catch-22

iTrader: (2)

i got a coolant temp gauge (electric) and i made a "t" out of some fitting i had placed the sendor in the top of the t. i spliced it into the TB coolant line and im not getting a reading. could it be the t i made???

Buzzardsluck

Does the gauge come on? All wires hooked up? Are you sure the sender unit works?

IMO no matter what you did on the splice you should get some reading.

BlouZbee

iTrader: (7)

Ground the temp sender.

this will help....

http://home.ptd.net/~blouzbee/boost/

catch-22

iTrader: (2)

yeah thats what i thought but when i start the car up when its warm i see the needle pop up a little but it never moves past a little below a 100 degrees F. could be the sender but it was brand new out of the box.

catch-22

iTrader: (2)

o thanks did the the ground the sensor post thanks BlouZbee

catch-22

iTrader: (2)

now that i grounded the t the needle is pointing all the way over past 250. whats going on!!!?

FDZero

iTrader: (10)

just curious...what type of water/coolant temp gauge do you have? From my understanding (and my own gauge...a Defi BF series), if you have an electric gauge (not mechanical = requires grounding), you won't have to ground the sender/sensor itself...the sender/sesnor head should all be connected to your gauge's central linking system via simple harness. For instance, my Defi BF gauge is all centrally linked to the Defi CPU Unit II, which powers this and all other gauges with one ground. It's called the "daisy chain."

Scroll half way down where you see "DamonB" and "DaleClark" talk about the needle positioned @ the farthest right..similar to your scenario...

https://www.rx7club.com/showthread.p...0&page=5&pp=15

catch-22

iTrader: (2)

its the autometer sportcomp and its electric. i tried grounding it to the same location that BlouZbee said to but the needles past 250 degrees f.

catch-22

iTrader: (2)

bump

BillM

iTrader: (4)

are the wires backwards?

DamonB

Either

A) you have it wired wrong at the gauge

B) the tip of your temp sender is contacting the inside of the tee and thus is grounded (only the outer threaded body of the sender should be grounded).

C) your sender is somehow bad

catch-22

iTrader: (2)

naw i have all the wires hooked up right. the sensor tip doesnt look like its touching anythingits no where near the end of the tee. am gfetting power to the ignition part of the gauge and it is grounded. is there supposed to be current going through the sensor wire because there is none going to it.

catch-22

iTrader: (2)

k i took out my test light and was testing all the conections to see if everything was getting power and was grounded/ everything was ok until i cheack the sendor wire. it barely had enough power to light the bulb. could the ground not be very good?

adam c

iTrader: (2)

You need to list the manufacturer, and model of the gauge that you have, and post a picture of how it is wired at the sender.

catch-22

iTrader: (2)

autometer watertemp. sportcomp electric. dont have a digital camara, but im a 100 persent positive that the wireing is right, it just seems like the sender wire isnt getting enough current because i got the gauge to go up alittle now its right on 100 degrees F

Sgtblue

iTrader: (16)

^I think this will yield symtoms similar to what your reporting.
Try pulling the sender out of the 'T' and putting it into a container of hot water with a thermometer so you can compare those readings to your gauge.

Trexthe3rd

Maybe it's just me, but if you have the sensor T'd into the TB coolant line, that is your problem. The temperature reading is actually correct at that location. Most people have the sensor installed in the filler neck housing, or find a location to T off one of the lines comming out of the filler neck, this is where the hot coolant goes prior to entering the radiator.

Sgtblue

iTrader: (16)

If you still have the TB coolant line, it makes an excellent place. It's inexpensive, easy, reversible and gives accurate readings. I can predict when my fans will come on within seconds by watching my gauge.

catch-22

iTrader: (2)

k ill try and put the sensor in some hot water tonight and see what happens