Overheatingish

Fri Dec 30, 2011 7:20 pm

Hi guys I have a little problem with the m52 it's kind of overheating but only on longer journeys say 25miles or longer if I have the blowers on its fine.
If I go on a journey the water pipes are rock hard and when u park up u can almost hear it bubbling it never reaches 3/4 but she off the road for the winter and would like to try and sort it.
I have replaced thermostat water pump and everything else that goes, has anyone herd of this I heard a rumour that it could b a clogged radiator?????
Oh there is no obvious oil in water or visversa any help would b great thanks dan

Fri Dec 30, 2011 7:35 pm

What thermostat and fan sensor (If running an electric fan) are you running? Although if your temp gauge is still staying away from the red area I don't think there's a problem there.

Mine used to go about 3/4s until I bled the system and topped up with coolant.

Fri Dec 30, 2011 7:37 pm

Blocked rad 99.9%

Fri Dec 30, 2011 7:41 pm

Im currently running a switch for the electric fan as my rad doesn't have the switch sensor hench the questions about the rad would change. TBH I'm not sure what thermostat it is I just ordered a new one and put it in

I try bleeding all the time but without any luck really still stays the same. It doesn't get many miles to b fair only about 4k in 3 years but it's about time it did so wanted to try get sorted thanks dan

Fri Dec 30, 2011 7:50 pm

Can I unclog rad or am I looking a new one. Is there any special antifreeze to b used? It hasn't always been the case with the car.
How much am I looking for a rad with the temp switch. Any for sale????

Fri Dec 30, 2011 7:56 pm

E36 aircon spec rad are the best/easiest to fit, good second hand one £40 odd
New they are about £130 for a nissens from ECP

Fri Dec 30, 2011 8:06 pm

Ok cool any other models or just a 328i. I will put it on my list

Fri Dec 30, 2011 9:57 pm

Yeah they do fit them to other models, I think its pretty much anything late-ish with aircon

Sat Dec 31, 2011 9:18 pm

Ok nice one don't suppose u know a part number for the ac rad???

Sun Jan 08, 2012 7:46 pm

blocked rad,had same problem on mine,rad looked fine,cut it up after and was well blocked.

Sat Jan 28, 2012 8:02 pm

Little up date ive bought a new rad from BMW so that's in check just wondering if there is any specific coolant they say to use. I don't want another blocked rad.....

Sun Jul 29, 2012 7:58 pm

Sorry to open a old one but still have the same problems as top really still a nightmare to bleed and the pipes go rock hard, i have replaced the rad with a new one, a new problem seems to b that after a run the pipes are rock hard and after say a week of not driving her the pipes r still hard wen I go back to it. Also that budding sound for 1-2seconds after she stops.
Any ideas help? Thanks guys

Sun Jul 29, 2012 8:58 pm

Where can I get a 80 deg thermostat from can find 88 but nothing else

Sun Jul 29, 2012 9:36 pm

80 degree stat can be found in e36 320i m50... thats what ive asked for in my local factors (9 quid)