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Overheated after idling for 10 min

  • Thread starter Thread starter Strype
  • Start date Start date Mar 27, 2006

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Mar 27, 2006
#1
  • Mar 27, 2006
  • #1
Okay. If one more thing goes wrong with my 89GT I'm gonna set it on fire... I'm not kidding either

My stang has sat for basically all winter. It's been moved down the street a couple of times, but other than that it's sat still because it has no heat and needs a clutch. So my friend and I start the car yesterday to try and recreate my No Start When Hot problem and to adjust the electric fan cut on temp.

So after about 10 minutes with the fan going the temp shot up to about 250 deg. I left it there for about 30 sec to see if it was just the guage and then shut it off... any ideas? The thermostat is brand new (did it in November). I haven't changed the antifreeze but added a gallon before winter. There is nothing in the overflow but it had a leak I fixed and the car has never overheated before. Any clues???
 

SVT32VDOHC

waiting for the next hack atta
Founding Member
Nov 22, 2001
3,501
28
119
Motor City
Mar 27, 2006
#2
  • Mar 27, 2006
  • #2
I would first check the level of antifreeze, there should always be something in the bottle. However, you did say it has no heat so I believe the next things you should check into is your heater core, it might be plugged up. Another problem with a plugged heater core is foggy windows. Hope this helps.
 

04sleeper

Founding Member
Jun 22, 2002
2,674
14
89
Dallas, TX
Mar 27, 2006
#3
  • Mar 27, 2006
  • #3
Is this on the stock gauge? Or Autometer/Aftermarket?

Is your thermostat stuck closed? (You can leave the cap off and run the car until it opens and see if it flows.)
 

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Mar 27, 2006
#4
  • Mar 27, 2006
  • #4
04sleeper said:
Is this on the stock gauge? Or Autometer/Aftermarket?

Is your thermostat stuck closed? (You can leave the cap off and run the car until it opens and see if it flows.)
Click to expand...

Stock guage.
Heater core is bypassed.
I'll check to see if it flows when I get home... for some reason I didn't even think of that
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Mar 27, 2006
#5
  • Mar 27, 2006
  • #5
Kevin's right on. It would not be the first time that some sitting allowed the stat to stick closed.

Good luck.
 

vristang

15 Year Member
Mar 31, 2005
4,933
101
124
Seattle
Mar 27, 2006
#6
  • Mar 27, 2006
  • #6
Also, if you have done some work on the cooling system recently, you may still have some air in the system. Or maybe some air pockets formed while the car was sitting?

 

Strype

Cuthbert catcher
Founding Member
May 11, 1999
61
34
104
Huntsvegas, AL
Mar 28, 2006
#7
  • Mar 28, 2006
  • #7
LMAO... I went home and put an entire gallon of antifreeze in. I was thinking... where'd it all go

So I start the car and let it warm up. When it got to temp I went to turn the fan on at the relay and antifreeze was everywhere!!! I think me gots a leak

The fan blew the antifreeze everywhere so I can't tell where it's coming from. So I'll do it over again this weekend and see if it is a leak and from where... thanks guys!
 

04sleeper

Founding Member
Jun 22, 2002
2,674
14
89
Dallas, TX
Mar 28, 2006
#8
  • Mar 28, 2006
  • #8
Good Luck.

Let us know what you find.
 

89Notch

Founding Member
Oct 21, 1999
1,669
0
0
MSU
Mar 28, 2006
#9
  • Mar 28, 2006
  • #9
Also, if you take the thermostat out i've heard of people checking it in boiling water just to make sure it opens and closes properly
 

Blk91stang

Member
Jan 3, 2003
607
0
16
North Brunswick, NJ
Mar 28, 2006
#10
  • Mar 28, 2006
  • #10
I'm gonna recommend you read this thread and give it a try. 3 people including myself have had the EXACT same problem and this method cured ALL 3 problems.

http://forums.stangnet.com/showthread.php?t=615047
 
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