coolant light sometimes stays on

XtorT'r

New Member

Jun 11, 2003

381

0

0

Minnesota, YAAA

Mar 9, 2007

#1

• Mar 9, 2007

• #1

Just like the title, Every now and again when I start my car the dummy light stays on for the coolant. My temp gauge seems ok and usually if you shut the car off and restart it goes off but it's a PITA and I figure I might be ignoring a bigger problem. Anyone have an idea what it might be. I've had the coolant changed regularly and I think last time I had the thermostat changed as well.

Maybe some sensor somewhere I can look at?

 

forum155pl

New Member

Jul 11, 2006

520

0

0

the 509

Mar 9, 2007

#2

• Mar 9, 2007

• #2

there is a little float sensor in the coolant tank .. sometimes it will sink and stick .. mine does it from time to time.. pulling it apart and cleaning it would prolly do the trick..

 

9

'99 T/A

Founding Member

Mar 19, 2001

357

0

17

Houston, Texas

Mar 9, 2007

#3

• Mar 9, 2007

• #3

LOL ! At least you guys get a float !

On mine ( F ) the little sensor just screws into the radiator, and over time gets gooped up.

The result ? Low coolant light, even when the coolant is a OK.



So,after going through 2 under warranty the sensor got disconnected.

VOILA ! No more light.

I check my underhood often enough to not need it anyways.

Britt

 

kingc

New Member

Nov 25, 2006

85

0

0

Spring/Houston, TX

Mar 10, 2007

#4

• Mar 10, 2007

• #4

I have that problem too with the sensor like someone said its a pos. I think to replace the sensor/floaty thing you have to replace the overflow tank/res.

 

D

Dragstr05

New Member

Dec 21, 2004

643

1

0

Stafford VA

Mar 10, 2007

#5

• Mar 10, 2007

• #5

Same problem here. Been getting quite annoyed with it.

 

the98stang

Active Member

Aug 12, 2005

2,408

0

47

Clovis, CA

Mar 12, 2007

#6

• Mar 12, 2007

• #6

The sensor will go off if you don't have a perfect 50/50 mix of coolant and water. Too much water or coolant will cause it to sink to the bottom of the resevoir and set off the light. If you don't want a 50/50 mix, you can unplug the connector for it, which is located outside of the tank (driver's side) attached to the bottom.