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+--- Thread: HDI not heating (/showthread.php?tid=19347)
HDI not heating - LeeroyNI - 05-12-2013
Ok, so just noticed my X reg HDI won't heat above 70, not sure if this is meant to be. Previously had a ph1 which always sat at 90, same with two TDI's I've owned too. Is this normal?
RE: HDI not heating - Lego Jon - 05-12-2013
Mines exactly the same.
RE: HDI not heating - Paul_13 - 05-12-2013
Change the thermostat incase it's stuck open
RE: HDI not heating - LeeroyNI - 05-12-2013
Will it be in the Hayne's manual? I'm useless when it comes to stuff like this haha
RE: HDI not heating - mikey b - 06-12-2013
Yep I should be in there most stuff like that should be
RE: HDI not heating - Matt - 06-12-2013
Iirc hdi's run cooler. I think mine used to struggle to overheat.
So I wouldn't worry to much
RE: HDI not heating - Poodle - 06-12-2013
Should sit just below eighty, most likely the stat at fault. It is covered in the haynes.
RE: HDI not heating - rd070707 - 06-12-2013
How long should it take to get there? I'm driving around town a lot and it seems to take forever to get upto running temp, but it does eventually
RE: HDI not heating - C2K - 06-12-2013
My Hdi sits around 70 this time of year, always has done. It doesn't generate a great deal of heat at constant throttle, and you have a tremendous amount of wind chill over the radiator.
If you are driving gently, it can take a good few miles to start giving you meaningful heat from the heaters.
RE: HDI not heating - Poodle - 06-12-2013
Mine takes about 15 minutes to get up to temp because the pre-heater and glowies are past it, sits happily at 78* once it gets there though. The old hdi barely reached 70 when it had a knackered stat and took sooooo long to get warm.
RE: HDI not heating - Kezzieboy - 06-12-2013
Where's best to get a new stat from? As clearly most second hand ones are going to have the same problem :-P mine has always run cold tbh, since I bought it on 75k nearly 5 years ago!
RE: HDI not heating - gareth7 - 06-12-2013
any motor factors............or
http://www.carparts4less.co.uk/car-thermostat
RE: HDI not heating - LeeroyNI - 07-12-2013
(06-12-2013, 10:56 AM)rd070707 Wrote: How long should it take to get there?
Did a 2 hour trip to Lisnaskea and still didn't move above 70
RE: HDI not heating - Jonny81191 - 07-12-2013
Someone give the 406 thermostat a try, both mine have sat at 80+ and get there very quick in comparison.
And they're more economical too, possibly as a result of this.
RE: HDI not heating - LeeroyNI - 07-12-2013
I'll give it a try, can't imagine anything bad happening.
RE: HDI not heating - Lego Jon - 07-12-2013
So the 406 HDI thermostat fits and makes it more economical?
RE: HDI not heating - Jonny81191 - 07-12-2013
(07-12-2013, 06:11 PM)Lego Jon Wrote: So the 406 HDI thermostat fits and makes it more economical?
I don't know. It'll fit, of that I'm 99% certain.
And the economy increase would be down to the engine running at a higher temperature, 70 is too cold.
RE: HDI not heating - Lego Jon - 07-12-2013
Interesting. I shall toddle off and buy a new stat asap.
RE: HDI not heating - Jonny81191 - 07-12-2013
Basically what I'll be doing is replacing mine anyway, as it's screwed (won't exceed 70 unless absolutely thrashed in 29* temperatures in France
)So I'll just give the 406 one a try. If someone does it first, I'd like to know the results!
RE: HDI not heating - Poodle - 07-12-2013
I've got a 307 90* stat that i've been meaning to test for ages, in theory it should mean hotter, more efficient combustion.
RE: HDI not heating - rd070707 - 07-12-2013
So it would be ideal for us to run above the 80 degrees we do as standard?
RE: HDI not heating - Jonny81191 - 07-12-2013
Yeah, ideally. But a lot of us don't even see 75* so anything would be an improvement
RE: HDI not heating - rd070707 - 07-12-2013
I run at 78-80 once the stat opens