Quick urgent thermostat help needed - Page 2

Arctic · 11th August 2011, 16:09

Quote:

Originally Posted by chrislloydie

Drove the car into work this morning, 55 miles. Mostly 50mph and 70mph cruising on motorway. OBD temperaturatue Rose to 85 degrees after about 4 miles then stayed between 85 and 89 degrees for entire journey. That's up from average of 60 degrees on previous same run. Will continue to monitor it during warmer weather.

But so far im well happy with this cheap and easy solution to the thermostat problem.

Hi Chris
it looks like i might need one of these how as it been since you fitted it, and do you have the link please Arctic.

chrislloydie · 11th August 2011, 17:58

It's a Gates thermostat, TH01489 is the part number. I ordered mine from rockauto.com. It cost £9.90 including delivery and arrived the next day. you will need something to cut the steel band holding your Top hose on, I used a cheap dremmel type rotary tool which did the job fine. Took about half hour to fit all in including draining some coolant and refilling etc.

I've monitored the car about twice weekly using the OBD and its working as it should. Sits at 88/89 degrees. Rises to about 91/92 then opens and drops to 86/87 again.

spyder · 11th August 2011, 18:26

Quote:

Originally Posted by Arctic

Hi Chris
it looks like i might need one of these how as it been since you fitted it, and do you have the link please Arctic.

Just ordered one, they only have 4 left in stock, £9.96 1st class mail.

Arctic · 11th August 2011, 23:13

Quote:

Originally Posted by chrislloydie

It's a Gates thermostat, TH01489 is the part number. I ordered mine from rockauto.com. It cost £9.90 including delivery and arrived the next day. you will need something to cut the steel band holding your Top hose on, I used a cheap dremmel type rotary tool which did the job fine. Took about half hour to fit all in including draining some coolant and refilling etc.

I've monitored the car about twice weekly using the OBD and its working as it should. Sits at 88/89 degrees. Rises to about 91/92 then opens and drops to 86/87 again.

HI
Thanks Chris/Craig
Will order one and see how it turns out, i am hoping it as gonebut it seems it has because i am only reaching 74 degrees thats after a 5 mile dash down the motorway after pottering around town for an hour after going to carls it was 71, by the time i got home some 5 miles it had only reached 74

pinebob · 12th August 2011, 09:02

hi guys just ordered one of these just in case!!!.what i do not understand what happens to the old stat do you just forget it or do you have to remove.

jontyp · 12th August 2011, 09:12

Well, assuming the old thermostat has failed "open" as seems most common then you leave it in and forget about it. It has effectively become a tube.

pinebob · 12th August 2011, 09:21

cheers jontyp been through all the posts on stat but could not see any where what happens to old stat.

T-Cut · 12th August 2011, 10:51

Quote:

Originally Posted by pinebob

been through all the posts on stat but could not see any where what happens to old stat.

It's discussed in other threads. From what I've read, the OEM (88C) stats don't fail open, they start opening too soon after a few years service. Apparently, when these cool running stats are examined, they are always closed. This means the valve works OK otherwise the engine would overheat. But as it warms, the valve opens too early and so coolant is flowing through the system before it gets hot enough. This leads to typical running temperatures of anything between 60 and 80C. By inserting a second in-line stat the flow to the radiator is halted until that stat lets it through. These stats are from different manufacturers and seem more reliable. There are two approaches to do this fix. One involves inserting a demountable aluminium housing in the upper hose. The easier way is the in-hose method, which seems favoured by the likes of Renault. This doesn't require cutting the hose, so is in effect, reversible and considerably cheaper. Both methods work. Raising the running temperature to 90C and above not only makes the heater more effective, but reportedly improves fuel consumption.

TC

Arctic · 12th August 2011, 11:58

HI T-CUt
Very interesting and thank you for explaining is there an how to fit these in-hose thermostats if so will someone please put up the link appreciated Arctic

PS have just ordered Gates TH01489

jontyp · 12th August 2011, 14:15

Here you go Arctic, try this for Jules' original Renault 5 thermostat install which, I presume, is pretty much an identical procedure.

11th August 2011, 17:58	#12
chrislloydie Posted a thing or two MG ZT 135 CDTI+ Auto Royal Blue with Synergy 2. 75 Tourer cdti club Se Auto, Royal Blue, synergy 2 Join Date: Oct 2008 Location: Bancroft, Milton Keynes Posts: 1,906 Thanks: 0 Thanked 0 Times in 0 Posts	It's a Gates thermostat, TH01489 is the part number. I ordered mine from rockauto.com. It cost £9.90 including delivery and arrived the next day. you will need something to cut the steel band holding your Top hose on, I used a cheap dremmel type rotary tool which did the job fine. Took about half hour to fit all in including draining some coolant and refilling etc. I've monitored the car about twice weekly using the OBD and its working as it should. Sits at 88/89 degrees. Rises to about 91/92 then opens and drops to 86/87 again. __________________ Chris

12th August 2011, 09:12	#16
jontyp Avid contributor ZT CDTi Join Date: Sep 2010 Location: Sandbach Posts: 139 Thanks: 0 Thanked 0 Times in 0 Posts	Well, assuming the old thermostat has failed "open" as seems most common then you leave it in and forget about it. It has effectively become a tube. __________________ The older I get, the faster I was.

12th August 2011, 11:58	#19
Arctic Give to Learn Freelander 2 Join Date: Aug 2010 Location: West Midlands Posts: 18,736 Thanks: 1,155 Thanked 6,407 Times in 3,874 Posts	HI T-CUt Very interesting and thank you for explaining is there an how to fit these in-hose thermostats if so will someone please put up the link appreciated Arctic PS have just ordered Gates TH01489 __________________ Arctic Givology Learn to Give Everything is Achievable ad altiora tendo. Check out our Nano meet dates http://www.midlandsnanomeets.co.uk/ http://www.the75andztclub.co.uk/index.php?thepage=howto " You do the work , we supply the expertise "

12th August 2011, 14:15	#20
jontyp Avid contributor ZT CDTi Join Date: Sep 2010 Location: Sandbach Posts: 139 Thanks: 0 Thanked 0 Times in 0 Posts	Here you go Arctic, try this for Jules' original Renault 5 thermostat install which, I presume, is pretty much an identical procedure. __________________ The older I get, the faster I was.

12th August 2011, 09:02	#15
pinebob Posted a thing or two rover75 cdt Join Date: Mar 2011 Location: ALFORD lincolnshire Posts: 1,216 Thanks: 107 Thanked 53 Times in 40 Posts	hi guys just ordered one of these just in case!!!.what i do not understand what happens to the old stat do you just forget it or do you have to remove.

12th August 2011, 09:21	#17
pinebob Posted a thing or two rover75 cdt Join Date: Mar 2011 Location: ALFORD lincolnshire Posts: 1,216 Thanks: 107 Thanked 53 Times in 40 Posts	cheers jontyp been through all the posts on stat but could not see any where what happens to old stat.