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Cold blooded

Discussion in 'Chevy Trucks' started by Sydenstricker Landscaping, Jan 26, 2010.

  1. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    I guess I will back track first. A few months ago I flushed the cooling system out on the truck. Took all of the lines off, made sure they flowed good, etc. Did the best I could at getting all the old junk out which I did. Put new coolant in, went with universal instead of the dex cool. Still used prestone, said it works with dex cool systems. Took both heater core lines off and flushed them making sure the flow was real good, which it was. Didnt do anything with the thermo housing though.

    Now this thing takes for ever and a day to get any kind of warm. I let it warm up before I go anywhere, and still takes a good 45 minutes to get halfway between 160 and 210 on the gauge. The air coming out of the vents is lukewarm at best. With the plow on though, warms up like normal and never gets over normal operating temp. Usually the temp will start to drop when I have a longer drive between jobs. I know these have a good cooling system, but I think this is a lil too good. The thermo is still stock, did not put a cooler one in for the tune. The head gaskets are fine, no water in oil or vice versa. Could any of the other do-dads I put on this thing make it run cooler?? I have the plugs dialed back to about 40 thousandths versus the 60 it calls for. Or did I F something up doing the cooling flush?? Possible thermostat sticking partially open?? Kinda sux driving a big refrigerator around, lol
     
  2. NICHOLS LANDSCA

    NICHOLS LANDSCA PlowSite Veteran
    Messages: 4,310

    Thermostat is stuck open
     
  3. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    That is kinda what I am thinking too. But I have learned from the mighty B&B, ask questions before throwing a bunch of parts at it!!!
     
  4. RacingZR

    RacingZR Senior Member
    from Maine
    Messages: 399

    It's about $20 and 10 minutes of your time. Definitely worth and fits the symptons.
     
  5. mkwl

    mkwl 2000 Club Member
    Messages: 2,361

    Is there any damage that could be caused by it being stuck open? My truck sometimes takes about 15-20 mins to come up to 200* when it's really cold out- I always assumed this was normal? Wouldn't it be good for the truck to run cooler?
     
  6. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    Update: Got the thermo in. The old one was shot at best. The seals were basically non-existant in there. 30 bucks at napa, even came with a new housing. The engine heats up just like it used to. 100 times better and it runs happier. But I still have one issue. There is no heat coming into the cab. The fan works on all settings, it still changes from floor to defrost to dash vents, etc just fine. Got plenty of flow in the coolant department and the heater core lines are flowing freely. Is it possible there is an actuator or door not working right in the vent area not working properly?? Kinda blows chunks since it is snowing outside now too:dizzy: I have a thermometer inside the cab measuring cab air temps and it wasnt getting over 45 degrees in there. Gonna be a cold crappy night of plowing:gunsfiring:
     
  7. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    Got the heat going. Went ape shite and punched the dash numerous times. The voila!!! Nice warm air, lol. I like fixing things my way sometimeswesport
     
  8. Mark13

    Mark13 PlowSite Fanatic
    Messages: 5,737

    :D lol wesport
     
  9. mkwl

    mkwl 2000 Club Member
    Messages: 2,361

    Priceless way to fix things lol lol lol:D
     
  10. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    Since when did you start fixing things the way i do sometimes?!?! LOL
     
  11. NICHOLS LANDSCA

    NICHOLS LANDSCA PlowSite Veteran
    Messages: 4,310

    If it doesn't get warm it will stay in closed loop (like having the choke on) you'll just get worse mileage
     
  12. BigLou80

    BigLou80 Senior Member
    Messages: 558

    Matt,
    my 02 warms up fast, amazingly fast. I wish my wifes car warmed up half as fast. I started my truck on a 5 below day, let it run 30 seconds and left. It was less then 10 minutes before I was up to full operating temp. Even ideling it warms up in under 15 minutes. The aluminum heads give instant heat
     
  13. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    I take it you have prior experience in this?? LOL

    It can get very pricey at time though:D

    Since I started wrenching on cars at 15, lol. And it seems like Chevys like getting smacked around to get them back in line!!
     
  14. drp

    drp Senior Member
    from ontario
    Messages: 170

    did you lose a pen, pencil, lighter down the vents? Bet you jarred something loose when you smacked her.
     
  15. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    No, nothing has been dropped down these vents. Well unless half a cup of french vanilla cappuccino from a few years ago counts, lol Im sure something got shaken loose, I put a nice crack in the dash......ooopps!!!!!!
     
  16. NICHOLS LANDSCA

    NICHOLS LANDSCA PlowSite Veteran
    Messages: 4,310

    Actually with steel heads you would have heat even faster. 02' what? Chev 6.0 and 8.1 have steel heads
     
  17. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    The 99-01 LQ4 6.0 had the cast iron heads. 02 on up LQ4 and LQ9 6.0 had the 317 aluminum heads on them. Cant speak for the 8.1 though
     
  18. BigLou80

    BigLou80 Senior Member
    Messages: 558

    Ummm, its a 6.0 and I am 99% sure it has aluminum heads.

    How do you figure steel heads will get you heat faster ? Alumium is a better conductor of heat, so it will transfer heat to the coolant faster. Aluminum has less mass then steel so it takes less energy then steel to heat them up.

    Steel radiators would be much cheaper then aluminum ones (some are also copper) but steel is a poor heat transfer medium so the make them out of copper or aluminum to extract as much heat as possible from the coolant
     
  19. the new boss 92

    the new boss 92 2000 Club Member
    Messages: 2,989

    lmfao :laughing: sounds like something i do when i gert pissed but only on occation!
     
  20. coldcoffee

    coldcoffee Senior Member
    Messages: 776

    Actually, several years ago a friend of mine spilled a full can of coke on my dash. I cleaned it as best as I could, but for the next three years I had stuff oozing out of my vents that was like molasses, but only when running the truck hard for long hours w/ the heater cranked. When it was cold, you couldn't even move the finger vents until it warmed up.

    Sooo, If it smells like your baking cookies but you know that your not...Hmm, just gives me an idea of what I'm going to do on my manifold, next all nighter.