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Fan on constantly from start up - help - CODES ADDED

Discuss problems you have had or are having with your Z4
synthedup
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Fan on constantly from start up - help - CODES ADDED

Post by synthedup » Sun Feb 11, 2018 3:28 pm

Hi all.

Another problem here..... starting to get me down now.

I have noticed today that my fan comes on full from
Start up. The temp gage sits at 12oclock once warm and drives fine.

Anyone has a similar issue?

It’s 2006, 2.0i N46 engine.

Possible water pump? A sensor?

Is it safe to drive as long as the temp gage says it’s iver heading?
Last edited by synthedup on Mon Feb 12, 2018 7:16 pm, edited 1 time in total.

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ben g
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Fan on constantly from start up - help

Post by ben g » Sun Feb 11, 2018 3:51 pm

Your thermostat might be conked out? I replaced mine a while back, though I can't remember why I did it.
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Fan on constantly from start up - help

Post by raymond.harper » Sun Feb 11, 2018 3:59 pm

Will be alright to drive. Is it possible you have left the air con on ?

synthedup
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Fan on constantly from start up - help

Post by synthedup » Sun Feb 11, 2018 4:05 pm

ben g wrote: Sun Feb 11, 2018 3:51 pmYour thermostat might be conked out? I replaced mine a while back, though I can't remember why I did it.

Is it an easy diy job?
raymond.harper wrote: Sun Feb 11, 2018 3:59 pmWill be alright to drive. Is it possible you have left the air con on ?

I normally leave it clicked so it comes on when the ensure is on. The car had been stood a while though. Would that cause this?

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Fan on constantly from start up - help

Post by Smartbear » Sun Feb 11, 2018 5:09 pm

When the fan on my n52 started doing the same thing it was an early warning sign of impending nuclear meltdown of the electronic water pump :cry:
I’d get the codes read by a decent Indy sooner rather than later, (my temp gauge stayed in the middle as well)....
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synthedup
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Fan on constantly from start up - help

Post by synthedup » Sun Feb 11, 2018 7:10 pm

The parts dont seem expensive at all from Europart.

Has anyone ever replaced the water pump on the 2.0i N46 engine? any guidance?

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Fan on constantly from start up - help

Post by Smartbear » Sun Feb 11, 2018 7:21 pm

synthedup wrote: Sun Feb 11, 2018 7:10 pmThe parts dont seem expensive at all from Europart.

Has anyone ever replaced the water pump on the 2.0i N46 engine? any guidance?
Hi, you need to find out what pump your engine has, the electronic version is over £500 on that site! If you have the mechanical one I doubt the car would have the fan issue immediately on starting :thumbsup:
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Fan on constantly from start up - help

Post by Ducklakeview » Sun Feb 11, 2018 7:28 pm

The waterpump won't be the cause on the 2.0 engine. Have you had a code read, as there are a couple of possible causes.

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Fan on constantly from start up - help

Post by synthedup » Sun Feb 11, 2018 7:50 pm

Ducklakeview wrote: Sun Feb 11, 2018 7:28 pmThe waterpump won't be the cause on the 2.0 engine. Have you had a code read, as there are a couple of possible causes.

Mike
Hi again :)

Im not sure if there are any codes so off to the garage tomorrow.

I have an ongoing issue with the oil level sensor so the check engine light has been on for a few days anyway ( i need to get the code so i can post it on here for further help)

I will keep you all posted :)

Out of interest what are the possible causes?

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Fan on constantly from start up - help

Post by Smartbear » Sun Feb 11, 2018 7:59 pm

Ducklakeview wrote: Sun Feb 11, 2018 7:28 pmThe waterpump won't be the cause on the 2.0 engine. Have you had a code read, as there are a couple of possible causes.

Mike
My bad, just going on my n52 experience :oops:
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synthedup
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Fan on constantly from start up - help

Post by synthedup » Sun Feb 11, 2018 8:48 pm

Ducklakeview wrote: Sun Feb 11, 2018 7:28 pm The waterpump won't be the cause on the 2.0 engine. Have you had a code read, as there are a couple of possible causes.

Mike
So I have done a little googling and I think it may be the radiator outlet temp sensor causing the radiator to come on.

I have unplugged the sensor and the fan stops, reading online this indicates the sensor is faulty.

I have plugged the sensor back in and it seems to have fixed the problem for now. I assume unplugging it and plugging it in again has 'reset' something (for now)

I'm going to get the codes read but hoping this is all it is. a cheap fix :)

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Fan on constantly from start up - help

Post by synthedup » Mon Feb 12, 2018 7:16 pm

Ducklakeview wrote: Sun Feb 11, 2018 7:28 pmThe waterpump won't be the cause on the 2.0 engine. Have you had a code read, as there are a couple of possible causes.

Mike

Hi guy,

So I am getting two codes currently:

2F17 - forced switch electronic transmission control (EGS)

2F9E - terminal oil level sensor.

I have had two new sensors fitted this month thinking the first replacement was faulty.

Any help?

Thanks!!

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Fan on constantly from start up - help - CODES ADDED

Post by synthedup » Mon Feb 12, 2018 11:29 pm

I’m reading online the 2F17 - forced switch electronic transmission control (EGS) is related to an automatic car?? Mine is a manual so very strange..

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Fan on constantly from start up - help - CODES ADDED

Post by srhutch » Tue Feb 13, 2018 7:56 am

You need to clear the codes and see if they come back. They could be old ones knowing you have had sensors replaced recently.
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Fan on constantly from start up - help - CODES ADDED

Post by synthedup » Tue Feb 13, 2018 8:30 am

srhutch wrote: Tue Feb 13, 2018 7:56 am You need to clear the codes and see if they come back. They could be old ones knowing you have had sensors replaced recently.

Morning srhutch,


Since replacing the sensors all codes have been cleared and these have come back.

Just drove to the train station and the fan was on full again from the start :(

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