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7.3 heating up?

Discussion in 'Ford Trucks' started by beanz27, Dec 23, 2013.

  1. beanz27

    beanz27 Senior Member
    Messages: 984

    So I have a 97 7.3 powerstroke, new thermostat, and yes it worked when it was put in, new antifreeze flush with it 2 months old. I have a cover on the grill.

    Granted it's cold as sh*t out, but still should be warmer running. Temp outside is around -20 plus wind chill. When it's warmer out, as in 30's, it runs between N and O on Normal.

    Truck puts out heat, but temp gauge doesn't even get to normal. Warms up to bottom of temp gauge, but no where near "normal." Any ideas on how to make it warm up a bit better? I let it run 15 min before I drive it, and if I let it idle for a bit after I've ran it, cools way down to where it would be if I shut it off.

    Thermostat is a 192 degree unit, I've never had any issues with a 7.3 running this cold before, and I've had 3 before this one.

    Anything I can do, aside from putting a 200-215 thermostat in it? I pull heavy things in the summer, need it to stay cool when it's 90 degrees out.
  2. tjctransport

    tjctransport PlowSite.com Addict
    Messages: 1,390

    put a real temp gauge to it, or an infrared temp gauge to the T-stat housing. the gauge in the dash is a glorified idiot light. it really don't do anything besides move the needle to let you know the sending unit is still working.
    i have seen them sitting on N when the other sensor trips the light on.
  3. beanz27

    beanz27 Senior Member
    Messages: 984

    Thats kinda what I guessed too, I know ford gauges are a joke, especially their oil pressure gauge, basically has 3 positions, off, on, and Holy sh*t this is to high, I'll see if I can get a infrared temp reader on it soon.
  4. maxwellp

    maxwellp PlowSite.com Addict
    Messages: 1,123

    I put cardboard behind the grill. When it is this cold mine will not heat up. I have it cut out for the trans cooler.
  5. clark lawn

    clark lawn PlowSite.com Addict
    from NE ohio
    Messages: 1,233

    Diesels run cold at idle. On the bigger Diesels you can idle them all day and they will not get hot.
  6. Sawboy

    Sawboy PlowSite.com Addict
    Messages: 1,700

    Thumbs Up

    This. Some scanners will even tell you the actual coolant temp as well.
  7. BossPlowMaster

    BossPlowMaster Senior Member
    Messages: 203

    I can let my 6.0 idle for 30 min and it will barely creep up on being warm.... LOTS OF COOLANT to heat up in a diesel.
  8. clark lawn

    clark lawn PlowSite.com Addict
    from NE ohio
    Messages: 1,233

    I had a 570 running for 2 hours this morning at it was only at 120.
  9. beanz27

    beanz27 Senior Member
    Messages: 984

    Oh I know that, I'm not new to diesels by any means. Even working it, well as much as you can work a diesel pushing snow, barely gets it to N on normal. My 99, 95, and 01 warmed up quicker.
  10. dieselss

    dieselss PlowSite Fanatic
    Messages: 11,398

    Might want to think about putting.in a 203 t-stat. If your trk is all up to spec it should handle it no problem
  11. beanz27

    beanz27 Senior Member
    Messages: 984

    Yeah, I think I'll do that, then we'll see if I have to switch it out to a 192 for summer.