1990 Supra running hot

My 1990 Supra is running what I consider hot. The temperature needle is exactly in between H and C and I can feel the heat coming out from the edges of the hood. The engine temperature never fluctuates regardless of outside temperture or how long I drive. I had the coolant flushed and a new thermostat installed last year but still runs hot. I just replaced that thermostat with a 180 degree one and that made no difference. The one I took out was 195 degree. I am thinking that I may need a new water pump which has never been replaced. If I warm up the engine with the radiator cap off should I see the coolant flowing when I look into the radiator? The car has 69,800 miles and I had the head gasket replaced about 20,000 miles ago. I am selling to my boss and want to make sure everything is ok first.
Thanx for any info.
Dan

Right in the middle or just slightly below is where Toyota intended it to be. There is alot of heat created by everything under the hood and when your at a standstill the only place it can vent it from the cracks by the fenders.

Hi,

Whenever I drive my 1990 Supra at 80 mile per hour for about 30 mintues at a time. The cooliant from my researve bottle will drain onto the ground from the small drain hoes. I can not understand why this is happening because I had replace the water pump, timing belt, thermastat and flush the radiator. Is there anyone out there who can help me understand why this is happening so that I may get it fix?

Thanks

Tony

Is there anyone who can explain why my Supra is draining coolant from the researve bottle hoes after driving it at 80 for 30 mintues?

Tony,

I think your problem is that you added to much coolent to your car. the reserve shouldnt be doing that if it had to right amount in it. i mean it is only a reserve it can only hold so much. Try draining some and tell me if this helps.

-Brent

Brent,

Now that you have mention it. I do recall the mechanic saying he added more coolent then what was recall but it should level out. I'll take the car back to the mechanic and request he drain it to the correct level.

When do you know when its time to do the head gasket?

Thanks a lot.

Tony




Tony,

I think your problem is that you added to much coolent to your car. the reserve shouldnt be doing that if it had to right amount in it. i mean it is only a reserve it can only hold so much. Try draining some and tell me if this helps.

-Brent

Tony,

No problem....heh this sites for help where gearheads can talk with each other....about the head gasket....you can take the valve cover off and check it out if it looks like its cracked or looks like it could potentially leak soon i would replace it.

Hope this helps too

-Brent

Tony,

No problem....heh this sites for help where gearheads can talk with each other....about the head gasket....you can take the valve cover off and check it out if it looks like its cracked or looks like it could potentially leak soon i would replace it.

Hope this helps too

-Brent

How does this work? I don't know much about the 7mge, but in order to tell if the headgasket needs replacement on a 5sfe you have to start and idle the engine. If there are whitetish or blueish gases spurting out the exhaust, then theres a pretty good chance the headgasket is blown. Another good indicator is when there's coolant in your exhaust pipe. I'm highly doubting you could just take off the valve cover to check the condition of the headgasket; you will most likely be taking off the engine head if you wanted a visual of the headgasket and at this point you will have to replace the HG anyway.

Tony,
....about the head gasket....you can take the valve cover off and check it out if it looks like its cracked or looks like it could potentially leak soon i would replace it.

Hope this helps too

-Brent
WTF?? :sly: There is no way to visually inspect the condition of the HG without pulling the head from the block. White coolant smoke is a dead give away for BHG but it's not always correct 100% of the time, turbo coolant seals have been known to blow and leak coolant into the hot exhaust giving the same smoke. Milkshake in the oil (it will build up on the oil filler cap) and dissapearing coolant are also other signs of BHG. There are many leak testers and BHG test kits you can buy to tell for sure, if your not sure about the condition but it's easy to spot once you know what to look for. Also for future reference for you blue smoke is burning oil.

neither of you know what your talking about. you dont have to wait that long till you totally fuck over your headgasket by seeing blue smoke coming from it...why the fuck would you do that? and no shit you have to take the head off what do you think the valve cover is retards. You two need to learn a little bit more about engines before you come back here telling me about how to check shit

And if your head gasket was as bad as you guys are talking about you blew it. You dont wait that long b/c then your engine will be burning coolant...and at this point your engine is shot and you might have to do major replacing of the heads and maybe even the engine block b/c it could be warped

