Low Coolant
Thread Starter
Intermediate
Joined: Mar 2003
Posts: 28
Likes: 0
From: West Chester Pa
Low Coolant
What causes the low coolant light to keep going on and off as I drive. I have checked the coolant its fine, but when im driving it comes on and off. Were is the sensor located, is it near the overflow bottle I have an 86 coupe. I have changed the radiator cap that didnt work. :eek:
Safety Car
Joined: Jan 2001
Posts: 4,386
Likes: 689
From: Boise ID
Re: Low Coolant (EBrown)
The sensor is located 3 inches or so below the radiator cap, has a single wire connected to it. Even though it looks full, it sounds like you have air in the system. Try taking the cap off (when cold!) and start the engine, maybe rev to a couple grand or so when the stat opens open you may see the level drop and fluid can be added. Others may have more ideas on removing air from the system.
I think Oldman may be refering to the temp sensor....
[Modified by 87SAM, 2:56 PM 3/14/2003]
I think Oldman may be refering to the temp sensor....
[Modified by 87SAM, 2:56 PM 3/14/2003]
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Low Coolant (EBrown)
If the system can pull air it won't pull coolant from the overflow resevoir; check all hoses for leaks that would break the vacuum seal.
If the bottom of the resevoir or the overflow tube are clogged the system cannot pull coolant back into the radiator; pull the resevoir and clean it and the overflow tube.
If the bottom of the resevoir or the overflow tube are clogged the system cannot pull coolant back into the radiator; pull the resevoir and clean it and the overflow tube.
