | Outlander IM | StopTech BBK | Defi VSD-X HUD

  5. #5
    I also have such a situation and don't know how to fix it.

  6. #6
    Quote Originally Posted by Tystor View Post
    I also have such a situation and don't know how to fix it.
    Mybe just try to find a specilist that can help you.

Posting Rules

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