Coolant Problem!!! Please Help if you know
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Coolant Problem!!! Please Help if you know
On my dashboard near my clock the "add coolant" light comes on. Then this annoying long beeeppp comes on. But my temperature is normal and I have coolant in my reserve tank. What should I do? is it that there's bubbles in the system? or is it that I have a leak somewhere? or should I just flush the cooling system...
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So - you have air in the radiator top tank.
I assume you have refilled it & the air pocket returned.
Most likely the radiator cap is not sealing so coolant can't recover during cool down.
It could also be a small external coolant leak.
Hopefully it's not an internal coolant leak.
I assume you have refilled it & the air pocket returned.
Most likely the radiator cap is not sealing so coolant can't recover during cool down.
It could also be a small external coolant leak.
Hopefully it's not an internal coolant leak.
#3
@ pipnorcali
pull of the rad. cap and fill it , star the motor and look for tiny bubbles int he coolant this means you have a leak somewhere ( heater hoses, colant seal..etc)
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I've been having the same problem. At first the radiator cap would not hold enouhg pressure and the coolant would leak out above the filler neck. Now the filler neck stays dry and the annoying coolant buzzer comes on like every other day and I can't get any of the reserve to be vacuumed back into the system, Ive replaced the radiator cap at least 4 times, the water pump is only about 2 years old and I don't have any high temp probs with normal city driving even in 100 weather, (I dont' have the underbelly and temp gauge is up about half way on a long hot trip because of the air deflection). If anyone else has suggestions please post them. I was just going to do an entire coolant system overhaul because I'm completely sick of that F****** buzzer!
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It's has to be getting air in the system from somewhere.
I had a brand new radiator once with a small dent in the filler seal lip.
Even a new cap would not seal.
I also have had a cap whose recovery valve didn't clear the inside of the filler neck.
I had a brand new radiator once with a small dent in the filler seal lip.
Even a new cap would not seal.
I also have had a cap whose recovery valve didn't clear the inside of the filler neck.
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Originally Posted by Forcus
I'm having the same problem but I tried grounding the wire to the radiator (the add coolant wire) and it didn't do anything.
You really should fix it.
The warning it gives can save you from being stranded, and can save your engine.
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Originally Posted by SureShot
It's risky to just shunt that sensor.
You really should fix it.
The warning it gives can save you from being stranded, and can save your engine.
You really should fix it.
The warning it gives can save you from being stranded, and can save your engine.
What I meant was I *thought* that grounding the wire, while the buzzer is on, would turn the buzzer off because the coolant in the radiator completes the ground. If it is in fact the opposite, then I have a faulty sensor.
What would be great to have clarified is whether grounding the circuit turns the buzzer on or off. Like I said, I thought grounding would turn it off. Grounding the circuit does nothing to turn the buzzer off.
BTW my Add Coolant light is on otherwise I'd be checking the oil level sensor.
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You are correct.
The sensor pin sees ground when it's wet.
The most common failure is right where the wire comes out of the plastic plug.
There is no strain relief there so the copper inside can crack.
Pull the plug out of the radiator & clip an ohmmeter on the sense pin & the connector.
Wiggle the wire & see if continuity drops.
The sensor pin sees ground when it's wet.
The most common failure is right where the wire comes out of the plastic plug.
There is no strain relief there so the copper inside can crack.
Pull the plug out of the radiator & clip an ohmmeter on the sense pin & the connector.
Wiggle the wire & see if continuity drops.
Last edited by SureShot; 08-02-04 at 02:58 PM.
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i was going to say check the sensor and see if its still good. get some clr and clean the copper wire off and then stick it back in and see. if that doesnt work then good luck to ya lol
#12
Originally Posted by SureShot
It's has to be getting air in the system from somewhere.
I had a brand new radiator once with a small dent in the filler seal lip.
Even a new cap would not seal.
I also have had a cap whose recovery valve didn't clear the inside of the filler neck.
I had a brand new radiator once with a small dent in the filler seal lip.
Even a new cap would not seal.
I also have had a cap whose recovery valve didn't clear the inside of the filler neck.
#13
i am having the same problem, but not as serious as u all, but it still beeps once in a while, but i have coolant and water leakin out of the sensor tho. and when i add coolant again and the beeper stop beepin. i hope i can get a bit advice from u all too.
thx
thx
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do i have to take off the plastic under body on my 91 NA to get to the bolt to drain the radiator? also where exactly is the bolt to drain it?...
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Originally Posted by SureShot
You are correct.
The sensor pin sees ground when it's wet.
The most common failure is right where the wire comes out of the plastic plug.
There is no strain relief there so the copper inside can crack.
Pull the plug out of the radiator & clip an ohmmeter on the sense pin & the connector.
Wiggle the wire & see if continuity drops.
The sensor pin sees ground when it's wet.
The most common failure is right where the wire comes out of the plastic plug.
There is no strain relief there so the copper inside can crack.
Pull the plug out of the radiator & clip an ohmmeter on the sense pin & the connector.
Wiggle the wire & see if continuity drops.
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Originally Posted by z4csl428
do i have to take off the plastic under body on my 91 NA to get to the bolt to drain the radiator? also where exactly is the bolt to drain it?...
edit: This is from my 1990 vert. other models may be slightly different.
Last edited by Dokta; 08-03-04 at 02:28 PM.
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Just wanted to post that I am a moron. While poking around last night looking for a missing vacuum line I found a black connector with a black or brown wire with a white stripe. Realizing that it had foam on it that would have been from around the radiator (sealing the radiator to the radiator support) I looped it up and it just reached the coolant sensor. Doh! I had another wire with a white clip connected to the black clip of the coolant sensor. Quickly tested the continuity and then hooked it up. No more buzzer!!
So don't be a dumbass like me.. hook up the correct wires.
So don't be a dumbass like me.. hook up the correct wires.
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