Digital coolant temp reading, seems high
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Thread: Digital coolant temp reading, seems high

  1. #1
    Handbrake Released Ian_12's Avatar
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    Digital coolant temp reading, seems high

    So I was screwing around with information center, and came across coolant temp digital reading. It was night, maybe 70 outside, and I was cruising on highway about 60mph. The reading was 219 degrees. I turned a/c on and off with no change in temp. Upon initial decel, temp would start to drop and eventually reach 214, but go back up to 217-219. At idle, it held about 219-220 for about 5 minutes, and I took off. Is this a normal temp everyone else is seeing? To note, I have a manual and prefer to see if people with manuals run at same temp.

    To me, I am use to seeing engine temps hovering below 200 while driving and fans kicking in at 220-222 degrees. I am trying to figure out if...............

    #1: intercooler sucks that much that its affecting coolant temps
    #2: they intentionally made engine run hotter
    #3: digital coolant temp reading is incorrect

    I am not freaking out by this, but just find it odd to running this warm while cruising down the road. So just want to get other input

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  3. #2
    FI Lunatic gman19's Avatar
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    Mine reads the same way....usually around 219-222 cruising any time of day...
    I think that's pretty hot too. I have not gotten into checking when the fans come on yet, but it would be interesting to know..




    2012 Cruze LTZ/RS Crystal Red Tintcoat
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  4. #3
    World Rally Champion 70AARCUDA's Avatar
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    ...the engine computer "controls" the thermostat setting, hotter for better fuel economy, backing off if the engine gets "too hot" during heavy loads (mountains, long climbs, etc.)
    • 2011 Chevrolet Cruze LTZ 1.4LT 6A
    • 2009 Pontiac Vibe 1.8L/SFI 4A
    • 2004 Pontiac Vibe 1.8L/MFI 4A

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  5. #4
    Handbrake Released Ian_12's Avatar
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    Yeah, I had a feeling that maybe it is running hotter for better fuel economy. But to run hotter on a turbo engine with a poor intercooler on 87 octane seems quite foolish. If it truly is running that hot, and is meant to, then I guess the surging I felt under load with the car brand new and 87 octane that came in it, explains problem. Have yet to have surging running 93 and get better gas mileage.

    Don't mind if the car runs that hot, but rather see better intercooler if it is going to.

  6. #5
    World Rally Champion 70AARCUDA's Avatar
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    ...anybody heard of any aftermarket intercoolers being available yet for our Cruzes?
    • 2011 Chevrolet Cruze LTZ 1.4LT 6A
    • 2009 Pontiac Vibe 1.8L/SFI 4A
    • 2004 Pontiac Vibe 1.8L/MFI 4A

    • 1971 Dodge Charger 318 3A
    • 1970ฝ Plymouth AAR 'Cuda 340/6BBL 4M
    • 1968 Dodge Charger 383 3A
    • 1967 Plymouth Barracuda Formula-S 383 4M
    • 1965 Plymouth Barracuda Formula-S 273 4M

  7. #6
    Handbrake Released kkilburn's Avatar
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    Where do you find the digital readout of the coolant temperature? I can't seem to find it.
    Thanks.

  8. #7
    Handbrake Released Ian_12's Avatar
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    Just press menu button and get vehicle info up. Cycle through and it will display coolant temp. It's in with tire pressure and whatever else.

  9. #8
    4th Gear
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    Is the coolant temp readout something you only get with the turbo? I don't see coolant temp when I cycle through all the readings on my 1.8 LS.

  10. #9
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    They also run hot for emissions reasons...

  11. #10
    Retired Moderator shawn672's Avatar
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    Quote Originally Posted by Boost View Post
    They also run hot for emissions reasons...
    Yeah better gas mileage and less emissions per GM
    However my thermostat is set to 180 I believe and it didn't really affect gas mileage at all

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