Help... my car is overheating

Tateslikeink · 10-10-2008, 11:30 PM

Quote:

Originally Posted by suprra_girl

Had a similar problem, when throttling it would overheat but as soon as i backed off/decelerated it would cool down again, I was leaking between combustion chambers. Have you done a compression check?

Yea, the numbers were all over the place. From the 6th cylinder to the 1st everything was weird. 1st was 120 2nd.. i can't remember.. 3rd.. i can't remember, 3rd 145, 4th 155 6th 160. How would one go about fixing this issue if it was a leak between combustion chambers?? Because thats kind of how it is... Except, if i turn the car off, then start it again, its at normal temp.

suprra_girl · 10-10-2008, 11:33 PM

If it's that ALL OVER the place then yes head gasket has fubar'd.

It's not overly common to blow between cylinders, usually you get the water mixing with oil variety.

What work has been done on it? Is it stock or got mhg or what?

Tateslikeink · 10-10-2008, 11:41 PM

Its completely stock. Nothing at all done to it. Its weird because the car runs like a top. Just randomly overheats. Definitely not a all the time deal. Once in a while. And it stopped spewing when i changed the thermostat housing bolts from the leak i acquired from the bolt i broke

suprra_girl · 10-10-2008, 11:48 PM

To verify, I would get the engine warm and do another compression check. Let us know the numbers (so write them down hehe) and we'll go from there. We don't want you pulling off a head unecessarily

Tateslikeink · 10-11-2008, 12:12 AM

Quote:

Originally Posted by suprra_girl

To verify, I would get the engine warm and do another compression check. Let us know the numbers (so write them down hehe) and we'll go from there. We don't want you pulling off a head unecessarily

Yea.. good god that wouldn't be cool. And yes, of course the engine was cold. Its very difficult to work on top of that engine when its hot... Heat burns.. But i'll give it a shot.

ghost88 · 12-02-2008, 05:44 PM

i have an 88 stock supra 5-spd (non-turbo) and recently found out that the gaskets/torque settings have to be changed from factory standard. Several years ago the car starts randomly overheating. At first it was slightly hotter than normal, nothing suspicious in the oil or exhaust (that i remember) then one day it starts to boil into the red, the gasket went and i sent out a smoke screen for half a mile. I bought steel reinforced gaskets and i believe the new torque settings are 72lbs (Original was 59lbs i think). Im back on the road and watching things closely.

supra is a great car but i wish i found out earlier what problems it had so i could anticipate them before they happened. im learning on the go.

87MK111Supra · 02-25-2009, 01:50 AM

Well I've got some overheating on my 87 NA supra. The engine seems to run fine but then a lot of steam starts coming out of the exhaust and the needle starts to go to the red. Thermostat has been replaced and all hoses have been checked. What else should I look for before taking the head off?

Tateslikeink · 10-11-2008, 12:10 AM

ALSO!! I found an exhaust leak.. coming from one of the gaskets between the exhaust manifold and the downpipe.. Could that cause this problem?? The mechanic who did my compression test said it was fine.. I just remember the numbers being weird. It was only cranked for 2 seconds on each cylinder. I didn't think that would give u an accurate reading. And the block test came out clean. All i know is that this problem is very annoying and i can't wait to either fix this issue of get rid of the car.

10-10-2008, 11:33 PM	#2
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	If it's that ALL OVER the place then yes head gasket has fubar'd. It's not overly common to blow between cylinders, usually you get the water mixing with oil variety. What work has been done on it? Is it stock or got mhg or what? __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

10-10-2008, 11:48 PM	#4
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	To verify, I would get the engine warm and do another compression check. Let us know the numbers (so write them down hehe) and we'll go from there. We don't want you pulling off a head unecessarily __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

12-02-2008, 05:44 PM	#6
ghost88 Stock Join Date: Dec 2008 Location: USA Posts: 14	I wish i had this thread a while ago!! i have an 88 stock supra 5-spd (non-turbo) and recently found out that the gaskets/torque settings have to be changed from factory standard. Several years ago the car starts randomly overheating. At first it was slightly hotter than normal, nothing suspicious in the oil or exhaust (that i remember) then one day it starts to boil into the red, the gasket went and i sent out a smoke screen for half a mile. I bought steel reinforced gaskets and i believe the new torque settings are 72lbs (Original was 59lbs i think). Im back on the road and watching things closely. supra is a great car but i wish i found out earlier what problems it had so i could anticipate them before they happened. im learning on the go.

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10-10-2008, 11:41 PM	#3
Tateslikeink Stock Join Date: Sep 2008 Location: Northern, NY Posts: 18	Its completely stock. Nothing at all done to it. Its weird because the car runs like a top. Just randomly overheats. Definitely not a all the time deal. Once in a while. And it stopped spewing when i changed the thermostat housing bolts from the leak i acquired from the bolt i broke

02-25-2009, 01:50 AM	#7
87MK111Supra 3" Exhaust Join Date: Jan 2009 Location: San Diego Posts: 50	Well I've got some overheating on my 87 NA supra. The engine seems to run fine but then a lot of steam starts coming out of the exhaust and the needle starts to go to the red. Thermostat has been replaced and all hoses have been checked. What else should I look for before taking the head off?

10-11-2008, 12:10 AM	#8
Tateslikeink Stock Join Date: Sep 2008 Location: Northern, NY Posts: 18	ALSO!! I found an exhaust leak.. coming from one of the gaskets between the exhaust manifold and the downpipe.. Could that cause this problem?? The mechanic who did my compression test said it was fine.. I just remember the numbers being weird. It was only cranked for 2 seconds on each cylinder. I didn't think that would give u an accurate reading. And the block test came out clean. All i know is that this problem is very annoying and i can't wait to either fix this issue of get rid of the car.