heater plug light gone out

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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briangoo
2.0 16v
Posts: 154
Joined: Fri Jan 20, 2012 7:43 pm

heater plug light gone out

Post by briangoo »

hi all ive noticed the heater plug light on the clocks doesn't come on any more when you put the key to no.2. I looked in the hand book & I think the no.24 fuse in the engine bay fusebox next to the battery is the 1 for the plugs but I opened it & it looks nothing like the handbook layout. any ideas plz as when the cold weather comes then I guess they will be needed :?: :?: :?: :?: :?: :?: :?: :?: :?: :?: :?: :?:
2.0hdi lx 51 plate 90bhp chassis no.VF38BRHYF81371125
rufio
1.6 8v
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Re: heater plug light gone out

Post by rufio »

I noticed this on my car recently also, (2003 HDI 90) It came on for a brief second when i first bought the car but has stopped coming on recently, Like the OP it hasnt caused a problem yet with the warmer weather but suspect it might later on. Have a set of bosch plugs ready to go in but would rather suss this out first.

thanks
sean
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Doggy
Mod with a 2.2 HDi, De-Fapped!
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Re: heater plug light gone out

Post by Doggy »

HDi's start fine without glow plugs. The light bears no relation to whether the plugs are energised or not, it means 'don't turn the starter until I go out'.
In reality, the plugs stay on for some seconds after the engine starts to help acheive even idling quickly.

Most of just complelely ignore it
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
rufio
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Re: heater plug light gone out

Post by rufio »

Perfect....Thanks again Doggy ill hang off fitting the plugs so
briangoo
2.0 16v
Posts: 154
Joined: Fri Jan 20, 2012 7:43 pm

Re: heater plug light gone out

Post by briangoo »

Thanks for that info mine seams to go on when it wants when I fire it up lol
2.0hdi lx 51 plate 90bhp chassis no.VF38BRHYF81371125
GingerMagic
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Re: heater plug light gone out

Post by GingerMagic »

+1 Doggy, unless we reach temperatures of -15 or something, then glowplugs are not required. I believe on the majority of cars the plugs stay on for around 10 seconds after the light goes out to aid warming up.

If it bothers you the glowplug feed is a green and black box under the throttle housing should you want to change it but there really is no need.
2003 2.2hdi estate - mine
1998 Volvo 940 auto estate - also mine
2019 Citroen C3 something - the wife's
PP2000 user, can help with faults / diagnostics in the Bournemouth area.
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Captain Jack
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Re: heater plug light gone out

Post by Captain Jack »

I survived with no glow plugs several cold winters but if it's been a chilly night below about -5c then the car took a few turns to start up and even then it spluttered for a few seconds after starting. I replaced the relay (mine was visibly burnt out) this summer so we'll see what it's like in a few months time.
2003 - 2008: 1998 Peugeot 406 2.1 TD 110bhp LX Saloon
2008 - 2009: 2004 Honda Accord 2.2 CDTI 136bhp Executive Saloon
2009 - 2013: 2002 Peugeot 406 2.0 HDI 110bhp Executive Saloon
2013 - 2021: 2007 Peugeot 407 2.2 HDI 170bhp Executive Saloon (mapped to 213bhp :twisted:)
2021 - ????: 2016 Ford Mondeo 2.0 TDCi 180bhp Titanium
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