Thread: 2005 Grand Prix low temp (I believe)

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  1. #1 2005 Grand Prix low temp (I believe) 
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    Hey everyone, I have an 05 Grand Prix GT that I believe is running low temp. Both summer and winter, the gauge only read around one tick above the first hash mark. Summer doesn't bother me much, but as we get into winter, it seems to not allow for much warm air coming from vents.

    I have had the coolant flushed, along with radiator and heater core, and refill. I reverse flushed core... water seemed to flow through good, but I used the garden hose and wasn't too crazy with pressure. Change thermostat as well.

    I did see there are different temp thermos for my car... maybe I grabbed one that opens too soon?

    Image attached show where my temp 99% of time sits. In the winter, the temp really doesn't climb unless it idled for 45 minutes. Summer, temp will climb when sitting at a light or something, but outside temp has to be pretty warm.

    Is there a heater core flush fluid I could use? I hear that those can damage stuff, so want to be safe.

    Any info what to look at would be awesome.

    Thank, Dan

    (Side note, tried to upload photo and it won't let me)
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  2. #2 Re: 2005 Grand Prix low temp (I believe) 
    Killa Bee Scottydoggs's Avatar
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    buy a 195 t stat.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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