I was trying to go easy on you since your new, but since your being so disrespectfull to myself and other helpfull members then you need put back in your place. :loser: I got this pic from the TSRM and labled it just for you, the head and valve covers are two totally different peices...
http://216.77.188.54/coDataImages/p/Groups/143/143857/folders/92066/11845811EM32.GIF
After seeing that, who needs to learn alittle more about engines before they start blowing there horn about a subject they really know little about? For the second time, BLUE smoke is burning oil, if you have BHG you will be puffing WHITE coolant smoke, if you have bad rings or bad valve seals you will be puffing BLUE smoke. Nobody is going to ever warp the head from just starting the car, especially starting it for less than a minute to see if it even has a blown head gasket.

Supra_Addict reminds me of my ricer highschool friends. :iceslolan

Also, why change a headgasket when it hasn't blown yet? I mean, unless we're made of money and have special powers that allow us to look into the future, then it really isn't worth changing a HG unless it's a 7mgte running on the original HG. :smokin:

first of all ok fine i stand corrected....dont bitch at me....second of all im not a fucking ricer lover so get that through your head...ight nobodies fuckin perfect even when it comes to cars...so you both nee to lay off and i told you i stand corrected my god

I had the same problem w/ my 86 1/2. The needle fluctuated, but never overheated. I changed the thermostat, temp. control valve, flushed the radiator numerous times, boiled the radiator with no results. Even Toyota mechanics couldn't determine the problem. Eventually, the car overheated at 62,000 miles. I slightly warped the aluminum head. I was so pissed! Mechanics filed down the head & saved it. While I was there, I had them change the timing belt, polish the heads, change the piston rings, check the valves & change the water pump. I've had the car since 1988.

Now, the car has 98,000 miles on it, and it's begining to run hot when the A/C is running on a hot & humid day. When the outside temp. isn't hot, & the A/C is off, the car runs normal. I'd hate the same thing to happen again. It's really a fun car!

i just blew my hg the car was running like a champ and all but the last couple of days when i would stop i would nitice a puddle of antifreeze so i just figured i had a bad watter pump or something then the othernight i started the car and got huge clouds of white smoke out the tail pipe. the antifreeze was comming out of my puke tank because i was gettin cylinder pressure into the coolent system and it was forcing out all the coolent. also check your oil if the oil on the dipstick looks like chocolate milk stop driving the car imediatly!!!!!!!! thats just my 2 cents

well i'll add mine to the list... blew my hg for the 2nd time a few months ago... 1st time.. monkey boys that thought they were mechanics tried to fix it.. couldn't, i bought the car assuming it was a runner, ran for two weeks, i got bored of 5psi lol got a boost controller got to 8psi and "poof goes the head gasket" lol
2nd time... first time i didn't bother taking notice of what size my pistons were, stuck standard bore hg on... i had 20thou over pistons and they come above the block.. big oopsie.. lasted 20,000kms tho hehe

i had the good ol chocolate mikshake goin on too ;) i had massive exhaust gasses in the water first.. then the gasses couldn't lift off my radiator cap so went for the next weakest thing... main waterfeed at the back of the head... felt radiator... cold.. felt top radiator hose... no pressure... lifted radiator cap... damn no water... turn my back.. hear a pfshhh sound and hello i have a geyser comin out my radiator lol
i ran like hell with my water bottle from my car and grabbed water.. as fast as i was pourin the water in it was going straight out of my exhaust and back out the radiator lol

it was quite funny... i had all sorts of ppl tell me to not bother as i can't race again even if i do top it up (i was drag racing that day) but idiots didn't realise i actually wanted to keep my head intact and not warped from here to africa lol

i successfully cooled her down to within normal temps then switched her off... wasn't overly gutted, i was expecting it.. sometime... i had a miss at idle i could never get rid of and really strange temperature spiking... i supposed it was a bhg but let it run its course hehe

this time round i have done everything absolutely supremo... custom mhg, brand new head bolts (was too poor for ARP lol) rings, bearings, and all the usuals for a full rebuild
i will be cranking her tomorrow and we'll see what my workmanships like hehe

sorry for the longish post lol

Cheers

Suze