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-   -   ADD COOLANT buzzer !!?? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/add-coolant-buzzer-903984/)

illustrated_FC 05-17-10 11:34 AM

ADD COOLANT buzzer !!??
 
hey guys so i was driving to a rotary meet and out of no where my "add coolant" light came on with that annoying buzzer.

i checked the coolant tank and i did have coolant but seems like all the coolant from the system back flowed to the tank.

do any one have any idea what i could be.

Spectrum24x 05-17-10 11:53 AM

mine drives me crazy anytime i take a long curve i guess all the coolant sloshes to one side and it goes off..

Unsupa 05-17-10 12:03 PM

you might want to do a search for 'champagne test'...

the easy fix is maybe your cap needs replacing, either from the neck or the overflow tank.

the not so easy fix is tearing down your motor because it has a blown coolant seal and the exhaust gases are getting into the cooling system and blowing your coolant out.

I had to do the hard fix on 2 occasions.. hopefully you'll have more luck than I.

Saki 05-17-10 01:22 PM

Blown coolant seal - how I lost an engine...

Len-Len 05-17-10 01:27 PM

This happened to me on two of my FCs. Both were a bad connection at the coolant level sensor on top of the radiator. The wires began coming apart at the sensor. Soldering fixed it on both cars. I would still do the champagne test that Unsupa said just to be safe. Blown coolant seals fucking blow. Been there before.

iamsisyphus 05-17-10 02:11 PM

I had the same problem. Fixed it by putting dielectric grease on the sensor connection at the top of the radiator.

funkjaw 05-17-10 02:13 PM

Do a basic run down of your cooling system. Check for leaks, pressure test, you can replace radiator cap, check for bad connection to the sensor at the top of your radiator, make sure it is full of coolant, etc...

MmSadda 05-17-10 02:24 PM

1. check that your system is full at the radiator, at the upper fill cap, and that you have enough coolant in the overflow tank.
2. Check to make sure the wire that runs up to the sensor on top of the radiator is intact.
3. See if you're loosing any coolant on the ground/see if there is any in the engine bay.

calpatriot 05-17-10 11:58 PM

Take a coolant sample to a radiator shop and have it chemically checked for the presence of exhaust gases... if present, you have a blown coolant seal, and the exhaust is getting into the water jacket and pushing the coolant out into the overflow tank... been there done that...

Thundercatzzz 05-18-10 12:55 AM

Hey guys, I think I have the same problem. Are FCs supposed to eat up coolant? because my light comes on every once in a while, and there is no leaking. How should I check for a blown seal myself?

funkjaw 05-18-10 10:37 AM

^ Read the post above yours.

Rotary13B1 05-18-10 10:40 AM

mine came on this weekend...



>>>busted heater hose!

Good thing I was just rolling around the block.
Good save!

AmviciousRav 05-18-10 03:56 PM

I just had this problem and thought I had blown my motor (well actually smog n go did)...

ended up being a stuck thermostat+ bad clutch fan + a busted filler neck that was sucking in air and pushing my coolant out

now it's back to normal but it scared the shit outta me (I was telling everyone I'd be going v8 in 3 months haha)

illustrated_FC 05-18-10 08:26 PM

^ lol. oh man good thing it wasnt the motor.

i think my problem is probl the thermostat because on hills it goes on.

but i just don't like how the anti-freeze changed color in the tank( to a Brownish-green color).

how would you know if your clutch fan is bad ?

the coolant senor ! maybe too i will check that. that usually goes ??

Originally Posted by calpatriot (Post 10002768)
Take a coolant sample to a radiator shop and have it chemically checked for the presence of exhaust gases... if present, you have a blown coolant seal, and the exhaust is getting into the water jacket and pushing the coolant out into the overflow tank... been there done that...

fixing this means taking the motor out and changing the seals of the housing ?

