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2004 Ford Explorer Question: I've can not figure out why the thermostate housing keep cracking?

 

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pknxman, 4.0L V6, South Holland, IL, January 07, 2013, 05:54
 Rookie

I have a 2004 Ford Explorer that constaintly leaks around the thermostate area. First it was the O-ring, and then I found that it was the thermostate housing. I have changed it twice now.

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  • Answer #1

    Greg's Orange Auto (13627 Answers) , Orange, CA - (714) 361-9386
    globalhelper January 07, 2013, 06:28
     Master

    they are plastic and both surfaces need to be very clean as not to bind while tightening. where did you buy yours? aftermarket tend to be thinner plastic

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    pknxman, January 07, 2013, 08:08
     Rookie

    Thanks for your response. I the first thermostate housing I ordered online and the second one I purchased from O'Riellies auto parts. I made the mistake of over tightening the first time but didn't damage it. It last about six months and the come to think of it the second one last about six month, give or take a couple weeks.

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    globalhelper, January 07, 2013, 09:26
     Master

    your buying cheap parts

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    ziptie12 January 07, 2013, 19:52
     Master

    DO NOT overtighten!! O-ring type seals do not need to be very tight , overtightening will stress the housing and warp it causing it to fail prematurely even with a good (OEM) part.

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