correct coolant temp?

Wilmac · 2nd May 2012, 14:40

My cdt shows an OBD temp reading of between 77 - 79 when the temp gauge is at " 9 o'clock " after about 3 miles.

Is this reading correct or what is the normal operating temp with a fully warmed engine ????

ZedTeeTee · 2nd May 2012, 14:49

Sounds a bit cool to me, once mine is warmed up it hits around 88 degrees according to the OBD. I queried this a while ago and was told that is pretty much spot on where it should be.

T-Cut · 2nd May 2012, 14:55

The thermostat is designed to open at about 88C, so I'd regard that as the lower end of the desirable range. The upper end of normal in MGR terms (the gauge) is 115C, but that might be a little high for most people. Diesels are known to be most efficient when running 'hot' (ask the trucker companies).

TC

Wilmac · 2nd May 2012, 18:57

thanks ... any suggestions how to correct this without having to replace thermostat .. believe this is quite a difficult job..

Kiltman · 2nd May 2012, 19:07

Try the in-line thermostat mod, use the search function to find some great guides.

SD1too · 2nd May 2012, 20:06

Quote:

Originally Posted by Wilmac

My cdt shows an OBD temp reading of between 77 - 79 when the temp gauge is at " 9 o'clock " after about 3 miles.

Is this reading correct or what is the normal operating temp with a fully warmed engine ????

Wilbert,

I would give your diesel a bit longer than 3 miles to reach "normal operating temperature". I would monitor the temperature during a variety of journeys and if it stays in the range you've quoted then your thermostat may be faulty.

Bear in mind that the temperature gauge will indicate "normal" over a coolant temperature range of 75 to 115 degrees so it's useless as a warning device.

Simon.

bl52krz · 5th May 2012, 21:47

Quote:

Originally Posted by Wilmac

My cdt shows an OBD temp reading of between 77 - 79 when the temp gauge is at " 9 o'clock " after about 3 miles.

Is this reading correct or what is the normal operating temp with a fully warmed engine ????

Perfectly normal to show that temp at the 9 oclock position.

Jakg · 5th May 2012, 22:00

What engine do you have?

HarryM1BYT · 6th May 2012, 08:57

Quote:

Originally Posted by Jakg

What engine do you have?

It is a CDT and 3 miles is no where near far enough for it to get to full temperature. Watch the OBD until it peaks, then report back.

mikeart · 6th May 2012, 09:15

Sorry folks but what is ...."cdt shows an OBD temp reading" thanks

2nd May 2012, 14:40	#1
Wilmac Avid contributor 75 Connie Saloon cdt (03) Join Date: Jan 2012 Location: Portglenone Posts: 194 Thanks: 17 Thanked 1 Time in 1 Post	correct coolant temp? My cdt shows an OBD temp reading of between 77 - 79 when the temp gauge is at " 9 o'clock " after about 3 miles. Is this reading correct or what is the normal operating temp with a fully warmed engine ????

6th May 2012, 09:15	#10
mikeart Loves to post Rover 75 classic 4d ... lpg conversion Join Date: Apr 2012 Location: Maidstone Kent Posts: 321 Thanks: 0 Thanked 2 Times in 1 Post	Sorry folks but what is ...."cdt shows an OBD temp reading" thanks __________________ http://i149.photobucket.com/albums/s...ture12OPTI.jpg Seasick Steve = you can't teach an old dog new tricks An original radio/CD now fitted DRL's fitted below front bumper Refurbished wheel covers, and LPG system remapped next job finish rear sensors. Have a trip down memory lane! On our website.

2nd May 2012, 14:49	#2
ZedTeeTee This is my second home Rover 75 Saloon Join Date: Feb 2011 Location: Stanley Posts: 3,334 Thanks: 240 Thanked 303 Times in 172 Posts	Sounds a bit cool to me, once mine is warmed up it hits around 88 degrees according to the OBD. I queried this a while ago and was told that is pretty much spot on where it should be.

2nd May 2012, 14:55	#3
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,753 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	The thermostat is designed to open at about 88C, so I'd regard that as the lower end of the desirable range. The upper end of normal in MGR terms (the gauge) is 115C, but that might be a little high for most people. Diesels are known to be most efficient when running 'hot' (ask the trucker companies). TC

2nd May 2012, 18:57	#4
Wilmac Avid contributor 75 Connie Saloon cdt (03) Join Date: Jan 2012 Location: Portglenone Posts: 194 Thanks: 17 Thanked 1 Time in 1 Post	thanks ... any suggestions how to correct this without having to replace thermostat .. believe this is quite a difficult job..

2nd May 2012, 19:07	#5
Kiltman I really should get out more....... MG ZT CDTi 135 / Rover 75 Club SE 160 Join Date: Jun 2011 Location: Leek Posts: 2,013 Thanks: 235 Thanked 128 Times in 104 Posts	Try the in-line thermostat mod, use the search function to find some great guides.

5th May 2012, 22:00	#8
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	What engine do you have?