Thread: GTP over heating

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  1. #1 GTP over heating 
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    My GTP is over heating and I think it's the thermostat. I put a 180 degree fail safe thermostat in it and it locked open and it never got up to operating temperature after that. It got warm enough to read on the gauge but it never got to normal temp, but when it's in, it over heats in a couple miles of driving it. I have a couple of different thermostats that I have tried but it still over heats. Do you have any Ideas?
    Last edited by Bio248; 11-09-2010 at 08:49 AM. Reason: a list? removed it.
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  2. #2 Re: GTP over heating 
    #Billsnamechangessuck MrPoopyButthole's Avatar
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    Do your radiator fans kick on?

    Might be a radiator fan fuse

    Cry havoc and let slip the dogs of war.
    2004 Saab 9-5 Aero - WAHSAABI - Way too much power/Koni FSD & Hirsch Springs/Big Sways - DD/AutoX'r
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  3. #3 Re: GTP over heating 
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    Yeah the fans do kick on so I don't think it's that. Any other ideas?
    Last edited by Brandon Busenitz; 11-09-2010 at 06:23 PM.
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  4. #4 Re: GTP over heating 
    Donating Users Vegas_Matt's Avatar
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    i was long overdue for a coolant flush when i pulled my radiator. how olds the fluid?

    <MiZzBeCcA>its not rape if you yell suprise

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  5. #5 Re: GTP over heating 
    #Billsnamechangessuck MrPoopyButthole's Avatar
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    Definitely consider a coolant flush and changing over to the Green stuff, cause the orange stuff clumps and clogs

    Cry havoc and let slip the dogs of war.
    2004 Saab 9-5 Aero - WAHSAABI - Way too much power/Koni FSD & Hirsch Springs/Big Sways - DD/AutoX'r
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  6. #6 Re: GTP over heating 
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    I just changed it not a month ago and I do have the orange stuff in there(can you mix the orange and the green together?). The thing is when the thermostat is open it cools just fine, it never gets up to regular temperature.
    Last edited by Brandon Busenitz; 11-09-2010 at 06:37 PM.
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  7. #7 Re: GTP over heating 
    GT Level Member torq455's Avatar
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    Scan it to see what the PCM sees for temp. Your gauge may be off.
    2002 GTP: K&N, 3.2 pulley, flipped mounts. ZZP SS headers, 180 stat, NGK TR6's, MSD wires, Reptile ported TB, ported S/C, ported LIM, Intense Stage II heads with larger Manley severe duty SS valves, Yella Terra 1.9 full roller rockers, LS6 springs, Racetronix fuel pump re-wire, Oil pressure "kit", JMB FWI. Mustang dynoed at 240 WHP, 272 WTQ.
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  8. #8 Re: GTP over heating 
    GT Level Member Mitchstrp's Avatar
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    dont mix the green stuff and the orange stuff... its like putting gravy in your radiator lol. It gets really thick and will get nasty. coolant flush if thats what happened.
    1.8 RR's, Speed daddy headers, 180 stat, Open Cone, GBP tune, 3.5 pulley, and ported blower.
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  9. #9 Re: GTP over heating 
    #Billsnamechangessuck MrPoopyButthole's Avatar
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    Quote Originally Posted by torq455 View Post
    Scan it to see what the PCM sees for temp. Your gauge may be off.
    This. It could possibly be your Temp Sensor right under the thermo

    Cry havoc and let slip the dogs of war.
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  10. #10 Re: GTP over heating 
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    I just did a radiator flush and put in a new thermostat(I didn't use a new gasket for the thermostat), and it still over heats. It runs fine without the thermostat and when it's in I know it's getting hot because it steams, but I haven't hooked up a computer yet to see what it says. Any Ideas?
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  11. #11 Re: GTP over heating 
    GrandPrix Junkie PurpleGuy's Avatar
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    Water pump? My car needed one...it would constantly get up to like 230
    2001 Regal GS, PLOG, 3" DP, 1.9's/L76 springs. 21* of timing on a 3.4"
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  12. #12 Re: GTP over heating 
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    centred text necessary?
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  13. #13 Re: GTP over heating 
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    I hooked it up to a computer and it read 122 when the gauge was just above 160 so I think I found the problem. Thanks a lot guys! I still don't know why my thermostat stuck open the first time?
    Last edited by Brandon Busenitz; 11-22-2010 at 10:15 PM.
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