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Discussion Starter #1
Replaced my faulty thermostat yesterday. I was sure it was stuck open as the car would reach 90 degrees, but it took about 15 mins of town driving, at it wouldn't reach above 70 degrees on the motorway. Simple enough task. Car now reaches 90 degrees within 5 mins, despite the very cold air temperature, and of course the engine oil heats more quickly now too, resulting in less engine wear caused by driving on a cold engine. Very happy that another simple fix has made a big improvement to the general running of the car.......I wonder what'll need fixing next??
 
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Discussion Starter #3
About an hour.......most awkward thing was moving the black box that sits ontop of the thermostat housing. It's there to shield various wires from the heat, but because there is little 'play' in the wiring, I found it really awkward to get it out of the way. Be careful not to damage any of the wiring when doing this. Some people suggest to free the hose from the top of the rad, but I didn't fancey all of that water and coolant running over the air filter housing, and didn't want to remove the housing either, so I just removed the hose from the thermostat. Make sure you cover the inspection hole on the gearbox, it's DIRECTLY below the stat!!
 

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About an hour.......most awkward thing was moving the black box that sits ontop of the thermostat housing. !
Had the same problem myself ;)
Ended up putting the box back in place, but not screwing it down on the thermostat housing... :p
 

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Had my thermostat, radiator and a track rod replaced last week - Heats up better and no knocks now, great. I got my local specialist to do the work though :eek:. Anyway - He ended up having to remove the front bumper to get at the radiator fixings, he did not think this would be necessary initially BUT guess what I am doing today - removing the front bumper to replace headlights! :rant: Can you believe that!

The previous owner had put standard 156 lights in after an MOT fail because the owner prior to him had replaced a light (original GTA one) but put a LHD one in! Anyway back to original GTA RHD lights today.

Some jobs off mmy list :)
 

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I have been thinking of doing mine, except it was done about 10 months ago by Ned when the belts etc. were done, can it be stuck open already? Mine has similar symptoms, sits below 70 when cruising but hits 90 when stuck in traffic. I've changed mine on the 2.5, is it a similar job on the GTA?
 
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Discussion Starter #8
I have been thinking of doing mine, except it was done about 10 months ago by Ned when the belts etc. were done, can it be stuck open already? Mine has similar symptoms, sits below 70 when cruising but hits 90 when stuck in traffic. I've changed mine on the 2.5, is it a similar job on the GTA?
It should be a very similar fitting, not difficult if you've done it before. Odd that it should be stuffed after such a short time though. From a cold start in the morning, does the car take longer than 5 mins to reach 90 when driving in town? If it takes about 10 mins, i'd say it's gone again. A few others have said that their gauges rarely read above 70 on the motorway, especially in the cold conditions, but mine is perfect now, happily reaching 90 nice and quickly and sitting there.
 

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Mine does - After replacing my thermostat the guage is reading higher but not 90 when cruising, a bit lower. Previous to the thermostat being replaced it was reading less than 70 when cruising!
 

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When you reach 90 does your fan kick in and out?
With this cold weather, probably not.
Thermostat should be open at 90 degr.C, opening up the radiator. Fans kick in at:

- temperature for switching on 1st speed 97° C;
- temperature for switching on 2nd speed 102° C

unless the airco is on, then speed 1 is always on....

With the cold weather, opening up the radiator is probably sufficient to keep the temperature below 97, unless you're standing still.....
 
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Discussion Starter #13
With this cold weather, probably not.
Thermostat should be open at 90 degr.C, opening up the radiator. Fans kick in at:

- temperature for switching on 1st speed 97° C;
- temperature for switching on 2nd speed 102° C

unless the airco is on, then speed 1 is always on....

With the cold weather, opening up the radiator is probably sufficient to keep the temperature below 97, unless you're standing still.....
Very good point there mate.......I checked my fan was kicking in and out after the stat change, but of course the car was stationary.....agreed, the car does not get hot enough in traffic during this weather for the fan to have the need to cut in....and 90 degrees on the gauge will not be 100 % accurate either.
 

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It should be a very similar fitting, not difficult if you've done it before. Odd that it should be stuffed after such a short time though. From a cold start in the morning, does the car take longer than 5 mins to reach 90 when driving in town? If it takes about 10 mins, i'd say it's gone again. A few others have said that their gauges rarely read above 70 on the motorway, especially in the cold conditions, but mine is perfect now, happily reaching 90 nice and quickly and sitting there.
It's a little odd now, driving to London last night it was about 1*C and it went above 70, so despite the cold air it has gone higher than it has in the previous few months while cruising. I never really drive in town so it's hard to say, but when I leave for work, sticking to B roads at around 30mph av it's normally just below 70 after 10 mins. Fans do kick in around 90 though. I'll leave it 'til the summer and see what happens. I think it's sticking open sometimes, but not always if that's possible?
 

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About an hour.......most awkward thing was moving the black box that sits ontop of the thermostat housing. It's there to shield various wires from the heat, but because there is little 'play' in the wiring, I found it really awkward to get it out of the way. Be careful not to damage any of the wiring when doing this.
Finally got around to attempting the thermostat change but couldnt get the bottom screw out the wiring box. It's head is done, will need to get a drillbit to remove it and then just replace with the top screw only.
 
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Discussion Starter #16
Finally got around to attempting the thermostat change but couldnt get the bottom screw out the wiring box. It's head is done, will need to get a drillbit to remove it and then just replace with the top screw only.
What a PITA..............be careful not to damage those wires!:thumbs:
 
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