Ok my problem listed below in order of events.

At stoplight coolant needle jumped a few notches and then went back to normal position.

Stopped the car after my drive coolant buzzer only comes on when car is idle and when the ignition is switched to the On position.


Drive back home, went directly to a NAPA auto store to get some coolant.
Took off the AST cap and coolant started to spew out. Everything settled down after about 30 seconds.

Topped off the coolant, and burped the coolant hose. Added some coolant.
Started the car up with the AST cap off, coolant started to spew out....

Shut car off. Top it back off and burped coolant hose...

Drove home coolant buzzer came on once at a stop light while the car was idleling.

Coolant guage appeared to be in the normal area.

Got home stopped the car in my driveway for 30seconds, buzzing came on again.. drove forward into my garage buzzing went away...

Turned the car off put fans on... buzzing came back on..


Any Suggestions??

 

Correct me if im wrong but you're NOT supposed to fill through the AST.

You fill through the filler neck, hence the name "filler" cap.

Btw, i had the same problem as you last week, seems like this coolant situation is like bad luck this time around for us FD's. lol

 

Cooling system pressure test.

 

Ok so I should be adding coolant to the Overflow tank?

could you direct me to a coolant presure tester?

 

Temperature gauge stays normal
No white smkoe out tail pipe.

everything seems fine to me in the "seals" department of the engine.

Im guessing a possible bottlneck of air in the system.

Whats the best way to get the air out of the system?

What was that method people use with the Lisle filler funnel?

 

No, you're gonna "fill" coolant at the "filler neck".

 

ok
and thats the cap in the middle of the engine and it sits on top of the thermostat?

 

Yes sir.

 

Ok, so the buzzer went off and you still drove it home? Not the smartest idea. Rent a pressure tester from autozone and do not drive the car. You should never drive a car that has a problem with the cooling system.

Did you check the level at the filler neck after the car cooled off? Was it low? That's what triggers the buzzer is low level at the filler neck/thermostat housing.

Sounds like you have a leak somewhere.

You don't necessarily need the lisle funnel. Stick a tight fitting radiator funnel in the filler and put some coolant in it. Run the car and watch the air bubble out.

 

Had something like this happen to me this past summer. Best to look for those leaks now before it gets really bad. So pressure test and work from there.

 

No leaks spotted...

could it be internal ?

 

It could be if you know for sure you arent leaking on the floor and you notice missing coolant.

Also you can look for abnormal cold startups and excessive white smoke from the tailpipe.

But stay positive and dont think that route lol

 

dude, you need to let your car cool down before you add coolant. if you top it off while its hot 1.) coolant will spew out cos its hot & under pressure and 2.) if you do add coolant anyway when its hot, when the hot coolant cools down and contracts once again you will once again be low.
the AST gets air out of the system, hence the name Air Separator Tank.
you need to let your car COOL DOWN, add coolant to the overflow tank and the coolant filler neck - when car is COOL.
start car up, let it get to temp or untill thermostat opens. let it COOL DOWN again, add more coolant if you can.
if your buzzer still comes on after that either your coolant level sensor is screwed or you have a leak or coolant seal failure.

 

There hasnt been any indication of any coolant on the ground under my engine.

i dont notice any excessive smoke other then the smoke produced because i dont have a cat..

 

Well, you're either dense or stubborn. Cuz several people have suggested that you pressure test.

If you don't want to test and look for leaks, then the only other option is the sensor circuit. It's simple to test. Look it up in the FSM.

This is all pretty basic, so if you're having trouble I would tow it to a shop and get it fixed ratehr than risk the engine.

 

Could it be possible that my thermostat has kicked the can?

If this is the case, what are the effects of running no thermostat?

 

Turns out there was no coolant visial in the filler neck

 

That will give you the buzzer. Now, when you fill it, squeeze the radiator hoses to push air out. If the level goes down after you squeeze and let go, keep topping it off. Do this until the level does not go down.

Now, if you open it back up in a day or two (of driving) and the level is not still at the top; you have a problem.

 

Added some coolant today.

With the funnel.

Turned the car on. and there were foamy white suds comming back into the funnel.

Alot of coolant has come back into the funnel, with the car on. is this normal?

I am letting the car warm up to operating temp to see what happens to the extra coolant.

Ok the car has been on for about 10 minutes.


There was about 1/4 of fluid in the isle funnel to begin with.

Now the coolant that i mentioned that is comming out back into the funnel does this to about half way full of the isl funnel and then gets sucked back down. There is frequent bubbling during this sequence also.

How long should i let the car do this for ?

Will the car eventually suck all of the coolant in from the funnel?

 

Car has been on for about 15 minutes now.

There seems to be a continuous patter that i can see.

Irradic bubbling, then the coolant level rises to abotu 3/4 of the isle funnel...

then coolant gets sucked back in and it goes back to the level of coolant that I first put in ( 1/4 of the lisle funnel)

and this keeps repeating itself....

How long should I let it sit before I turn the car off?

when i turn the car off. should I let the funnel stay in the filler neck and let the coolant sit in there as well?

should i rinse and repeat a few times today?

 

Ok my mods are
full non sequential
Power FC
Full exhaust no cat
intake
DP

is it normal for these cars to drink coolant a bit here and there and thus having us have to top them off once in a while?

 

for some reason coolant has shot out of the funnel and all over my car.

When i start the car it revs up and full the funnel with coolant/distilled water until it wants to over flow.

when i turn the car off, it sucks about have of the funnel back in and sits there

 

Top it back off, squeezing the radiator hose as I mentioned. Once the level is steady, put the cap back on and take the car for a 10-15 minute drive. During the drive, turn the heater on full. Come back and let the car cool. Once cool, open the cap again and check the level. If it's still at the top, you are fine. If not, start over from the top filling and squeezing, then take it for a drive with the heater on full. One or two iterations of that will get any excess air out of the system.

If that fails and you are still getting the coolant buzzer and low coolant in the filler neck, start with the following:

1. New filler neck and AST caps
2. Pressure test the cooling system

 

Topped off the fluid.

Took it out or a ride, coolant buzzer came on only after 20 mins of driving.
It would come on go off... come on go off

every few mins or so

then finally went off for good..

Got home sat in driveway...buzzer came on and didnt turn off..

I will wait until the car is cooled down to add more coolant.

 

Btw, do you have the commander for the PFC. If so, what's the PFC read for water temp. It shouldn't get above 98 C or so looking at ur mods. Mine never gets above 87 C or so because I've got a few cooling mods.

If the car keeps requiring coolant and it's not leaking, then, it's being burned. If it's being burned then uh oh....I sense a bad coolant seal and....uh....and u need a new motor...Let's hope it's a pin hole leak and not a motor issue. Pin hole leaks are a pain in the *** to find. You can always pull the plugs to see if there is coolant coming out of combustion chambers....

Unless you have ALOT of air in the system, it shouldn't need to be topped off like you're doing. I would pressure test the system as everyone has been stating.

But isn't it true that once the needle on the stock gauge starts moving upwards...it's too late for your motor....