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7th January 2019, 10:00 | #1 |
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75 Tourer CDTi Connie SE Join Date: Jun 2017
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Warm fuzzy feeling!
I have read that the diesels normally take longer to heat up and as a result, were originally fitted with the FBH. I just wondered whether mine is behaving normally as it takes just over 5 mins for the temp needle to reach 9o'clock position most days, as I cruise along the A96 at about 60. It is also very noticeable that its get quite warm inside the cabin quickly (I tend to leave CC at 21 Deg C) and this lasts for about 15mins then the temp drops. I bought a used FBH to fit soon but if this is normal behaviour, then i may not need it, as this also occurs when we have chilly temps up here (-6 last week!). Any thoughts??
ps I havent been able to get the digital temp displayed as my attempts to get test data up on the display fails - possibly not quick enough on pressing the trip button!
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7th January 2019, 10:32 | #2 |
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MG ZT-T CDTI Auto Join Date: Feb 2014
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Normally the diesels take approximately 12 miles to get warm but if the Renault 5 thermostat has been fitted into the top hose then they do warm up much quicker.
I don't have climate just normal aircon and mine starts blowing warm air at about 3 miles so yours might well of had the same mod done. I don't have a FBH fitted.
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7th January 2019, 11:23 | #3 |
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The worrying bit for me is that you say the temp gets hot and then drops off.. I’m guessing you might have an airlock somewhere.
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7th January 2019, 12:10 | #4 |
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Neil and Trikey,
Can you confirm that if you have a normal working thermostat in the engine you can fit an additional stat in the top hose with no issue? Thanks, Peter. |
7th January 2019, 12:56 | #5 | |
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Quote:
Its not a problem but just wondered! Will have to have a feel around of the pipes to see if extra stat has been fitted.
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My 75 Tourer CDTi was born Saturday, 21st June 2003 @ 09:50 My 75 was the 18,749th 75 Tourer to run off the production line, out of 27,407 It was the 195th 75 Tourer CDT Connoisseur SE (135) to be made out of 2,074 and the 1,789th 75 Tourer in Wedgewood Blue Metallic (code: JEL) to be made out of 1,871 Wedgewood Blue Metallic 75 Tourers |
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7th January 2019, 14:17 | #6 | |
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75 Tourer CDT MK2 manual in Glorious Grey Join Date: Jan 2018
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Quote:
Don't do it. If the original fails open (usual) you could get away with adding the inline temporarily. How long is temporary? That's like asking "How long is a piece of string?". Me? I would take out the failed original and install a full size inline thermostat (not the smaller Renault one), so future replacements are easy. Cheers, Glenn
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7th January 2019, 15:20 | #7 |
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A 'normally' working original thermostat, does not require anything else, please confirm via digital readout that coolant temp reaches correct operating values when car is fully warmed up, after several miles of driving, if the car has never had a replacement original stat it would have almost certainly failed open.
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7th January 2019, 15:21 | #8 |
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I have the Renault stat fitted in my diesel, it has the original stat (sticking open) still fitted and has had no issues for the last 50k miles, I reckon that a long enough test👍
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11th January 2019, 09:29 | #9 | |
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Quote:
The original owner of the car did the mod. All I can say is that in the past 3 years that I have had the car I haven't had any issues. This was done by Jules and he explains it: https://www.the75andztclub.co.uk/for...+thermostat%29
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11th January 2019, 12:04 | #10 |
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As far as the engine getting up to temperature in the time described sounds about right. I'd treat the cabin temperature as a different issue.
I think I'd be checking to see if the cabin temperature sensor is blocked up (internally) with fluff. I strongly suspect our 1.8 is. Also when it is cold in the cabin and the engine hot, with the AC on fully auto it will blast a lot of hot air into the footwells until the sensor detects the desired temperature. Once the temperature is reached it will moderate the amount of flow and the temperature of the flow - which can feel like it all of a sudden blows cold (especially over the knees). I strongly suspect that this effect is exacerbated if the temperature sensor is effectively being insulated from temperature changes by being full of fluff so giving a delayed reaction to temperature fluctuations. Just a theory of course...
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Need a T4 ?: T4 Owners Map thanks to Stevestrat ( use at your own risk) Where?: https://en.wikipedia.org/wiki/Tanelorn Mods/Retrofits: PCV vortex 'filter'; bluetooth; inline thermostat; reversing sensors; plenum spyhole ; headlamp washers ; Diy mp3 player replacing CD multichanger; FBH with remote; Headlamp washers; black/chrome front grille, rear blind; Xenon projectors To do: puddle lights; 2 Din cd/nav to fit; boot release button |
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