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Hot temp/pressure issues; thoughts? 3.0i

Discuss problems you have had or are having with your Z4
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enuff_zed
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Hot temp/pressure issues; thoughts? 3.0i

Post by enuff_zed » Tue Jul 19, 2022 9:14 pm

Johnstanners318 wrote: Tue Jul 19, 2022 5:14 pm Thanks for the input guys. Its been an interesting project so far. Learning a lot about the car from Bigwynn. Once this little gremlin is sorted the resto is should be almost finished.
Gutted you just called my mate Stuart 'a little gremlin'!
Big Gremlin maybe................... :D
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Hot temp/pressure issues; thoughts? 3.0i

Post by bigwinn » Tue Jul 19, 2022 9:23 pm

enuff_zed wrote: Tue Jul 19, 2022 9:14 pm
Johnstanners318 wrote: Tue Jul 19, 2022 5:14 pm Thanks for the input guys. Its been an interesting project so far. Learning a lot about the car from Bigwynn. Once this little gremlin is sorted the resto is should be almost finished.
Gutted you just called my mate Stuart 'a little gremlin'!
Big Gremlin maybe................... :D
Oi

I’m a sensitive little soul you know
If the forum helped you, why not help the forum back. Thats the Z4 way! :thumbsup:

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Hot temp/pressure issues; thoughts? 3.0i

Post by pvr » Tue Jul 19, 2022 10:18 pm

bigwinn wrote: Tue Jul 19, 2022 9:23 pm
enuff_zed wrote: Tue Jul 19, 2022 9:14 pm
Johnstanners318 wrote: Tue Jul 19, 2022 5:14 pm Thanks for the input guys. Its been an interesting project so far. Learning a lot about the car from Bigwynn. Once this little gremlin is sorted the resto is should be almost finished.
Gutted you just called my mate Stuart 'a little gremlin'!
Big Gremlin maybe................... :D
Oi

I’m a sensitive little soul you know
Can be fixed with a less sensitive sensor :P
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Hot temp/pressure issues; thoughts? 3.0i

Post by bigwinn » Tue Jul 19, 2022 10:19 pm

pvr wrote: Tue Jul 19, 2022 10:18 pm
bigwinn wrote: Tue Jul 19, 2022 9:23 pm
enuff_zed wrote: Tue Jul 19, 2022 9:14 pm Gutted you just called my mate Stuart 'a little gremlin'!
Big Gremlin maybe................... :D
Oi

I’m a sensitive little soul you know
Can be fixed with a less sensitive sensor :P
ask the missus she knows which buttons to press
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PDJ
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Hot temp/pressure issues; thoughts? 3.0i

Post by PDJ » Wed Jul 27, 2022 8:34 pm

From TIS

Electric fan
Under certain operating conditions, the engine control activates the electric fan at various speeds.

The electric fan is activated by means of a power output stage directly on the fan motor. The motor control unit activates this power output stage by means of a square-wave signal with duty factors (variable pulse width) between 10 and 90 %, thus controlling the various speeds of the electric fan. Pulse duty factors less than 5 % and greater than 95 % do not trigger activation but rather they are used for fault detection purposes. The power output stage features its own positive and ground supply.

The fan speed is influenced by the coolant temperature at the radiator outlet and the pressure in the air conditioning system. The fan speed is reduced as the vehicle speed increases.

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Hot temp/pressure issues; thoughts? 3.0i

Post by bigwinn » Sat Jul 30, 2022 7:19 pm

Well so far (touch wood)

The new expansion tank has not split
We swapped the sensor at the bottom of the rad hose and tested the fan with INPA which worked this time

So- I think, problem solved
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enuff_zed
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Hot temp/pressure issues; thoughts? 3.0i

Post by enuff_zed » Sat Jul 30, 2022 8:06 pm

bigwinn wrote: Sat Jul 30, 2022 7:19 pm Well so far (touch wood)

The new expansion tank has not split
We swapped the sensor at the bottom of the rad hose and tested the fan with INPA which worked this time

So- I think, problem solved
Obviously got everything plugged in ok? :poke: :D
HQ of 'Norfolk Zed Rescue'.
Always happy to help if I can.

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Hot temp/pressure issues; thoughts? 3.0i

Post by bigwinn » Sat Jul 30, 2022 8:11 pm

enuff_zed wrote: Sat Jul 30, 2022 8:06 pm
bigwinn wrote: Sat Jul 30, 2022 7:19 pm Well so far (touch wood)

The new expansion tank has not split
We swapped the sensor at the bottom of the rad hose and tested the fan with INPA which worked this time

So- I think, problem solved
Obviously got everything plugged in ok? :poke: :D
I checked several times

Less haste more speed
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