Thanks guys for the feedback.

jinxed4dub 05-18-10 09:01 PM

fan clutch has an easy test warm your car up to operating temp and turn the fan if its stiff to turn its good. as long as its not free wheeling your basically good.

yes if your coolant seals are blown you need to do a full teardown on the motor and rebuild it. its a bit more than just replacing the seals.

illustrated_FC 05-19-10 06:57 PM


Originally Posted by jinxed4dub (Post 10004644)
fan clutch has an easy test warm your car up to operating temp and turn the fan if its stiff to turn its good. as long as its not free wheeling your basically good.

yes if your coolant seals are blown you need to do a full teardown on the motor and rebuild it. its a bit more than just replacing the seals.

how long you think i can run with the coolant seals bad ?



i was looking up the rebuild kits thats thats almost 700$ for a bunch of seals replacement is that the right approach ?

misterstyx69 05-19-10 08:44 PM

did you ever think of checking your fan belt?
If the belt is loose it will Not allow the pump to work and "bingo"!..hot engine,overflow City.

jinxed4dub 05-20-10 01:32 AM


Originally Posted by illustrated_FC (Post 10006336)
how long you think i can run with the coolant seals bad ?



i was looking up the rebuild kits thats thats almost 700$ for a bunch of seals replacement is that the right approach ?

I wouldn't just jump to saying you have bad coolant seals. look at the radiator cap, fan clutch, water pump, thermistat, radiator. usually you will have ALOT of white sweet smelling smoke coming from your exhaust if your seals are bad.

illustrated_FC 05-20-10 04:52 PM


Originally Posted by misterstyx69 (Post 10006580)
did you ever think of checking your fan belt?
If the belt is loose it will Not allow the pump to work and "bingo"!..hot engine,overflow City.

maybe could be the belt. Did you mean the tension on the belt is loose so would need a new belt or find a way to tighten the belt?


Originally Posted by jinxed4dub (Post 10007142)
I wouldn't just jump to saying you have bad coolant seals. look at the radiator cap, fan clutch, water pump, thermistat, radiator. usually you will have ALOT of white sweet smelling smoke coming from your exhaust if your seals are bad.

maybe your right. I dont have white smoke coming out. it only smokes the first 5mins after start up. and than no more smoke.

the thermostat in the located in the water pump? not sure.

I'm def looking into changing my oem radiator to a koyo electric one.
with a switch for cooling after the car is off.

jinxed4dub 05-20-10 07:02 PM

thermistat is on the waterpump housing, you'll find it at the top radiator hose on the waterpump housing. easy to change takes 20 minutes tops for anyone to do it. 5 if you've changed one before. buy an OEM themistat. its alot more expensive but doesn't all of a sudden go bad after 4 months. POS stant. I caught it just in time but started overheating in less than 1 mile.

duo2999 05-21-10 12:07 AM


Originally Posted by illustrated_FC (Post 10006336)
how long you think i can run with the coolant seals bad?

depends on the condition and how fast they deteriorate.

i had a blown coolant seal on the last engine, but it also turned out to be a piece of my front iron missing. i drove around on that for almost a year before it did not become reliable as a daily mode of transportation.

Thundercatzzz 05-22-10 12:39 AM

so I dont have a blown seal.. and i just added coolant, but the buzzer keeps going off, so I was wondering if I could take a certain fuse out to disable that buzzer, without other major electical going out too.

jinxed4dub 05-22-10 02:14 AM

have you checked your oil? oil buzzers the same. what kind of radiator setup do you have do you have a radiator cap on top of the waterpump, and one on the radiator, or just one on the waterpump. on mine I just have the waterpump fill spot and there is no cap on the rad. if thats how yours is what I do is just raise the front passanger side on a ramp. riding up a larger curb with that tire will also work in a pinch. theres a plug on the radiator nest to the top hose, I unscrew that and fill till water poors out, then I put it in top it off and that seems to work.

If its the sensor it self I'd just ground it till you get a new one. make sure you have coolant every morning to be safe.

DaBrkddy 05-22-10 03:36 AM

Don't disable the buzzer... That's just asking for trouble. If you notice coolant is going into the overflow but not going back to the system, check the radiator cap. Also check the line that goes from the filler neck to the overflow tank for leaks. Also very important: check the plug on the coolant level sensor (it's a corroded bullet connector on my car). Clean all the corrosion off of it or replace it.

illustrated_FC 05-23-10 10:15 AM

in the radiator cap, what would i need to look for ? is it just better ordering a new cap (seals might be gone)

coolant lever sensor that is located on the overflow tank?? or somewhere in the radiator?

BTW i was thinking about changing the radiator to an electric one with an electric dual fan or single....?

any feedback on this set-up for recommendations ?

also i would like to add a separates switch to turn it on while the car is off for the electric fan im guessing....would that be possible ??

Thanks for the feedback.

