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Runnin a bit warm

Discussion in 'The Garage' started by mudbog42, Dec 3, 2006.

  1. mudbog42

    mudbog42 1/2 ton status

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    Well I just recently installed an edelbrock performer intake manifold and carb spacer:D and the problem is since the install, my truck runs a bit warmer at highway speeds now:( , not to the point where it overheats, but to the point where it is irritating.:mad:

    What could be causing it to be running warm like that, city driving and low speeds, the temp is fine but as soon as I get on the highway the temperature rises a good bit and it didn't do it before:dunno:

    Not sure if this could be a possibility or if it matters any but when I refilled the radiator I used nothing but the 50/50 mix which I'm pretty sure should be fine but???:dunno: :dunno:
     
  2. DirtyJim

    DirtyJim 1/2 ton status

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    try going to a 60 / 40
     
  3. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    what temperature does it run on the highway?
     
  4. JEBSR

    JEBSR 1/2 ton status

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    Did you possibly put a hotter or more restrictive thermastat in it?
     
  5. PsRumors

    PsRumors 1/2 ton status

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    If it does fine at slow speeds chances are it is not your coolant. Check for vacuum leaks. If you are running overly lean at cruise it can heat up the engine.
     
  6. mudbog42

    mudbog42 1/2 ton status

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    It runs sometimes at exactly 210 or a a bit over that line. Used to run halfway in between the 210 mark and the mark before

    Used the same thermostat from the old manifold

    Will check again for vacuum leaks
     
  7. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

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    Running lean. Better flowing manifold.
     
  8. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    is 210 really too high? seems like that would help fuel economy. then again, i run a diesel and 210 is real good for me. :)
     
  9. mudbog42

    mudbog42 1/2 ton status

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    Well checked the vacuum lines again and all good, and hooked the scanner up and its not reading lean, but before I started the motor I noticed coolant on the manifold and it seems to be coming from the thermostat housing, so I'm thinking I may have found my culprit, though it seems to stop leaking when the motor warms up

    So I guess I'll redo the gasket and see what happens
     
  10. destinbeachman

    destinbeachman 1/2 ton status

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    Have you tried tapping on it with a ball-peen hammer yet?:D
     
  11. mr.smartass

    mr.smartass 1 ton status Premium Member

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    Do yourself a favor and go ahead and replace the thermostat... it's like a $4 part with gasket and will totally eliminate it as a problem.
     
  12. roadnotca

    roadnotca 3/4 ton status

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    Were manifold and spacer the only things you changed?
    Otherwise and in general, RedLine water wetter is great stuff.:D
     
  13. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

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    Also the Specter housings are crap. Period. Get a stock one. The Specter housings have a really friendly sealing surface. Wavy.
     
  14. mudbog42

    mudbog42 1/2 ton status

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    Yeah manifold and spacer were the only things changed and I have one of the stock cast iron housings
     

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