Need 7M Guru's! Having 7M Heating Issues

[jdm2191]

Well after block test, i've simply cleaned out the overflow because it looked like shit in there, added 50/50 to the radiator/overflow burped it once again (NO MAJOR FLUSH) & have been good since...Working Heater, no overheating, or hiccups.

So I guess I might be save to say problem fixed?

I'll update if shit goes downhill again

 

[Nick M]

Would also check radiator cap for any wear, as that won't be revealed by pressure test..

Unless you pressure test the cap that comes with pressure test kit...

 

[Rollus]

Hum, I don't understand that Nick. Do you mind elaborate please?
(the pressure test I used on another car took the place of the stock radiator cap)

 

[jake8790]

The lower radiator hose is cooler than the top because the radiator is working properly. I would replace the thermostat, radiator cap, and all the coolant hoses. If any hose has a small leak the cooling system won't pull coolant back from the overflow and you'll end up with a heater core full of air.

 

[jetjock]

^ Wow, someone who actually gets it.

Rollus: The rad cap can be tested alone using an adapter that comes in the better pressure test kits.

 

[Insidious Surmiser]

lol, common sense. I figured it wasn't worth mentioning... since it's blatantly obvious if you take 2 seconds to think about it.

 

[jetjock]

For some it's intuitively obvious...