• Tags

overheating

  1. M

    cooling fan not turning on, but does when ac is on or when coolant temp is jumped or unplugged.

    Hello, I have been having an issue with my cooling fan not comming on, I have checked all the fuses, changed the CCRM, and changed both temperature sensors. Like i mentioned in the title the fan does come on when the ac is on, and when the coolant temperature sensor was unplugged and when we...
    • Mycarhatesme
    • Thread
    • Mar 14, 2026
    • cooling fan help me overheating please help
    • Replies: 2
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
  2. H

    Brand New Built 302 overheating

    Hey everyone, I’ve got a brand new built 302 but having trouble getting the engine cooling properly. Getting close to 260° if ran long enough Right now I have a 2 row radiator with 15” mechanical fan and shroud. However I don’t think this is enough. Can’t go any larger with the fan due to how...
    • hassler
    • Thread
    • Sep 26, 2025
    • foxbody overheating overheating
    • Replies: 23
    • Forum: 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  3. D

    03 mustang Mach 1, 4.6L None Supercharge

    Hey all, so iv been battleing with my beast for a good few months on this issue. Its gets hot after driving for about an Hour. About 3 months ago i did head gaskets thinking that was the problem, and its been off and on with it getting hot. I drive nice and easy, minding my loud pedal and its...
    • DangStitches
    • Thread
    • May 18, 2025
    • 2003 mustang mach 1 4.6 overheating
    • Replies: 2
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
  4. B

    2001 SVT Cobra Overheating Issue

    Hello, I recently bought an 01 cobra from a buddy for pretty cheap. Its been sitting for approx 2 years, so I replaced all the fluids and finally started her up. After running for a little bit it began overheating. I reburped and flushed the coolant and still had the same issue, with no change...
    • bradencaron0
    • Thread
    • May 8, 2025
    • cobra overheating
    • Replies: 1
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
  5. Overheating

    my 1993 Mustang these last days after 10-15 minutes the temperature begin to rise, normally stay below half The fan clutch was changed when buy it because was overheating And the I think the thermostat is opening I took this picture inside the rad that’s don’t look normal
    • Jonatan Issa
    • Thread
    • Aug 30, 2023
    • 1993 foxbody 5.0 overheating
    • Replies: 20
    • Forum: 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  6. P

    Help with overheating 4.6 4v!!

    I recently purchased a 96 mustang cobra and the car was overheating so I flushed and replaced the coolant, but no help. Every time I drive the car for about 20 mins the engine bay smokes and theres hot coolant leaking from the reservoir. After some research, I am going to replace the thermostat...
    • petemakmt
    • Thread
    • Sep 26, 2020
    • 4.6 4.6 4v cobra coolant overheat overheating thermostat waterpump
    • Replies: 2
    • Forum: SN95 4.6L Mustang Tech
  7. I

    Engine keeps over heating

    I have a 2012 GT. The reason why I'm posting in here is because I swapped the 1st gen for a 2nd gen Aluminator with a ProCharger. I can't keep the engine at a safe temperature without the heater on full blast. She's full on coolant and I replaced the fan resistor. With the heater off she hits...
    • Itz_a Stang_Thang
    • Thread
    • Aug 31, 2020
    • coyote overheating procharger
    • Replies: 7
    • Forum: 2015 - 2023 (S550) Mustang -General/Talk
  8. Z

    PO128 Thermostat code help

    Hello, I'm new to the StangNet forum, but I've been doing DoorDash for a two months or so, and my mustang started overheating. I first suspected the thermostat, so I changed that and added new coolant. But whenever I was at a stop or basically not driving down the highway the engine would slowly...
    • zrlopez
    • Thread
    • Aug 12, 2020
    • engine coolant temperature sensor overheating thermostat underheating
    • Replies: 2
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
  9. 8

    Coolant leak

    So I recently got an 87 gt and I just installed an a/c delete kit on it that I purchased from LMR and I drove the car after installation to see how it ran and got home and there was a huge coolant leak and it was overheating. Wondering if anybody has any suggestions to what it might be, looks...
    • 87FoxDroptop
    • Thread
    • Jun 21, 2020
    • acdelete coolant leak foxbody lmr mustang overheating waterpump
    • Replies: 4
    • Forum: Fox 5.0 Mustang Tech
  10. A

    Overheating issue

    ok so here’s my problem I have an 07 GT, the other day I was idling with the AC on and I overheated. I replaced the thermostat and the water pump just to be in the safe side. pressure test was fine I’m not leaking any coolant. There was a 30 degree difference between the top radiator hose...
    • AllenC
    • Thread
    • May 4, 2020
    • cooling systen mustang overheating
    • Replies: 6
    • Forum: 2005 - 2009 Specific Tech
  11. J

    Engine Fan

    Got a 97 GT that we have been restoring for a few years. Finally got it painted and out driving it but not it runs very hot. Started with the basics, new thermostat, Flush the radiator. It the process of doing that we discovered that the fan is not coming on when it warms up. It will come on...
    • j70Stang
    • Thread
    • Sep 17, 2019
    • 4.6gt engine fan overheating sn95
    • Replies: 5
    • Forum: SN95 4.6L Mustang Tech
  12. T

    Engine 1990 5.0- Overheating and Smoke after Head Swap (Need advice ASAP)

    I'm getting desperate at this point. So, I had bad compression in two of my cylinders and my car drank coolant before I started this job nearly two months ago, so figured I would check the head gaskets. I have never had this engine open since I got the car. At the same time, I pulled some GT40p...
    • Tango_Yankee
    • Thread
    • Jan 25, 2019
    • cylinder heads head gasket overheating
    • Replies: 3
    • Forum: Fox 5.0 Mustang Tech
  13. B

    86' 4 eye 306 carb. Built. Overheating

    Ok, I bought me a 86 mustang with a 306 carb engine. Holley 4 bbl, edelbrock performer air gap intake, gt40 heads with comp cam alumi saver roller rockers 1.6, edelbrock long tube 4 to 1 headers into single chamber flows. That being said I purchased the car with an overheating problem. The...
    • Bigred86foureye
    • Thread
    • Oct 29, 2018
    • 306 4eye all new cooling carb 306 fox body gt40 heads new heads overheating
    • Replies: 40
    • Forum: Fox 5.0 Mustang Tech
  14. New radiator, still overheating

    Hello, I have a 1991 LX with a rebuilt 347 stroker, and it keeps overheating. I run straight water with royal purple, (water wetter) but when I am sitting and idling, even even park the temperature keeps increasing. I run the hp efi system so I know the temperature is accurate, but it will stay...
    • paddyrk
    • Thread
    • Sep 3, 2018
    • coolant overheat overheating radiator
    • Replies: 22
    • Forum: Fox 5.0 Mustang Tech
  15. T

    Engine Overheating 95 gt HELP

    So first off i have a 95 mustang gt has I've been fighting an over heating issue for a while now. I'm lost now things I have replace Waterpump Tstat Hoses Coolant temp sensor New dual core aluminum radiator New electric fans I've flushed the coolant out number of times just got done...
    • Tripleblacksn95
    • Thread
    • Aug 14, 2018
    • 5.0 overheating sn95
    • Replies: 7
    • Forum: 1994 - 1995 Specific Tech
  16. Overheating... ?

    Okay friends, I recently changed out my radiator and thermostat about a month ago. My radiator had a leak on the bottom that couldn't be fixed so I just got another one. Then my thermostat started sticking, so I replaced that as well. When I changed out my radiator, I did a full flush to make...
    • miss_molly_mustang
    • Thread
    • Jun 11, 2017
    • 1999 overheating v6 3.8l
    • Replies: 8
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
  17. Y

    Coolant Came Out Of Overflow Cap; Car Wont Start

    Hey all, i am new to the forum so first and foremost i would like to apologize if this post already exists somewhere, or if i have already broken some rule i don't know about here. I know how forum members can sometimes be very particular about the rules of their specific forum being upheld...
    • YeahIDriveaV6
    • Thread
    • May 31, 2017
    • car wont start coolant leak coolant overflow dead head gasket help please im stupid overheating radiator overflow leak
    • Replies: 1
    • Forum: 2005 - 2014 Specific V6 Tech
  18. M

    1996 Cobra Overheating Issue!!!

    So I know this is a known issue across cobra's in general. I have replaced radiator (OEM), Fan (OEM), waterpump (OEM) and CTS (Coolant Temp Sensor) Fan comes on but does not seem to do a whole lot. I have already had my system flushed and I do not believe there are any air pockets in my system...
    • Marz89
    • Thread
    • Mar 13, 2017
    • cobra overheating
    • Replies: 6
    • Forum: 1996 - 2004 SN95 Mustang -General/Talk-
  19. K

    Engine 07 Mustang Gt Overheating

    Newbie here guys. I have an '07 Mustang GT that is overheating. On cool or rainy days and in the mornings, it does fine. Later on in the day, after it gets hot out, it will overheat. It does fine when I first crank it, when the engine is cool, and the fan runs. However, once the engine reaches a...
    • Kempz
    • Thread
    • Sep 26, 2016
    • 07mustang mustang mustanggt overheating
    • Replies: 0
    • Forum: 2005 - 2009 Specific Tech
  20. B

    Iac / Overheating Woes - Progress And Questions

    Hello all! Progress is being made, albeit more slowly than I would like. A little backstory, though... I traded an older truck that I had for my first Mustang - a 1998 GT with all the bolt-ons and some other miscellaneous work. The car runs and sounds fantastic. I drove the car for about 2...
    • boomkat
    • Thread
    • Sep 11, 2016
    • 98 mustang coolant system iac overheating thermostat
    • Replies: 2
    • Forum: SN95 4.6L Mustang Tech
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