Water readings on Sagaris - Help

[SagDC]

hello I'm wondering if someone can help, I have a problem with my Sagaris the water reading on the dash is showing low level/empty coolant level yet when I check the physical level its fine. I've even topped up to be on the safe side only for it to spit back out back to its natural level.

I'm not technically minded so other than take it to the garage which is 45 minutes drive away I'm at a loss any help or advice would be appreciated.

thanks

[EvoOlli]

The Sagaris doesn't have a Water Level Sensor, so normally there can't be a message regarding such a problem. Which exact message did you get on the dash ?

[SagDC]

Hi EvoOlli the readings are on one of the screen menus which I've wrongly assumed was water level but I think your going to tell me its water temp not level

[EvoOlli]

OK, Water Temp....could be a faulty sensor. Which value(s) does the Display show you for the Water Temp ? Are they coherent ?
Maybe the sensor....the one which is used for the Display are not very reliable, but expensive :-)

And you could do the following: Download my Diagnosis-Software (you'll find the necessary thread here in PH) and look what the second water temp. sensor for the Engine ECU shows...so you can compare both.

[nawarne]

I,d agree with Oliver.
Almost certainly the display sensor. This located at the front of engine, located under air box on the block under No. 2 throttle body. Maybe the plug has come off or sensor is kaput.

The other temp sensor by No. 5 throttle body is just for the ecu. If engine is running OK, then sounds like it is just the front sensor. About £10 from suppliers to buy.
Nick

[Jasper Gilder]

On one of the screens it should give you a temp in numbers - it's on the screen with all the numbers and you can toggle it on the screen before the schematic display screen.

Remember the graphic won't register anything until the water temp is over 50C

[SagDC]

Thank you All, jasper I will check temp is over 50 degrees first just in case I've been too eager to find a fault if not then Nick/EvoOlli I will get the sensor checked out.

thanks again

[K4TRV]

nawarne said:

I,d agree with Oliver.
Almost certainly the display sensor....snippity................snip.... If engine is running OK, then sounds like it is just the front sensor. About £10 from suppliers to buy.
Nick

I wish @ £10!!

Try somewhere from £28/35 depending on who you buy from!

I need the same sensor (Thermistor) for air (front apron) & oil temperature and with postage no change from £60+

T

[nawarne]

K4TRV said:

nawarne said:

I,d agree with Oliver.
Almost certainly the display sensor....snippity................snip.... If engine is running OK, then sounds like it is just the front sensor. About £10 from suppliers to buy.
Nick

I wish @ £10!!

Try somewhere from £28/35 depending on who you buy from!

I need the same sensor (Thermistor) for air (front apron) & oil temperature and with postage no change from £60+

T

From TVR Car Parts site:
Part Number : TVR N7000

Product Description :
Coolant temperature sensor is compatible with all TVR Speed 6 engines and AJP V8s. The coolant temperature sensor sends it's information direct to the ECU, failure of this sensor can result in major running problems and overheating. We have sourced the higher quality Bosch Motorsport equivalent of this part for increased reliability and this is available under the part number TVR N7000 RG.

Price : £11.68 inc. VAT @ 20.00%

Price : £9.73 ex. VAT


Fits the following TVRs:
Cerbera V8, Cerbera Speed 6, Sagaris, T350,

Nick

[K4TRV]

nawarne said:

K4TRV said:

nawarne said:

I,d agree with Oliver.
Almost certainly the display sensor....snippity................snip.... If engine is running OK, then sounds like it is just the front sensor. About £10 from suppliers to buy.
Nick

I wish @ £10!!

Try somewhere from £28/35 depending on who you buy from!

I need the same sensor (Thermistor) for air (front apron) & oil temperature and with postage no change from £60+

T

From TVR Car Parts site:
Part Number : TVR N7000

Product Description :
Coolant temperature sensor is compatible with all TVR Speed 6 engines and AJP V8s. The coolant temperature sensor sends it's information direct to the ECU, failure of this sensor can result in major running problems and overheating. We have sourced the higher quality Bosch Motorsport equivalent of this part for increased reliability and this is available under the part number TVR N7000 RG.

Price : £11.68 inc. VAT @ 20.00%

Price : £9.73 ex. VAT


Fits the following TVRs:
Cerbera V8, Cerbera Speed 6, Sagaris, T350,

Nick

Correct for the ECU, however, his Dash sensor/oil temp/air temp/aircon sensor is this one:

Thermistor, coolant temperature sensor

Part NumberTVR M1275

Product Description
OE temperature sensor for coolant, oil and heating- aircon. This sensor is used in up to 5 places on the later Speed 6 engined cars to give temperature feedback. This is the front sensor in the TVR Speed 6 cylinder head and is the coolant temperature sensor for the dashboard. It is also used as the oil temperature sensor in the dry sump tank. It is the ambient air temperature sensor in the nosecone of all the Speed 6 engined cars except Cerbera. It is also used twice in the air conditioning system for measuring hot and cold air temperature in Speed 6 cars again apart from Cerbera. This is the OE part at a great price.

Price £29.94 inc. VAT @ 20.00%

Price £24.95 ex. VAT

Car Club Price £27.69 inc. VAT @ 20.00%

Car Club Price £23.08 ex. VAT

Fits the following TVRs:

Cerbera Speed 6, Sagaris, T350, Tamora, Tuscan, Tuscan 2 - PLUS Postage

[nawarne]

Oops - stand corrected!
Always thought they were interchangeable?
Nick

[EvoOlli]

The funny thing is: The N7000 is a Bosch sensor, which is very reliable, accurate and cheap.
The M1275 (the TVR sensor) is unreliable, imprecise and expensive. And TVR used it on a lot of places: OilTemp, WaterTemp, Ambient AirTemp and in the T-Cars two or three of them for controlling the heating system.

[NorfolkSteve]

So I don't suppose we are lucky enough for the N7000 and M1275 sensors to be interchangeable? Would make a good upgrade to all five if it was.

Just in case... (he asks hopefully)

[K4TRV]

nawarne said:

Oops - stand corrected!
Always thought they were interchangeable?
Nick

No worries, just trying to pass on "lessons learnt" - My 2002 Speed Six (Tam 3.6 variety) self destructed and when the very nice Dom Trickett handed back a 4.3, he informed me that mine was a seriously early model - May/Jun 2001!! So much so, it had your version of the ECU sensor in the front position (dash sensor) and also in the oil tank - When Dom replaced the block, first the sensor and its connector needed sorting (to the earlier post - they are NOT interchangeable as the connector is different, as is the response to temp for the Dash too)! So also did the Dash ECU as the "new" version also came with a new version of the dash ECU firmware. I'm just sorting the oil tank with a different sized thread for the "new" sensor!!

Happy days!

T

Edited by K4TRV on Tuesday 17th February 12:58

Edited by K4TRV on Tuesday 17th February 13:01