Z3 1.9 1997 m/y, very cool....too cool actually!!

[peterzoom]

We have bought a Z3 1.9 and although it absolutely on the button in every other aspect it fails to reach normal operating temp and the heater emits a barely warm stream of air no matter how long it has been running.
My feeling is that the thermostat is u/s and was wondering...
1.If this is likely to be the case.
2.How trick a job it would be to replace the thermostat.

Thanks in anticipation.

[StuB]

Regular failure of thermostat and not too difficult to replace to fix. Temp should go to and stay at middle of guage.

[road_rager]

Sound like the thermostat as you suspect. Not a difficult job, will require coolant to be drained and then bled once thermostat is replaced, and that's about it.

[peterzoom]

Thanks for the info, guess thats my weekend project sorted1

[motco]

Z Roadster forum may well have a piece on doing the job.

[NickXX]

I had the same problem on my 318iS. New thermostat from BMW (£25) and about half an hour of fitting it has made the heater nice and toasty again. Temp rises to the middle of the gauge now and just sits there.

[NickXX]

anonymous said:

[redacted]

True, but I had the same symptoms above. New £25 thermostat fixed it. They are heavily damped in the middle though - I bought an oil temp gauge for my 318 to keep a better eye on things.