Engine cooling diagram
#1
Engine cooling diagram
Hi. I am trying to figure out why the engine is overheating, and heater core is not supplying any heat.
When cold start, after few miles, I got heat from heater core, but when the temp gauge reaches cca 200, suddenly no heat from heater core. Also the temp raises more. I thought it might be bad thermostat, but I changed it 1 month ago, during head and intake gasket change. I preventively ordered another thermostat and radiator cap, because when the temp gauge reached 3/4, the cap let the water go out to the overfill tank.
I wanted to start from beginning, to be sure, that hoses to the heater core are plugged fine, but I did not found the scheme, or diagram. I am looking for something similar to this, but for Blazer. I am looking for it for two days, but still nothing found. Thank you for help!
Sorry for my bad English, I try to do my best :-)
When cold start, after few miles, I got heat from heater core, but when the temp gauge reaches cca 200, suddenly no heat from heater core. Also the temp raises more. I thought it might be bad thermostat, but I changed it 1 month ago, during head and intake gasket change. I preventively ordered another thermostat and radiator cap, because when the temp gauge reached 3/4, the cap let the water go out to the overfill tank.
I wanted to start from beginning, to be sure, that hoses to the heater core are plugged fine, but I did not found the scheme, or diagram. I am looking for something similar to this, but for Blazer. I am looking for it for two days, but still nothing found. Thank you for help!
Sorry for my bad English, I try to do my best :-)
#4
Try a search with "illustrated parts catalog - cooling system"
maybe here: https://www.gmpartsonline.net
maybe here: https://www.gmpartsonline.net
#5
In addition:
-check routing of the serpentine belt (the owners manual should have the correct routing or a sticker under the hood.)
- check for leaks, also from the heater core (passenger foot-room behind/below carpet - leaking cores will dump the water behind the carpet most of the time).
-check routing of the serpentine belt (the owners manual should have the correct routing or a sticker under the hood.)
- check for leaks, also from the heater core (passenger foot-room behind/below carpet - leaking cores will dump the water behind the carpet most of the time).
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