Temp gauge

Shez2908 · 21st April 2022, 12:05

Hi Any advice please would be appreciated.. my temp gauge is dropping to 0 when driving and I can hear the fan coming on😬..is there anything I can check before booking it in?.also I’m looking for a reputable garage/mechanic in Sedgefield/Durham area preferably who likes working on “the older” car😊..Thanks in advance..

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trikey · 21st April 2022, 12:11

Sounds like a lack of water or an airlock, you need Dave Johnson at fencehouses, send me a private message and I’ll give you his number.

stevestrat · 21st April 2022, 13:18

Could be a dodgy temperature sensor or wiring. If the ECU loses the signal it defaults to "panic mode" and turns the fan on.

SD1too · 22nd April 2022, 09:12

Quote:

Originally Posted by stevestrat

Could be a dodgy temperature sensor or wiring. If the ECU loses the signal it defaults to "panic mode" and turns the fan on.

This is the explanation given in RAVE Sheran. Initially try cleaning and reseating the sensor connector.

Simon

xsport · 23rd April 2022, 10:42

once it is removed there should be an escape of fluid from the block , pretty much immediately. if not it should release any air before filling the void and rising up . at least this is what i found. This was on a cold engine with the reservoir cap removed.

T-Cut · 23rd April 2022, 15:03

The temperature gauge will drop to the 'Off' position when the coolant temperature sensor signal is lost. It's typically due to muck and vibration in the wiring connector plug. As a safety measure, the fan responds by turning on to cool what could be an overheating engine. A good reconnection will fix the problem. No other steps are required. The sensor and its connector are located at the coolant outlet elbow from the head (RHS as you look at it from the front).

TC

Shez2908 · 30th April 2022, 11:27

That’s great.. thanks for all the advice👌😊

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21st April 2022, 12:05	#1
Shez2908 Newbie MGZT Join Date: Aug 2019 Location: Sedgefield County Durham Posts: 18 Thanks: 6 Thanked 2 Times in 2 Posts	Temp gauge Hi Any advice please would be appreciated.. my temp gauge is dropping to 0 when driving and I can hear the fan coming on😬..is there anything I can check before booking it in?.also I’m looking for a reputable garage/mechanic in Sedgefield/Durham area preferably who likes working on “the older” car😊..Thanks in advance.. Sent from my iPhone using Tapatalk

21st April 2022, 12:11	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,762 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Sounds like a lack of water or an airlock, you need Dave Johnson at fencehouses, send me a private message and I’ll give you his number. __________________ Lest we forget..

21st April 2022, 13:18	#3
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,462 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Could be a dodgy temperature sensor or wiring. If the ECU loses the signal it defaults to "panic mode" and turns the fan on. __________________ Steve T4 Location Map

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23rd April 2022, 10:42	#5
xsport Posted a thing or two rover 75 club se Join Date: Apr 2011 Location: Leicester Posts: 1,636 Thanks: 358 Thanked 419 Times in 310 Posts	once it is removed there should be an escape of fluid from the block , pretty much immediately. if not it should release any air before filling the void and rising up . at least this is what i found. This was on a cold engine with the reservoir cap removed.

23rd April 2022, 15:03	#6
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,751 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	The temperature gauge will drop to the 'Off' position when the coolant temperature sensor signal is lost. It's typically due to muck and vibration in the wiring connector plug. As a safety measure, the fan responds by turning on to cool what could be an overheating engine. A good reconnection will fix the problem. No other steps are required. The sensor and its connector are located at the coolant outlet elbow from the head (RHS as you look at it from the front). TC

30th April 2022, 11:27	#7
Shez2908 Newbie MGZT Join Date: Aug 2019 Location: Sedgefield County Durham Posts: 18 Thanks: 6 Thanked 2 Times in 2 Posts	That’s great.. thanks for all the advice👌😊 Sent from my iPhone using Tapatalk