Temperature Sending Unit - Chevelle Tech
1999 -- Tech Files - reference area
1000's of previous topics

 
LinkBack Thread Tools Search this Thread Display Modes
post #1 of 11 (permalink) Old May 14th, 99, 8:36 PM Thread Starter
Tech Team
 
Join Date: Dec 1998
Location: Weare, NH
Posts: 776
What is the best way to test the Temperature Sending Unit to verify that it is working correctly?
Thanks!

------------------
Madness takes it's toll, please have exact change.

Fred
'70 Chevelle
http://www.geocities.com/motorcity/s...0Chevelle.html
Riffers70 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old May 14th, 99, 11:28 PM
Tech Team
 
Join Date: Dec 1998
Location: Henderson, Nevada USA
Posts: 148
Hey Riff,
Try hooking up another gauge by sticking the sending unit in your heater connection or in the plug in the top of your water pump if your pump has one. Leave your other unit connected at the same time. You don't have to drill new holes to mount the temporary gauge in the dash; just stick it below with some velcro. An electrical gauge is easiest to install, but a mechinical is more accurate. mgg
Manny Gomez is offline  
post #3 of 11 (permalink) Old May 17th, 99, 3:27 AM Thread Starter
Tech Team
 
Join Date: Dec 1998
Location: Weare, NH
Posts: 776
Thanks manny...will check it out one night this week.

------------------
Madness takes it's toll, please have exact change.

Fred
'70 Chevelle
http://www.geocities.com/motorcity/s...0Chevelle.html
Riffers70 is offline  
 
post #4 of 11 (permalink) Old May 17th, 99, 4:14 AM
Administrator
 
Join Date: Feb 1999
Location: Marana, AZ
Posts: 15,947
Garage
Fred, Different places on the engine will give different temperature readings. Readings will be close but not the same between the available places you can put the second gauge. Even putting it into the other head may not give you the same reading. Philip
Philip is offline  
post #5 of 11 (permalink) Old May 17th, 99, 7:08 AM
Tech Team
 
Join Date: Aug 1998
Location: Durham N.C.
Posts: 622
Water boils at 212 degrees F -take the sender out of the engine (drain coolant etc) leave the gauge/harness wire connected, ground the sender body to the car with a wire and put the end of the sender in boiling water - should be 212 - make wire extensions if needed and BE CAREFUL

------------------
283v8 is offline  
post #6 of 11 (permalink) Old May 17th, 99, 7:30 AM Thread Starter
Tech Team
 
Join Date: Dec 1998
Location: Weare, NH
Posts: 776
283,
Sounds good in theory, but I experience enough pain and knuckle busting when working on the car wihout applying boiling water to the equation. Thanks for the idea, tho.

Fred "born a clutz"
Riffers70 is offline  
post #7 of 11 (permalink) Old May 17th, 99, 1:04 PM
Tech Team
 
Join Date: Apr 1999
Location: Merrimack, NH
Posts: 425
Hey Fred,

What is the wife going to say when you try to drive the car into the kitchen so you can park it next to the boiling water on the stove ???

Don't scratch that fancy front bumper when you go thru the sliders...

hehe

Bill T SS70 is offline  
post #8 of 11 (permalink) Old May 17th, 99, 1:12 PM
 
Join Date: Sep 1998
Location: Cleveland, Ohio
Posts: 19
The coolant sensor is basically a variable resistor, that changes resistance with heat.
If your vehicle has the correct temp sender, then find out what the resistance spec is at a specified temp (Autozone has a book that lists many different temp senders, and there specifications), and replace the temp sender with a basic carbon comp resistor. For example at 220 degrees the resistance for a particular sender might be 10K ohms. Then find a 10K ohm resitor and put that in place of the sender (make sure the correct wattage resistor is used). The gauge basically reads the voltage drop across itself, which changes as the resistance of the sender changes. This test should verify the gauge and associated wiring.
Ken M is offline  
post #9 of 11 (permalink) Old May 18th, 99, 4:48 AM Thread Starter
Tech Team
 
Join Date: Dec 1998
Location: Weare, NH
Posts: 776
Bill,

Ya know...the car (and the bumper) made it just fine through/up/over the deck. Didn't even slow down going thru the sliders, but stopped dead in it's tracks when it hit the wife's meatloaf. I don't think the bumper will ever be the same. By the way anyone know how to remove a spatula? The wife had unique ideas once she saw her new drive in...

Fred "having trouble sitting down" Dowd

[This message has been edited by Riffers70 (edited 05-18-99).]
Riffers70 is offline  
post #10 of 11 (permalink) Old May 18th, 99, 11:02 AM
Tech Team
 
Join Date: Aug 1998
Location: Durham N.C.
Posts: 622
YOU NITWITS !!! Obviously you need to run a new 220 circuit in your garage and move the stove from the kitchen into the garage !!! Who ever heard of driving the car into the kitchen - - - HMMMMMMMMMMM got some real possibilities though !Watch TV in the den while working on the Chevelle ????

------------------
283v8 is offline  
post #11 of 11 (permalink) Old May 18th, 99, 1:01 PM
Tech Team
 
Join Date: Oct 1998
Location: Sacto. CA USA
Posts: 151
If you have gauges in the car, remove the radiator cap (cold) use a meat thermometer and compair the two. Worked for me
Patrick Schamun is offline  
Sponsored Links
Advertisement
 
 

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevelle Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address. Note, you will be sent a confirmation request to this address.

Email Address:
OR

Log-in









Old Thread Warning
This Thread is more than 7308 days old. It is very likely that it does not need any further discussion and thus bumping it serves no purpose.
If you still feel it is necessary to make a new reply, you can still do so though.

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome