Help! 3.8 Problems

Discussion in '1994 - 1995 Specific Tech' started by Fatkid81377, Dec 12, 2013.


  1. Fatkid81377

    Fatkid81377 New Member

    Joined:
    Dec 12, 2013
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    2
    So I got a 95 3.8 mustang in pieces and put it all back together and got it running and driving. Then the prob started. Sitting in the driveway at idle everything is fine great heat but once I drive it the temp goes up and it blows cold air once it gets to L in normal it drops back down and I get heat for a min then it starts blowing cold again working back up to the L in normal. Wtf ! Please help
    #1
  2. Mustang5L5

    Mustang5L5 Car used in adult film "Highway Gangbang-InDaButt" SN Certified Technician Founding Member

    Joined:
    Feb 19, 2001
    Messages:
    21,623
    Likes Received:
    306
    Trophy Points:
    124
    Location:
    Massachusetts
    Did you recently drain your engine coolant? Sounds like you are low
    #2
  3. Fatkid81377

    Fatkid81377 New Member

    Joined:
    Dec 12, 2013
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    2
    Yes I did when I change the radiator. That's what I thought at first but rad and overflow are both full
    #3
  4. elarm1

    elarm1 Active Member

    Joined:
    Dec 17, 2010
    Messages:
    757
    Likes Received:
    183
    Trophy Points:
    54
    Location:
    N.Va
    You have to "burp" the system
    #4
  5. Fatkid81377

    Fatkid81377 New Member

    Joined:
    Dec 12, 2013
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    2
    I've been researching and just found out there is a coolant filling procedure so I'm gonna try that and hope it works. I will let everyone know the outcome thanks for the help
    #5
  6. Chythar

    Chythar Well-Known Member

    Joined:
    Aug 26, 2004
    Messages:
    2,047
    Likes Received:
    8
    Trophy Points:
    58
    Location:
    West Los Angeles, CA
    The V6's have a convenient bolt in the top of the coolant system. Slowly loosen the bolt while the car is running, and tighten it down when you get coolant leaking around the bolt threads. Your coolant system has now been purged of air. Check the radiator and make sure it is full as well.

    If you have a stock thermostat, the temp gauge should go up to about the "o" in NORMAL, then drop down a bit. If you let the car idle, the temp will eventually go over halfway; the fan should kick on and bring the temp down a little under halfway. If everything in the system is working fine the temp should never get very far past "M", if I recall.

    The Mustang coolant system is a pressurized system; if it can't maintain 16psi the temps will rise faster and higher than normal. If you're still having trouble you may want to rent a coolant pressure tester and check out your system. Most times, the hose clamps aren't quite tight enough.
    #6

Share This Page