E39 525i Slight Overheating. Possible Air Bubble or Thermostat?

[moranor@axis]

good stuff :rollsmile:

 

[jeff_denning]

Thanks guys!!

Really glad to have her back to normal running condition - don't think I'll get tired of driving the 5er :rollsmile:

@Legacy: Hopefully no other threads will come up, but I'm taking damn good care of her. If something does though, you'll be the first to know

 

[jeff_denning]

*sigh*
So the issue is back again. Noticed the heat guage creep up to around 2 'o clock again the other day.

Seems like my radiator has a slight leak too.... not even sure if the car is over heating because the needle fluctuates far too much. Goes up to 3 'o clock and then suddenly drops back down to band on 12 'o clock, dead centre

Getting a full computer and mechanical diagnostic done on Wednesday morning, but in the mean time - any ideas? Possibly a faulty thermostat.... just not sure where all the coolant in the radiator is going.

 

[jeff_denning]

Took my car through to SMG on Wednesday for a diagnostic, and ended up sorting out the over-heating issue once and for all. Replaced:

• Water pump

• Thermostat + housing

• Tappet cover

• Cooling system bleed and re-fill

Now to fix the dent in the side skirt :argh:

 

[Legacy]

I really hope its all sorted out now!:=):

 

[sclass]

You should redo your radiator hoses, expansion tank, and viscous fan as well. It's expensive but so is a new cylinder head :fencelook: