535i overheating issue... need help PLEASE!!!!!!

[beanerguitarist]

ok so today i went and replaced my water pump and thermostat because i was overheating and leaking coolant. so after i get the job done i am still over heating. ive properly bled the system yet when i am sitting at idle it will slowly rise all the way to the red. i flushed the radiator, i checked all the hoses, i checked my new thermostat as well (ran engine with thermo out to see if i was still overheating) and i dont have clouds of smoke pouring out from my exhaust. im really annoyed at this point. i spent 12 hours outside today and nothing. i thought it could be radiator cap letting air in so i ran with it off but it would start to slightly bubble so its getting air from somewhere i think? not from heating at this point it was still ok. but yea any help would be awesome. im renting a compression tester on my next day off so well see if that will answer my headgasket or intake gasket thoughts.

[kronus]

mye28.com will be of more help, but if you're overheating and your mechanical fan works, you haven't bled it properly and have an air bubble somewhere. M30s are a bitch to bleed right.

[beanerguitarist]

mye28.com will be of more help, but if you're overheating and your mechanical fan works, you haven't bled it properly and have an air bubble somewhere. M30s are a bitch to bleed right.

yea i just found a super proper way to do... whoops. i am heading outside now. i have about 20 more minutes of light left. and yea my mechanical fan works fine. its an auto as well so i dont know if theres a huge difference

[kronus]

there isn't, good luck.

[beanerguitarist]

still overheating... i went to a forum and found out how to do it correctly and its still overheating.

[LowR3V'in]

Hello.
I've never had problems myself but what I do is just fill the radiator first
then fill the system through the reservoir
run the car with the cap off until it starts to come out
Let it cool down and pour in some more coolant.
Just keep running it through cycles and pouring it in.
Usually everything bleeds out just fine that way. Hope that helps and good luck.

[kronus]

is your fan clutch toast? could look like the fan is still spinning, but it wouldn't be pushing nearly the same amount of air as a working one.

[beanerguitarist]

yea it was a fan clutch. i have one coming in on monday

[VinniE30]

The problem is probably not solely the fan clutch. Most people on here with m30 e30's aren't using the mechanical fan at all and don't have overheating problems.

[kronus]

The problem is probably not solely the fan clutch. Most people on here with m30 e30's aren't using the mechanical fan at all and don't have overheating problems.

he's got a 535i ;)

(to clarify, the people with e30m30s have electrical fans that are on. If you dont have a mech fan and don't turn on your e-fan while the car is sitting, you'll overheat fairly quickly)

[VinniE30]

he's got a 535i ;)

(to clarify, the people with e30m30s have electrical fans that are on. If you dont have a mech fan and don't turn on your e-fan while the car is sitting, you'll overheat fairly quickly)

Well thats my point... If it doesn't overheat in an e30 without a mechanical fan, it shouldn't overheat in a 535i without a mechanical fan.

My m30e30 has the electrical fan wired so that it will kick on low speed at 80c or if AC is on and high speed at 88c via the coolant temp sensor. I know it's also common for people to just wire it to a switch so you can manually turn it on/off.

Not sure when the electric fan turns on in a 535i but you make it sounds like it doesn't unless you turn it on? Not sure what you mean by that.

[kronus]

it doesn't overheat in an e30 with the e-fan on, was my point. Whether his 535's e-fan is functional or not is another question, but one that probably has some bearing on his situation.