Where is Coolant Teperature Sensor & fuse located? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Everything Electrical & Electronic Have an electrical problem? Lighting, Alternators, gauges, DIC, HUD, etc? Post it here. Please post Audio problems in the Audio forum, and Engine control problems in the appropriate Mechanical forum for your year.

Reply
 
 
 
Thread Tools Search this Thread
Old 09-11-2011, 04:14 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2010
Location: Charleston, SC
Posts: 61
Thanks: 0
Thanked 0 Times in 0 Posts
D88RIII is on a distinguished road
Question Where is Coolant Teperature Sensor & fuse located?

I've had the Low Coolant idiot light on constantly for months. The coolant level is fine, looks fine and always has been. I'm 99% sure its just a bad coolant sensor, or maybe the fuse for the sensor?

Problem is, I can't find either one. I have a '94 3800 TPI (non supercharged) engine. The Haynes is fuzzy on where to find the sensor. Is it hiding below/behind my alternator on manifold on pass. side??) Is it near the throttle body on driver'* side?

Also, where is the fuse for this sensor? Thanks as always.
D88RIII is offline   Reply With Quote
Old 09-11-2011, 09:13 PM   #2
Junior Member
Posts like a Ricer Type-R
 
Join Date: Sep 2011
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
hebsmadwi is on a distinguished road
Default

Hi.
Well,
on our 93 Bonnie, the sensor is on the passenger side radiator tank. Regardless of model, I'm sure it will be on the radiator somewhere.
hebsmadwi is offline   Reply With Quote
Old 09-12-2011, 12:59 AM   #3
Member
Posts like a V-Tak
 
Join Date: Mar 2011
Location: Las Vegas NV
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
praiseteamof2 is on a distinguished road
Default

Drivers side - front right inside radiator support frame - mounted 3/4 the way up toward the hood is where the switch is.
praiseteamof2 is offline   Reply With Quote
Old 09-18-2011, 11:24 AM   #4
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2010
Location: Charleston, SC
Posts: 61
Thanks: 0
Thanked 0 Times in 0 Posts
D88RIII is on a distinguished road
Default Unplugged, coolant light still on

OK, so I located wiring that plugs into the passenger side of the radiator. The wiring plugs into a housing which in turn plugs into the radiator. I unplugged the wiring but left the housing in. There was no change on the dash- all trouble lights come on when starting the car, then go off, then the 'Low Coolant' light comes back on. I'm assuming that I need to unplug the whole housing to make the dummy light go away?
D88RIII is offline   Reply With Quote
Old 09-18-2011, 11:53 AM   #5
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

the sensor is probably bad, you can replace it then plug it back in, or sounds like a short on the connector (like a paper clip, wire between the wires that go into the harness) would turn the light off.
jwfirebird is offline   Reply With Quote
Old 09-18-2011, 06:47 PM   #6
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2010
Location: Charleston, SC
Posts: 61
Thanks: 0
Thanked 0 Times in 0 Posts
D88RIII is on a distinguished road
Default Sensor Circuit

Quote:
Originally Posted by jwfirebird View Post
the sensor is probably bad, you can replace it then plug it back in, or sounds like a short on the connector (like a paper clip, wire between the wires that go into the harness) would turn the light off.
So you are saying, just closing the circuit will turn the light off? And connecting/jumping the two wire ends will NOT blow a fuse or worse?
D88RIII is offline   Reply With Quote
Old 09-18-2011, 08:26 PM   #7
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

sensors like that are open or closed, if you have it open( unplugged) and it thinks the coolant is low then closed( shorted together) is what is going to make it think the coolant is good. personally i would just replace the sensor. thats one of those things thats good to have if you have a leak it may save you from getting into a bad situation. when it went in my bonnie i dont remember it being that expensive.
jwfirebird is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
$&)$&*)#&+()#%& )#@(%&#)%*(&+_ Maymybonnieliveforevr Lounge 6 05-02-2007 07:07 PM
Help please tell me where crank&cam sensor are located REDSTU1 1987-1991 2 01-02-2006 07:33 AM
where is the map sensor located on the 95 bonneville? zo6vette 1992-1999 11 02-21-2005 08:14 PM
Have Code for Knock sensor, where is it located on a 94 SSEi 94BonneSSEi 1992-1999 1 06-06-2004 02:45 AM
Anyone know where the RPM sensor is located????? junkman 1987-1991 6 04-18-2003 10:12 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:15 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.