HELP!!!!!!!!, one of those overheating problems Options

[alltracman78]

well i removed the old thermostat and tested it....it was faulty...so i bought a new one replaced it, ran it and its not over heating but had it running for 30 minutes and the fan hasn't come on :| so i'm gonna take it to a shop and check and see.....theres no fuse for the fans....i tried to look, only relays and they cost 40$ :|

hhhhmmmm thermostat sounds kinda something like something I said... interesting. I might not know everything but I'm not an idiot.

Congratulations, you got the right answer with a totally incorrect method.
What do you think would have happened if she used your way and it wasn't the therm?
And what about next time, when it's not the therm?
There's going to be a lot of wasted money on thermostats....

And for the record I neither said nor insinuated that you were an idiot, so please don't put words in my mouth.

Not knowing something doesn't make you an idiot. No one knows everything, and there's always more to learn.
Instead of getting worked up because I pointed out that you gave the incorrect advice, learn from it.
I've been wrong before, and had it pointed out. Instead of being mad, I took the time to understand WHY I was wrong, and didn't make that mistake again.

Shanon, glad to see you got it solved.

This post has been edited by alltracman78: Mar 1, 2008 - 1:13 PM

[dabazied]

QUOTE(politicsareevil @ Mar 1, 2008 - 2:54 AM)


QUOTE(Theshanon @ Mar 1, 2008 - 12:53 AM)

well i removed the old thermostat and tested it....it was faulty...so i bought a new one replaced it, ran it and its not over heating but had it running for 30 minutes and the fan hasn't come on :| so i'm gonna take it to a shop and check and see.....theres no fuse for the fans....i tried to look, only relays and they cost 40$ :|



hhhhmmmm thermostat sounds kinda something like something I said... interesting. I might not know everything but I'm not an idiot.




Congratulations, you got the right answer with a totally incorrect method.
What do you think would have happened if she used your way and it wasn't the therm?
And what about next time, when it's not the therm?
There's going to be a lot of wasted money on thermostats....

And for the record I neither said nor insinuated that you were an idiot, so please don't put words in my mouth.

Not knowing something doesn't make you an idiot. No one knows everything, and there's always more to learn.
Instead of getting worked up because I pointed out that you gave the incorrect advice, learn from it.
I've been wrong before, and had it pointed out. Instead of being mad, I took the time to understand WHY I was wrong, and didn't make that mistake again.

Shanon, glad to see you got it solved.

Meh, $9 aint bad though.

[Theshanon]

thermostats here, with empyolee discount go for 30$ with gasket.....problems not solved though...after plugin back the sensor and topping off the coolant, engine temp stayed at level, heater worked, but no sign of fan turning on (car ran for a good 30 minutes).....at least i can see its something electrical but there's no shops i know open at this time for me to take my car in....

This post has been edited by Theshanon: Mar 1, 2008 - 5:20 PM

[alltracman78]

If the fan runs with the fan switch disconnected but won't run with it connected the switch is bad.

Did you run it long enough for the temp gauge to get a good bit past the middle?

[Theshanon]

it enever got past the middle, i took it out for a drive last night and emptied quarter tank, the temp. stat didn't move....mind you that its very cold in canada right now (well its kinda getting to the plus numbers) i'm thinking to disconnect the temp. sensor so this was i have the fans running constantly?

btw thanks so much for your help so far and being there to check the up dates hahaah and thanks to everyone else who took there time! but still gotta deal with the fan issue.

[alltracman78]

If it's real cold the fan won't necessarily come on.
The lower portion of the rad needs to get a certain temp for the switch to turn off [turning off turns the fan on].

Unplugging the switch was to confirm the fan motor and power circuit were working correctly. If you had unplugged it and the fan hadn't ran, that would indicate a problem in the power side of the circuit.
Leaving it unplugged will cause the fan to run constantly.
More wear on the fan and longer for your engine to heat up to operating temp.
Good for an emergency fix, but not long term IMO.

If you're staying in the middle and you're not loosing coolant you're probably ok.
But keep an eye on the temp and the fans until you can confirm the switch is working fine.



And you're welcome

[scothaniel]

With the temps below 40F in Michigan, I dont think my radiator fans are coming on either - especially while driving. The cold air is enough to keep the water temperature in the radiator low. You would need to block air flow to the radiator (put some cardboard in front of it), or maybe let the car idle at higher rpm for a long time in order to get the radiator temp high enough to trigger the fans.

