carpmart
|
| posted on 1/3/09 at 08:56 PM |
|
|
Racetech Temperature Guage
Hi Chaps
I got an old Racetech electric water temp guage with some parts and decided to use it on a project. I bought what I think is the appropriate sender
from racetech but having tried to test with a cup of hot water, a 12v battery and some wire, I can't get the guage to register anything?
I have a few questions;
Will my method of testing work?
Is my test correct? Positive, negative to corresponding battery terminals, last connection to sender?
What usually is at fault, senders or guages when they go wrong?
Thanks in advance for your assistance!
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack 
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
|
|
|
|
|
martthefridgeman
|
| posted on 1/3/09 at 08:59 PM |
|
|
casing of sender needs to go to battery negative as well (it picks up a ground/ negative from the engine block) ATB Mart
[Edited on 1/3/09 by martthefridgeman]
|
|
|
carpmart
|
| posted on 1/3/09 at 09:12 PM |
|
|
quote:
Originally posted by martthefridgeman
casing of sender needs to go to battery negative as well (it picks up a ground/ negative from the engine block) ATB Mart
[Edited on 1/3/09 by martthefridgeman]
Mart
I worry how thick I am sometimes!
Thanks mate!
You only live once - make the most of it!
Radical Clubsport, Kwaker motor
'94 MX5 MK1, 1.8
F10 M5 - 600bhp Daily Hack
Range Rover Sport - Wife's Car
Mercedes A class - Son's Car
|
|
|
BenB
|
| posted on 1/3/09 at 09:41 PM |
|
|
Yup. That'll be it. You need to earth the casing of the sensor. Otherwise you'll get no signal
Same thing happened to me when I forgot to run an earth cable from my engine block to the thermostat (which contained the sensor).... Electrically
isolated thermostat therefore no signal... Crappy little bit of bell wire later= signal
|
|
|
