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  • 1996 - 2004 SN95 Mustang -General/Talk-

car overheating at idle and peeing coolant. help please

  • Thread starter Thread starter JymboSlice
  • Start date Start date Nov 8, 2010

JymboSlice

Member
Dec 9, 2008
385
0
17
Nov 8, 2010
#1
  • Nov 8, 2010
  • #1
Hey, i just finished building a motor for my car using MMR's street mod 1000 engine kit and a teksid aluminum block. After putting everything together once, i found out the right TF head had bent all of its valves and cracked all of the rocker arms in half, due to the timing being F'd up. Anyways, got that stuff fixed and put it all back together and started it up on the first crank. idled perfectly and sounded healthy but within 10 minutes of idling the temp is reallllyy hot and then the car starts peeing coolant from the reservoir. we let it cool down for a little bit, i change a few fan settings in the tuner and we start it up again. this time, it still over heats and starts peeing coolant by the tranny (2 spots its dripping). ALSO, whenever i rev the car up to 2.5k, it always revs up then slowly starts revving down.

the car has 42lb injectors with fuel rails, and a focus fuel pump. also TF heads, paxton blower, stage 2 cams, p51 intake, built motor etc. with a tune from MPH loaded on the sct tuner. I added the heads after the tune was written though.

What can be the possible problems for me? any help would be appreciated greatly. thank you, jimmy
 

crazystang25

Member
Jan 25, 2009
492
0
16
Nov 8, 2010
#2
  • Nov 8, 2010
  • #2
Did u bleed the cooling system correctly?
 

JymboSlice

Member
Dec 9, 2008
385
0
17
Nov 8, 2010
#3
  • Nov 8, 2010
  • #3
crazystang25 said:
Did u bleed the cooling system correctly?
Click to expand...



no i did not. how do you do this?
 
0

'03GTinFLA

Member
May 29, 2004
486
0
17
St. Petersburg, FL
Nov 8, 2010
#4
  • Nov 8, 2010
  • #4
http://www.stangnet.com/mustang-for...ooling-system-after-flush-very-important.html
This is what I do. Hope it helps.
 

Flghtmstr1

Member
Mar 31, 2005
572
4
19
Springfield, PA
Nov 10, 2010
#5
  • Nov 10, 2010
  • #5
This happened to me as well after the Tork Tech install. Specifically, the overflow tank cap would pop off when the thermostat opened. I fixed it by burping the cooling system.
 

BurningRubber

10 Year Member
Dec 6, 2004
1,865
24
58
Nov 10, 2010
#6
  • Nov 10, 2010
  • #6
Yep sounds like you're catching an air pocket in your coolant system and not moving much/any coolant and causing a pressure buildup. After I replaced my intake manifold, I tried burping the system and got a bit of the air out, but after driving it a couple of times I had to keep adding coolant and letting the air out of the system. All's good now.

Hopefully that's the extent of your issues.
 

RedDaemon

10 Year Member
Mar 31, 2005
3,470
9
108
Atlanta, GA
Nov 10, 2010
#7
  • Nov 10, 2010
  • #7
shouldnt the stock reservoir cap allow for built up pressure to escape on its own? if i am correct, you should just need to ride it out and watch the coolant level and fill it when it gets low
 
B

bnmc98

New Member
Mar 24, 2009
62
0
0
Bozeman MT
Nov 10, 2010
#8
  • Nov 10, 2010
  • #8
are your low and high speed fans turning on?
 
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