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DISCO3.CO.UK > Webasto Fuel Burning Heater

Car taking a while to get warm, even with the FBH running

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Triplet3

Member Since: 26 Nov 2016
Location: Southampton
Posts: 320

2007 Discovery 3 TDV6 GS Manual Arctic Frost

Car taking a while to get warm, even with the FBH running

How long should the car take to get warm if the FBH is running?

Mine seems to be taking an age still

The FBH is running (I can hear it, see/feel smoke/heat from the exhaust) The smoke clears up after half a minute.

Maybe im just being to optimistic but I thought the coolant would get warmer noticeably quicker than usual

Chris 1995 Discovery 1 300TDI
2006 Discovery 3 TDV6 - Gone
1979 Series 3 109" - Gone

14th Dec 2017 3:51 pm

lynalldiscovery

Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti Grey

My commute is 5 miles on the button the first half is 30mph limit so cant load the motor at all.
Normal weather Im just at full temp on the gauge as I arrive at work
Getting colder (sub7degc) fbh kicks in and its gets warmer quicker than normal.
Zero degrees ish and fbh running and its struggles to hit normal as I get to work.

So in the current weather and on normal roads I would say at least 4/5 miles before it shows full temp but even then its not really at full temp so add on another 2/3 miles and you will be cooking on gas.

14th Dec 2017 3:59 pm

Gazellio

Member Since: 08 Jan 2011
Location: Chilterns
Posts: 4130

2009 Discovery 4 TDV6 SE Auto Indus Silver

I start mine remotely 25 minutes before starting car and without engine even starting the temp gauge is between 1/3 & 1/2 so nearly full operating temp when I get in. I suspect some FBH unit are a bit coked up and not operating efficiently.

14th Dec 2017 4:39 pm

Felstmiester

Member Since: 12 Dec 2016
Location: Hertfordshire
Posts: 211

2006 Discovery 3 TDV6 HSE Lux Auto Java Black

After leaving our fbh on for 30 mins before starting the temp gauge is as shows. Is this normal? Reason I ask is I’m trying to solve a bizarre problem I can’t find an answer to even on this forum.

14th Dec 2017 6:59 pm

tayaste

Member Since: 15 May 2013
Location: Chester
Posts: 7633

2008 Discovery 3 TDV6 HSE Auto Stornoway Grey

I run my fbh for 45 mins In this weather and when I start the car up it’s at its operating temp, however, as soon as I drive off it does drop a little but soon gets back to mid.

14th Dec 2017 7:27 pm

Gazellio

Member Since: 08 Jan 2011
Location: Chilterns
Posts: 4130

Mine is higher than that after 25 minutes but yours is warm enough for a safe guaranteed non glowplug start with no cold strain on the engine.

14th Dec 2017 9:39 pm

lynalldiscovery

Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

Heres mine this morning approx -1/2 degc and fbh was run for its usual 30 minutes.
I also notice after running the fbh the alternator runs at .1 to .2 volts less with a warm engine.

15th Dec 2017 7:16 am

Gazellio

Member Since: 08 Jan 2011
Location: Chilterns
Posts: 4130

^ THat's about the same as mine with a full cycle

15th Dec 2017 8:29 am

Felstmiester

Member Since: 12 Dec 2016
Location: Hertfordshire
Posts: 211

lynalldiscovery wrote:
Heres mine this morning approx -1/2 degc and fbh was run for its usual 30 minutes.
I also notice after running the fbh the alternator runs at .1 to .2 volts less with a warm engine.

so mine is not getting as warm with the 30mins fbh run. No matter how long the fbh runs it always starts and ticks over lumpy and won’t rev.

15th Dec 2017 11:30 pm

Triplet3

Member Since: 26 Nov 2016
Location: Southampton
Posts: 320

Took mine to work Monday and found it had warmed 3- 4 miles in with an outside temp of 0degrees. Mix of 30 and 40mph limits. Might think about investing in a remote for the fbh but funds are empty having just bought an IID and needing a new battery

Timing seems to be about normal so I think I might have just been expecting too much initially

1995 Discovery 1 300TDI
2006 Discovery 3 TDV6 - Gone
1979 Series 3 109" - Gone

19th Dec 2017 7:15 pm

Triplet3

Member Since: 26 Nov 2016
Location: Southampton
Posts: 320

[quote="Felstmiester"]

lynalldiscovery wrote:
No matter how long the fbh runs it always starts and ticks over lumpy and won’t rev.

Mine will cold start no issues at -3 and run as smoothly as it would in summer. Sounds like it's either glowplugs or fuel problem. I presume it runs fine when it's warmed up and during summer months? 1995 Discovery 1 300TDI
2006 Discovery 3 TDV6 - Gone
1979 Series 3 109" - Gone

19th Dec 2017 7:28 pm

Felstmiester

Member Since: 12 Dec 2016
Location: Hertfordshire
Posts: 211

I’m 99.9% sure the problem I’m having has nothing to do with glow plugs. Running the fbh via the remote will heat the cylinders enough to fool the ecu into cutting out the glow plug cycle completely so weather the glow plugs are shot or not it shouldn’t make any difference although I do know I have a couple of glow plugs down. Put it this way. I could jump into the discovery in the morning and even if it’s -5 two heat cycles strait away without fbh and it would fire up and tick over perfectly. I have read on here of people who have no chance of there’s starting in the minuses due to all there glow plugs being shot but 30 mins with the fbh running and they have no problem.

Someone has said it could be water temp sensor but I really can’t see it as surly the temp gauge would read faulty. I am in the process of getting one to try. Hopefully it will cure it but I’m not holding my breath.

19th Dec 2017 7:58 pm

Triplet3

Member Since: 26 Nov 2016
Location: Southampton
Posts: 320

Good luck

might be worth plugging it in a reading the live data and seeing if any fault codes are logged 1995 Discovery 1 300TDI
2006 Discovery 3 TDV6 - Gone
1979 Series 3 109" - Gone

19th Dec 2017 10:15 pm

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