To test the switch according to the service manual, you would do the following:
Drain the radiator, unscrew the sensor, heat up some water (simmering), partially submerge the sensor while checking continuity with a multi-meter. But considering the same sensor was used on nearly every Toyota car in the 90's, it would be easier to just get another one from the junk yard.

Or, just dont worry about the fans until spring!

[Theshanon]

this is still weird man, my gauge hits the red H zone like i'm hitting red line with my rpms....as soon as it hits red zone it stays there for 3-4 seconds and quickly jumps back to normal temp =S

[stephen_lee]

still does that even after you replaced the therm??
mine did the same thing, but it WAS leaking coolant from a freeze plug.

Are you still losing coolant?

[Theshanon]

i loose coolant but i don't see it going anywhere? i leave my car running for like 30-45 minutes in my garage and i see nothing :| but i'm not loosing much now. freeze plug?? what happen?

[stephen_lee]

it just corroded out. you'd know if it was that. huge water show when i parked lol

[alltracman78]

this is still weird man, my gauge hits the red H zone like i'm hitting red line with my rpms....as soon as it hits red zone it stays there for 3-4 seconds and quickly jumps back to normal temp =S

You might have air bubbles in the system.
Or the temp gauge circuit is bad somewhere.

[Batman722]

there might be a leak or it might be even worse - change your oil - see if there is any coolant in there, it would look like coffee pouring out. If so, headgasket.

have you even bothered to do what I said ?

and why the f would you be

hitting red line with my rpms

?

you probably have a bad headgasket and you drive like an idiot

[Theshanon]

listen bat bwoiiiiiii i appreciate your time and advice but i do not tolerate your lack of intelligence towards my driving skills, you have never seen me drive therefore not knowing if truly i (qoute on qoute) "drive like an idiot"... plus i said (qoute on qoute) "hits the red H zone like i'm hitting red line with my rpms" did you happen to catch the "LIKE"?? =)

[Batman722]

what's a "bwoiiiiiii" ?

[Theshanon]

anyways...

this is still weird man, my gauge hits the red H zone like i'm hitting red line with my rpms....as soon as it hits red zone it stays there for 3-4 seconds and quickly jumps back to normal temp =S

You might have air bubbles in the system.
Or the temp gauge circuit is bad somewhere.

so i'm gussing i'd have to flush out my cooling system and refill my coolant?

[scothaniel]

Any funny smell or coloration in the exhaust? If so, check your oil as batman277 said.

To bleed the air out of the cooling system, just let the motor warm up with the radiator cap off and the heater on full blast, and keep toping off the radiator. BE CAREFUL - the coolant temps will be around 170 degrees when the engine is hot, so dont burn yourself.

Did you notice if the radiator fans kicked on while the car was in the garage for 30 minutes?

[GriffGirl]

I always try the super simple stuff first - you already tackled the thermostat, so that's taken care of.

How old is your radiator cap? If it's old and doesn't pressurize, you'll overheat. Get a new cap, run the car a few minutes (literally, like 2 or 3 minutes should do it) w/the cap off (to get all the air out of the system), shut it off and put the new cap on. It's a four-dollar fix that won't break the bank if it's the wrong fix.

[alltracman78]

i loose coolant but i don't see it going anywhere? i leave my car running for like 30-45 minutes in my garage and i see nothing :| but i'm not loosing much now. freeze plug?? what happen?

Ok, hold on.
Are you STILL losing coolant, or is that fixed?
Can you see where it's coming from?
Have you gotten the fans to run at all?


To "burp" the system do what Scott said.
Having the car on an incline [front up] helps too.
If the gauge moves real fast and intermittently you probably have an electrical problem.

This post has been edited by alltracman78: Mar 6, 2008 - 9:57 PM

[mahem109]

Hey all, I have a 95 gt, 5fse, and guess what? it doing the same thing. I purchased a new radiator, seeing how mine split ever so slightly along the top seam. Thinking i fixed the problem, I continued driving it just to find myself losing coolant. Where does it go, im not sure at this point. There is no white smoke coming from the exhaust, there is no leaking of any sort under my car or as i am driving it. The oil is spotless with not even a trace of water in it. The car has no sign of power loss, ruff idles, or any other sign of a cracked head or blown head gasket! When you fill the system it runs fine, fans work when it reaches a certain temp, like it should, and temp maintains a perfect steady setting. But drive it about 80-100 miles and adding more coolant again. Seems like coolant last longer at lower speeds, which indicates to me that it must have a blown headgasket and probably pressurizing the coolant system. Any thoughts on this one?