Volvo RWD 140-160 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2005 140-160 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

Temp gauge doesn't work right. 140-160

posted by  cdu on  Mon Dec 2 20:34 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Sep 20 11:18 CST 2000
[RELATED]


I can't figure out what's wrong.

With the temp gauge hooked up to the temp sending unit, the gauge
doesn't move no matter how hot the motor is (Okay -- I haven't tested
it at red hot). If I put the temp gauge wire against a part of the
motor, the gauge swings into the red. I've replaced the sending
unit with one from a junk yard (don't know if it works or not but
I'll assume it does). I've run a wire from the base of the sending
unit to some other part of the motor to ground it -- no change.
The gas gauge works normally.
chris








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Temp gauge doesn't work right. 140-160

    posted by  Mechanic on  Wed Dec 4 05:53 CST 2002
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS] [RELATED]

    CDU, put an ohm meter across the extra sensor you have. You should have high resistance with a cold sensor and low resistance with it hot, something like 30 ohms or so. The gauge is just an ammeter, so a low resistance gives more current flow and a higher needle reading. Be sure to chk. the ground wire from the sensor to ground for a good no resistance connection.
    12volts goes through the dash gauge then through the variable resistor (sensor) and then to ground. Tom








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    Temp gauge doesn't work right.

    posted by  Chris Mullet on  Tue Dec 3 00:56 CST 2002
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 09:08 CST 2014
    [RELATED]

    Do you have an ohm meter with which you can measure the resistance through the sensor(s). It sounds like you got real unlucky and now own TWO bad sensors.







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.