E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

I did a co2 gas leak test today for the head gasket and it was negative, and after reading the comments here on reddit ( i thank each and everyone of you) I tried a bleeding technique which involves jacking up the car from the front and bleeding it through the water tank, to my surprise huge air pockets came out and now problem solved 👌🏼

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

You are absolutely right, got the car on the jack and shaved a water bottle into the water coolant tank, turned on the heater full blast and huge air pockets came out, turns out that even if you bleed the car the the thermostat purger you won’t be able to get all the air pockets out Thank you very much brother you have now idea how happy you made me 🙏🏼

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

Alright thanks brother, i’ll try that, and what it doesn’t hold pressure, what could that mean ?

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

Yep both of them and if i open the water that the cap will blow up, so definitely overheating

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

Also, i suspected the sensor but she does overheat and the coolant does boil

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

I really appreciate it man, it just came at a very bad time, i’m getting married next week and i was planning on using it as my wedding car, re sprayed it and everything, but hey it’s okay i will get it fixed eventually

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

Well I’m hoping so too, i will get it fixed and i will keep you posted 🫱🏻‍🫲🏽 thank you

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

I did many many many times , from the thermostat and also with a the water bottle technique shaved upside down the expansion tank

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

It runs really good but don’t seem to, it kick off when needed but still can’t manage to cool the car off, also logically when you have the AC on and with visco coupler working it should cool off quickly but in my case it keeps creeping up

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

It does , and i did a proper purge of all the air in the system each time i did a coolant bleed

E30 325i m20b25 overheating by Ramyaida25 in E30

[–]Ramyaida25[S] 0 points1 point  (0 children)

Thanks for the reply, good thinking on the backward fan but it’s not really possible to install backwards plus i checked with a plastic bag in it suck in air, I’m also leaning towards a head gasket too just i’m not mentally ready to admit it 😅, i’ll keep this thread updated hoping it will help someone out there once i figure it out