Low coolant light - LS1TECH

Go Back   LS1TECH > CHASSIS, SUSPENSION, APPEARANCE > General Maintenance & Repairs
Sign in using an external account
Register Forgot Password?
Search


General Maintenance & Repairs
Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by
Gearstar Performance Transmissions

Low coolant light

Reply
 
Thread Tools Search this Thread
Old 08-16-2012, 07:21 AM   #1
TECH Resident
 
cambirdracing's Avatar
 
Trader Rating: 4
Join Date: Jun 2009
Location: League City Texas
Posts: 865
Default Low coolant light

Wifey has a 98 Z28 and the low coolant light is on. Radiator is full. Is this the sensor that is about 4" below the rad cap? Does it fail often? Easy to replace? I would imagine that this light being on also make the check engine light come on. Car does not run hot. Lots of miles, close to 190k.
__________________
Annoying neighbors one posi at a time


"When applied at precisely the right time,
ignorance is a powerful tool,
usually surpassing even knowledge"
cambirdracing is offline   Reply With Quote
Old 08-16-2012, 07:24 AM   #2
On The Tree
 
Lockdown99ss's Avatar
 
Trader Rating: 1
Join Date: Jan 2011
Location: Fresno, CA
Posts: 133
Default

That sensor is known to fail often. Mine did too and I just ended up having a tuner delete it. I just leave it disconnected
Lockdown99ss is offline   Reply With Quote
Old 08-16-2012, 07:32 AM   #3
TECH Enthusiast
 
CO99Z28Vert's Avatar
 
Trader Rating: 30
Join Date: Apr 2007
Location: Longmont, CO 80504
Posts: 659
Default

Its not that the sensor fails, it becomes gunked up. You could remove it and clean it or just unplug it.
The low coolant light being on will not set a check engine light.
__________________

99 Z28 Silver/Black 427stroker M6 (sold)
06 Black Mica Mazdaspeed6
99 Z28 Red/Black Vert (sold)
03 Denali, lowered on 22's
CO99Z28Vert is offline   Reply With Quote
Old 08-16-2012, 09:02 AM   #4
TECH Addict
 
mjs1012's Avatar
 
Trader Rating: 31
Join Date: Mar 2011
Location: Milford, CT
Posts: 2,227
Default

just unplug it.
__________________
98 z28 A4.
mjs1012 is offline   Reply With Quote
Old 08-16-2012, 09:48 AM   #5
TECH Resident
 
cambirdracing's Avatar
 
Trader Rating: 4
Join Date: Jun 2009
Location: League City Texas
Posts: 865
Default

Thanks guys.
__________________
Annoying neighbors one posi at a time


"When applied at precisely the right time,
ignorance is a powerful tool,
usually surpassing even knowledge"
cambirdracing is offline   Reply With Quote
Old 08-16-2012, 12:06 PM   #6
TECH Addict
 
chrysler kid's Avatar
 
Trader Rating: 13
Join Date: Feb 2005
Location: Mckinney Plano Frisco
Posts: 2,004
Send a message via AIM to chrysler kid
Default

Just un plug it and the light will turn off. It's about half way down the radiator under the fill cap.

Replacing them is a waste of time, they fail far too often
chrysler kid is offline   Reply With Quote
Old 08-16-2012, 06:33 PM   #7
TECH Enthusiast
 
Trader Rating: 1
Join Date: Apr 2012
Location: West TN
Posts: 629
Default

Common chain of events with these sensors is as follows: Sensor fails. Remove and clean. Works for a little while or doesn't work. Replace when it fails again or if cleaning doesn't work. Stops working again. Clean it. Does nothing. Replace again. Light is still on with new sensor. Clean pigtail. No difference. Replace pigtail. Light is still on. Unplug light and check coolant manually. Life is happy hunky-dory and your dash isn't lit up.
__________________
95 Firebird Formula M6 Hardtop - Flowmaster Catback and K&N Filter - IT IS ALIVE!!!!
Check the Opti - Check the Opti - Check the Opti

US Army Veteran
Having a 10 second Honda is like coming out of the closet. You may surprise a few people, but you're still gay.
DisasterFormula is offline   Reply With Quote
Old 08-16-2012, 08:36 PM   #8
TECH Resident
 
cambirdracing's Avatar
 
Trader Rating: 4
Join Date: Jun 2009
Location: League City Texas
Posts: 865
Default

Quote:
Originally Posted by DisasterFormula View Post
Common chain of events with these sensors is as follows: Sensor fails. Remove and clean. Works for a little while or doesn't work. Replace when it fails again or if cleaning doesn't work. Stops working again. Clean it. Does nothing. Replace again. Light is still on with new sensor. Clean pigtail. No difference. Replace pigtail. Light is still on. Unplug light and check coolant manually. Life is happy hunky-dory and your dash isn't lit up.
You talked me into it, I am just going to unplug it. But it doesn't make the check engine light come on, it makes the check gauges light come on. Is this normal for for both lights to come on? She says the check guages light came on a few months before the low coolant light. I don't think there are any codes, at least not the last time I checked.
__________________
Annoying neighbors one posi at a time


"When applied at precisely the right time,
ignorance is a powerful tool,
usually surpassing even knowledge"
cambirdracing is offline   Reply With Quote
Old 08-16-2012, 09:02 PM   #9
TECH Enthusiast
 
Trader Rating: 1
Join Date: Apr 2012
Location: West TN
Posts: 629
Default

I unplugged mine and have no problem from the check gauges light. And no, unplugging it won't set off the CEL. It's just a dummy light like the skip shift light.
__________________
95 Firebird Formula M6 Hardtop - Flowmaster Catback and K&N Filter - IT IS ALIVE!!!!
Check the Opti - Check the Opti - Check the Opti

US Army Veteran
Having a 10 second Honda is like coming out of the closet. You may surprise a few people, but you're still gay.
DisasterFormula is offline   Reply With Quote
Old 08-17-2012, 07:03 AM   #10
TECH Resident
 
cambirdracing's Avatar
 
Trader Rating: 4
Join Date: Jun 2009
Location: League City Texas
Posts: 865
Default

Thanks, will try that this weekend.
__________________
Annoying neighbors one posi at a time


"When applied at precisely the right time,
ignorance is a powerful tool,
usually surpassing even knowledge"
cambirdracing is offline   Reply With Quote
Old 08-17-2012, 08:02 PM   #11
Save the manuals!
 
wssix99's Avatar
 
Trader Rating: 5
Join Date: Dec 2007
Location: Chicago, IL
Posts: 7,836
Default

Quote:
Originally Posted by chrysler kid View Post
Just un plug it and the light will turn off. It's about half way down the radiator under the fill cap.

Replacing them is a waste of time, they fail far too often
This is not wise. The GM engineers put it there for a reason and it saved me once from melting down my engine.

The sensors are not very durable but they are a necessary evil for an aluminum block. Better to get a new sensor than risk a low coolant situation that might deform the block.
__________________
Black 1999 Firebird Formula WS6; M6

Please DO NOT send PMs for questions that can be answered in the forums!
wssix99 is online now   Reply With Quote
Old 08-17-2012, 08:02 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply


Tags
2000, 98, camaro, car, check, coming, coolant, coolent, frequent, light, low, pontiac, sensor, sensors, taurus


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 On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 09:33 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details