Cordt 05-23-10 10:39 AM

if your stock fan works dont install an electric fan. its pretty much completely pointless unless for some reason you need the extra room.

yes its possible to add a switch to turn an electric fan on when the car is off

start your car and let it warm up (have someone sitting inside it maybe to make sure it doesn't overheat or anything if this is an issue) and just watch under the hood to see if any coolant or steam is coming out of anywhere. it's pretty simple.

if there are no leaks and the level is still going down, you're burning it.



my car last winter lost like maybe 1 liter of coolant in 3 months, yet lately it's been totally fine.. i still haven't figured that one out.

jinxed4dub 05-23-10 04:01 PM

coolant level sensor is the part dead center of the top of the radiator with a wire coming off. could also be broken.

fstbckgt 05-23-10 05:11 PM

my coolant sensor actually worked after the 1j swap, but once I switched to an aftermarket rad it constantly went off. so i pulled the cluster, found the little shit buzzer and tore it out. a good solution....if you dont have a rotary

RACE IN PEACE JIM NOEL 05-23-10 10:05 PM

if you have a coolent seal problem do the block weld mod if you cant afford a rebuild.i did it to my n/a and ive been driving 40 miles a day for 8 months and havent had a coolent problem! it caust under 20$ and only took a day to complete the fix.but make sure you do it right.

Cordt 05-23-10 10:10 PM

that is some cool info....ill definitely try that out if i ever have a coolant seal problem!

Thundercatzzz 05-26-10 10:24 AM

Thanks for all the help guys, I think it might be a bad thermostat, because the radiator cap is leaking coolant and i dont think its a blown seal. I'll try blocking the weld mod if that dosent work out.

illustrated_FC 05-28-10 08:10 AM


Originally Posted by RACE IN PEACE JIM NOEL (Post 10014205)
if you have a coolent seal problem do the block weld mod if you cant afford a rebuild.i did it to my n/a and ive been driving 40 miles a day for 8 months and havent had a coolent problem! it caust under 20$ and only took a day to complete the fix.but make sure you do it right.

sounds interesting. how i would i go about doing that ?


Originally Posted by Thundercatzzz (Post 10019429)
Thanks for all the help guys, I think it might be a bad thermostat, because the radiator cap is leaking coolant and i dont think its a blown seal. I'll try blocking the weld mod if that dosent work out.

Yea check also the sensor, and water pump as well. Thats what im going to do soon. I got the car with 181xxx miles and idk whats been done to it and how old these parts are.

so to play on the safe side change so they dont go. goodluck

Thundercatzzz 05-28-10 07:39 PM

My car only has about 72k miles so Im not sure about all that yet. I just got the new thermostat, but it dosent look like it fits anywhere. Can someone tell me? or a diagram would be better. Thanks for all the help. Its a murray plus thermostat if it makes a difference

Cordt 05-28-10 08:46 PM

nevermind that picture wont work for some reason

its on the front on the waterpump housing just to the lower right of the fan (when facing the engine)

jinxed4dub 05-29-10 07:46 PM

change the thermistat just so its been done. it should be replaced every year. rather than let go bad, and possably overheating your engine.

but since your leaking out the cap its probably the radiator cap itself. I'm pretty shure this was mentioned. but theres seals in there.

illustrated_FC 05-31-10 07:53 AM

okay sounds good. When you get a new electric fan, does it come with a module temp control ?

illustrated_FC 06-01-10 10:49 AM

so i notice that...we have an oem electric fan in front on radiator. is there a way to make a separate switch to turn on the fan when the car is off for 5min to cool down more. Cause i feel after a long ride car is too hot.

Manuel switch is fine.

below is the pic from the FMS that shows the 10" blade electric fan. Thanks.


http://img717.imageshack.us/img717/8893/73086501.jpg

Uploaded with ImageShack.us

illustrated_FC 06-01-10 10:49 AM

whoa. sorry pic came out so big . lol

TrboSpdAnt 06-01-10 01:39 PM

I've had the same problem... Many a time it comes down to burping it, but when that didn't work, I just yanked the stupid piezo.

lowjack7 06-01-10 02:10 PM

lol did you draw that yourself? very talented

TeamFervor'sSavannah 06-01-10 03:56 PM


Originally Posted by iamsisyphus (Post 10001585)
I had the same problem. Fixed it by putting dielectric grease on the sensor connection at the top of the radiator.

This. I had a bunch of gunk buildup on my connection and it wouldnt shut up. Cleaned it, works fine. My connection wires were also a culprit. They were old and rusting, so i spliced in some new aluminum connectors, win.


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