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Mal Kapadia

Do glow plugs affect DPF regeneration?

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Hi guys,

 

I got a Carly OBD adapter and app the other day as my DPF warning came on. It shows the 480A and 481A errors.

 

It's also showing 3 glow plugs out.

 

Also, Throttle Actuator code 004687 and 00483D.

 

They all reappear after being cleared.

 

Are any of these likely to be responsible for not allowing the DPF regeneration to run? I've got some Forte DPF cleaner coming soon so will try a few tanks on that and then force a regeneration again.

 

The Carly is very slow to check for error codes, so I've also ordered a C110 scanner as I believe this will show the faults "live" and allow me to clear them right away, hopefully allowing a DPF regeneration to run?

 

My engine temp tends to sit between 79 and about 85 C, is this ok?

 

Thanks for any tips and advice!

 

Mal 

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I’ve had 2 glows plugs (4&6) out for couple of years and mine regens fine.

 

Your temps ain’t looking the best and it seems as your stats are on it way out.

 

I vaguely remember they need to be at a constant of 85+ to make sure regens, but could be slightly lower as I’m sure someone will be able to confirm.

 

I’ve had to change the stats twice in my 6.5 years of ownership.

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Thanks guys.

 

I've also read that the two errors to do with the throttle actuator would stop DPF regen happening.

 

I guess I'll need to speak to local indy specialist to ask for a cost for replacing the throttle actuator and 3 glow plugs.

 

Thanks,

Mal 

 

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It would be a good time for a major service, both thermostats and the throttle body will need swapping to allow a regen, as you have an auto box you might have a gearbox heat exchanger that has a 3rd thermostat and was the problem on my car, whilst it will regen with half the glow plugs down it isn't ideal. If you haven't blanked the swirl flaps it is a good time to do it as the kit comes with new inlet manifold seals. You HAVE to remove the plugs with the engine up to temp or you have a high risk of snapping a plug, you should also use a torque wrench that allows left and right hand torque (not your shitty £30 special) as you need to set a 30nm value to remove them as I think 32nm is the breaking point (I use 25nm and upped the last to 30 as it didn't want to move)

Tightening value is 13nm

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