Cihuuy

to make a long story short... i got stock on the highway due to the add coolang light & buzzer turning on! But the weird thing is that the temp was normal. So i waited nearly an hour before i open the radiator cap and the water is still full!!! WTF!?! Checked everything for leaks and nothing, nada, zero!

I drove it home fine without no ill and weird behavior. But hearing that buzzer just makes me sooooo Fu%$ing Nervous... hahaha

5 hours had passed and i rechecked the collant level and its full!! The add coolang light and buzzer is still turns on even if the car is cooled down.

I did a search and i would assume its the coolant level sensor!?! How can i go about to change this? tanx in advance

David Beale

Where are you checking the coolant level, overflow tank or filler neck? If it's the overflow tank, you may need to just replace both caps. The one with the spring goes on the filler neck, the one without on the AST.

Cihuuy

on top of the caps, ill try to burp the system as well. Tanx for the input. But i did state that the buzzer and light still turns on even when the engine is cold..

the wire is still attached bt i could not see where it is going behind the airpump?? anybody has a pix, where the wire is going?? im going to chek that in the morning

highspeeddubbin

check the wiring on the sensor, mines went loose once down near the plugs and once right off the sensor. same problems though, temp stayed fine

Androidmj

NOOOO...don't do this, the one with the spring goes on the AST the one WITHOUT a spring goes on the filler neck...hence it has fillercap written on it

DamonB

Androidmj is correct. The overflow bottle is connected to the AST neck, so that is the one that gets the vented cap. The filler neck on the engine should be an unvented cap.

Cihuuy

thanx for clarifying that... but both of my caps has springs in it!!! its 1.3 pressure i think?! would that cause anything bad?

and where does the wire of the coolant sensor level go to?? i read somewhere it is near the plugs but where is it exactly??

clayne

The wire is wrapped within the main engine harness. It then takes a 90 degree angle and heads along the same direction as the ground on the rear housing. It skirts near the coils and connects to a black connector coming out of the driver side harness, down near the spark plugs.

On some people's cars it may head from the tstat along the lines running to the OMP, and then down into the driver side harness.

Anyways, look for the black 2-pin simple plug on the driver-side harness.

birdy01

no to hijack or anything but my cars been doing the same thing too and i called the guy i bought it from and he said he got it bypassed so theres not AST and I have a Koyo radiator so iono wats up with my coolant light as well

WaLieN

It could be your coolant level sensor... mine did that when it cracked at the thread.

Cihuuy

Tanx bro... but im totally not getting you maybe coz its late here!

driver side harness meaning on the firewall near the spark plug rite?? and tstat??

i have a RHD so i suck in imagining my car is a LHD.. hehe

BLKTOPTRVL

Last month I drove my TT 300 miles to where I am working. No problems...
Last Saturday, I drove another 500 miles to Nashville and back...

60 miles from 'home' my buzzer sounded and the light came on. I cut off the ignition right there and then and drifted to the side of the road.

Opening the hood, I saw no signs of leaking or busted belts, so I started it up again. The buzzer did not sound again so I drove the rest of the way home - keeping an eye on the temperature gauge.

As soon as I got back into town, the buzzer started again, but the car was still running at normal temperature - according to the gauge - which I know it is not accurate.

The next morning I put around 20 oz of water into the engine and it ran normally again for the next 4 days.

Wednesday evening, the buzzer came on again. I opened the system and put another 10 oz of water in. Five minutes later, another buzzer, 20 more oz.

After reading a few posts, I saw that others who were having this problem were hearing the boiling/gurgling noise, and I realized that I have been hearing that from months, but did had not associated it with a problem.

This morning I topped off the system, (another 20 oz) and drove straight to an auto parts store where I could get a new cap for the AST. After letting the engine cool a little while getting the new cap, I opened the hood and it sounded like a tea-kettle on the boil.

I added another 10 oz and put the new cap on.

I drove to work and when I shut down the engine I could still hear sounds in the engine, but not as bad as before.

At noon, I cracked the system and added still more water.

After driving around town this evening to check it out, I parked the car and I could not hear a sound coming from the engine. Not a snap, click, pop, boil, or gurgle!

I am hoping this was the cure. Tomorrow, I will drive the car home (300mi), replace the hose to the turbo (I believe I already got all the rest of them) , and drain, flush and refill with fresh coolant and distilled water.

I just wanted to add my experience to this thread.

BLKTOPTRVL

Addendum:

This morning I went out to add more water and both the AST and filler neck were to the brim!

Thanks to all of you for your postings. Just a quick read saved me a lot of aggravation.

BLKTOPTRVL

Drove car home the weekend. Went 297 miles without a warning. Stoped to get groceries and drove the last 3 miles home. Warning!

Next morning topped off the car. Discovered that the overflow has a huge hole in it - water pours out as fast as I pour it in.

Drove car back to work tonight. No warnings Will get a new overflow tank this week. It looks like it will be a PITA to install it.

NINjaX7

My coolant leaks as well, and my overflow bottle doesn't not fill up with coolant. I was wondering how you guys did it. I filled up the AST and the t-stat all the way. but i didn't bother with my overflow bottle. Anyways i had someone come over and check out my car because i didn't know what to do about the leaking coolant and the buzzer going off. The buzzer would always go off whenever i switched the car on. He told me that something as simple as a small air bubble can pass over the sensor and it wouldn't ground the wire thus resulting in the annoying *** buzzer. But the way the filler neck is made (the one without the springloaded cap) and along with where the add coolant wire is connected, it looks like it would be rare to have an air bubble reach that spot since it's at the very bottom of the housing. At the moment i discovered my problem and it's a cracked hose at the bottom of my radiator, and I'm just switching the radiator out with a slightly used stock one just in case it is the radiator. I attached a picture from the robinette site.

nycrx7

BLKTOPTRVL,

quick question. How are you putting coolant/water in so quickly? I had a bit of a problem with the coolant buzzer going off, and I had to burp my car for a good hour almost, of repeatedly burping, running, burping again, etc... The first time, I only burped it twice, at which point, I guess all the air hadnt gotten out, and my buzzer went off. So perhaps possible tha tyou really arne't burping the car properly?

BLKTOPTRVL

Quickly?

I do not fill the car until it has been sitting for a while, either overnight, or while I am in the office working. The only time it went off when I was far from home (trip to Nashville), I just kept an eye on the temp while I scooted home. When I ran the car to the parts store, it was only a mile or two away and the car never got hot enough to worry about getting scalded - this was the first thing in the morning.

It never was very low on fluid at any time. Each time the warning did go off, there was just enough gone to uncover the sensor.

I would never even attempt to open the system when it was at operating temperature.

BLKTOPTRVL

When I burp the car, I do it over a long period. I give it enough water... Run it, cool it, run it, cool it. Putting more fluid in each time it is cool. This obviously was not working when I had the bad cap.

nycrx7

ok.... was just asking. Doesn't burping also mean you run the car with the cap off? too get the air out... and keep adding with the cap off and car running?

Meiogirl

iTrader: (2)

follow the casted piece you pour coolant into. its a black look screw about an inch in diameter facing the front of the car, it has a wire coming off it.... its not by the spark plugs.