r/BMWe24

Hi everyone, I have bought this BMW e24 635CSI with a manual transmission. Its the type 1 with the M90 engine. (EU)

When I bought it, I had to drive it back 550km's to my home and I have experienced zero issues. The car drives and shifts very well.

Recently, the car started overheating at idle or slow speed. In order to fix that, I have changed the waterpump and the fan that is connected to the engine. Unfortunately, that did not help.

I have noticed the return hose of the radiator was cold while the intake of the radiator is extremely hot, so I thought my radiator is blocked and isnt providing enough flow. I have changed the radiator with a new one as well and sure as hell it still overheats.

Now I kinda dont know what to do or check anymore, the overheating is not related to the extreme temperatures as it is overheating in cold weather as well. I have tested the thermostat and and it is working well.

Honestly, I dont know what else it can be. Does anyone have experience with this? It doesnt leak or mix the coolant liquid and there is no pressure in the hoses.

I found this 635csi on marketplace with an asking price of 6k its an auto. Seems pretty clean besides the sun damage and its just barely over 100k miles.
I really want one of these. I know it’ll take some love and eventually would like to convert it to manual.
Lmk your thoughts. Im kinda gas lighting myself into believing this would be a good investment knowing the value of these cars when they are in good condition which I intend to do with this one.

I didn't see a single other E24 this year. Frankly there weren't many old BMWs at all which is a shame.

Going to continue gently restoring it. Have A/C and OEM radio parts already ordered. Any recommendations for seat upholstery kits and complete exhaust kits (Supersprint?) would be much appreciated!