Hot light on after start up. - Chevelle Tech
Electrical & Wiring Troubleshooting electrical problems.

LinkBack Thread Tools Search this Thread Display Modes
post #1 of 2 (permalink) Old Jan 20th, 14, 12:30 AM Thread Starter
Tech Team
Join Date: Dec 2010
Location: Arizona
Posts: 205
Hot light on after start up.

I researched this for a while but really could not find an answer to what I was looking for. I have been looking for an explanation of what an idiot light really is but I did not really find a good answer. My main concern is, When I start up my 72 Concours 350/350 there is a Hot light in the sweep dash that comes on and stays on for about 5-10 min then goes off. Is this normal? I read some posts that it was, and some that said it could be a defective Temp Sending unit or mis-wired. My Haynes manual really does not say anything. I just changed my Water pump and T-stat yesterday and noticed there was a sensor in the T-stat, but no wires hooked to it so I am guessing this is just serving as a plug for the hole in the top of the T-stat. I am going to check the sender tomorrow that is located in the head but wanted to see if this is really what I need to be checking into.
skongolf is offline  
Sponsored Links
post #2 of 2 (permalink) Old Jan 21st, 14, 5:58 AM
Senior Tech Team
Join Date: Apr 2007
Location: San Antonio, Texas
Posts: 5,062
Re: Hot light on after start up.

perhaps someone, some time ago used a sending unit for a
63/4 Impala

Those cars had "COLD" & "HOT" lamps.
If this is the case---there should be 2 terminals on the sending unit.
move your wire to the other terminal.

The "TEMP/HOT" lamp should come on while cranking the engine and go off
as soon as you release the key.

There is an additional ground circiut in the ignition switch just for this lamp

Bryan's toyz

59 ElCamino 454/TKO 5spd--(daddy)
66 ElCamino 3oh7/TKO 5spd (mousey) Almost done
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
On the street now!!!
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

65 Ranchero v8/4-spd, that my uncle bought new
Bryan59EC is offline  
Sponsored Links

Quick Reply

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


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

Email Address:


Old Thread Warning
This Thread is more than 2362 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 post new threads
You may 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