The Stovebolt Site Forums The Shop Area Engine Shop engine over heat

for some reason my truck is over heating there's plenty of ventilation around the radiator and a fan shroud i flushed out the heater core an i seams to be working fine i also put a new thermostat in whats the prob? any idea's? 77 Chevy with 350

Over heating how? Gauge? boiling over? Steaming? Need more good detailed info. Remember we are far, far away and can't see, hear, smell or touch it. There are many possibilities for over heating but need to narrow down before starting to list them all. Heater core plays no part in overheating, it's on a side circuit. Timing, bad thermostat, wrong thermostat, radiator, leaks, water pump, collapsed hose, BAD GAUGE OR SENDER, worn out rad cap, misfire, valves, clogged engine passages, fan clutch, fan, low oil, pulling heavy loads, slipping belt, broken belt, bugs..... well, I didn't list them all. Don't want ventilation around radiator, want tunnel effect.

its getting to hot after a short drive an boiling over an steaming

What have you done to the truck recently? Any modifications? parts? other than thermostat? Are there any water leaks? Park in a place after driving where you can detect any and all water leaks that hit the floor. A water pump will seep if seal/brg goes out. Make sure pump is turning as fast as it should. Try a new radiator cap if no leaks. Radiator Cap must keep pressure in or it will evaporate/boil all the water out and/or leak. Bottom rad hose should be stiff/reinforced, not weak. "getting hot"...does that mean the gauge says hot or you say hot? Is it a gauge or light? Don't fill rad to very top. Needs room to expand. Truck running good? no misses? no hard start? Where is it steaming from exactly? Is rad pretty full when you start out? then after boiling and then cooled off, is rad water way, way down or a little down? That's all for now.

how about the radiator, did you flush that out? How long have you had this truck? Look back at the posts, there is a long one about overheating engines, that should cover just about every possibility.

Did you install the thermostat correctly? Be surprised how many times the thermostat is put in backwards.

yes the thermostat is correct the only thing i did is is remove that factory air conditioning out ?

have you had this truck for a long time? Did you just get it? has it ran just fine for years? I think your flushing the heater core has flushed a whole lot of crap into the radiator. (you have done more than just remove the air conditioning) We also need more information, about what you did. Did you go back fairly recently and look at the post about engine overheating. Like 6 pages, and then the fella just disappeared. Usually just about the time we finally get one person all set on THEIR overheating problem, 2 days later some one else poses the same question.

i have had it for 1 year got it last june an drove it home over an hour away with no problems at all then i took the rusty body off an put a 57 chevy pickup body on it an hooked the stuff back up an for some reason its over heating ? i think it's a water pump problem so i went down a bought a brand new one from the parts store i'm hoping that will solve the problem if not im gonna over heat an blow a head gasket myself

does it take a while to over heat, or does it do it immediately? You said "a short drive" 1 block, 10 miles, what. Does it do it at highway speeds, or only in town. I think your problem is you don't have all the right ducting and shrouding, (see I told you you did more than just remove the A/C) This is the first time you mentioned it wasn't actually a 77 chevy any more. Is the fan and radiator in the same spot? is all your air going around the radiator and not through it? Go back in the posts about 5 or 6 pages and the post is something like "engine boiling over" it covers just about every possibility. So we don't have to run it through the mill again.