#16: Re: 1.4 HDI fault....the last thing i need this year! Author: Abzynthe, Posted: Fri Dec 30, 2011 4:28 pm ---- Id dont know if its the same, but on a 1.4 petrol, it was doing similar and the fault was the temp sensors on the inlet manifold and somewhere else werent communicating properly causing the engine to run rich?
#17: Re: 1.4 HDI fault....the last thing i need this year! Author: ma.langan, Location: Leyland, LancashirePosted: Fri Dec 30, 2011 5:12 pm ---- Why does it reduce life of turbo though?
#18: Re: 1.4 HDI fault....the last thing i need this year! Author: propaintballa, Location: Weymouth/Leamington SpaPosted: Fri Dec 30, 2011 5:15 pm ----
ma.langan wrote:
Why does it reduce life of turbo though?
I really don't think it does. I've read A LOT about EGR's and i've not heard anyone come up with that before :/
But can we try and help us poor people that have broken cars! When i last took my car out this evening, it was fine, so i have no idea what's going on :/
#19: Re: 1.4 HDI fault....the last thing i need this year! Author: Walberino, Location: BuckinghamPosted: Fri Dec 30, 2011 6:02 pm ---- Apparently the recirculation of the exhaust gasses through the engine create lower combustion temperatures, therefore if you block the EGR from recirculating the gasses the combustion temperatures will be higher and therefore the turbo will operate at a higher temperature and fail quicker due to the constant high operating temperature.
#20: Re: 1.4 HDI fault....the last thing i need this year! Author: Walberino, Location: BuckinghamPosted: Fri Dec 30, 2011 6:03 pm ----
Abzynthe wrote:
Id dont know if its the same, but on a 1.4 petrol, it was doing similar and the fault was the temp sensors on the inlet manifold and somewhere else werent communicating properly causing the engine to run rich?
So how did you fix this? Just change both of the sensors??
#21: Re: 1.4 HDI fault....the last thing i need this year! Author: propaintballa, Location: Weymouth/Leamington SpaPosted: Fri Dec 30, 2011 6:11 pm ----
Walberino wrote:
Apparently the recirculation of the exhaust gasses through the engine create lower combustion temperatures, therefore if you block the EGR from recirculating the gasses the combustion temperatures will be higher and therefore the turbo will operate at a higher temperature and fail quicker due to the constant high operating temperature.
Pretty sure that having slightly cooled exhaust gas passing through the cold side of the turbo would be more detrimental to your turbo/performance than having slightly higher temps on the hot side…
The way i see it anyway
#22: Re: 1.4 HDI fault....the last thing i need this year! Author: Walberino, Location: BuckinghamPosted: Fri Dec 30, 2011 6:42 pm ----
propaintballa wrote:
Walberino wrote:
Apparently the recirculation of the exhaust gasses through the engine create lower combustion temperatures, therefore if you block the EGR from recirculating the gasses the combustion temperatures will be higher and therefore the turbo will operate at a higher temperature and fail quicker due to the constant high operating temperature.
Pretty sure that having slightly cooled exhaust gas passing through the cold side of the turbo would be more detrimental to your turbo/performance than having slightly higher temps on the hot side…
The way i see it anyway
You may well be right buddy, thats just what i've heard, i'm certainly no expert on the matter
#23: Re: 1.4 HDI fault....the last thing i need this year! Author: propaintballa, Location: Weymouth/Leamington SpaPosted: Fri Dec 30, 2011 6:49 pm ----
Walberino wrote:
propaintballa wrote:
Walberino wrote:
Apparently the recirculation of the exhaust gasses through the engine create lower combustion temperatures, therefore if you block the EGR from recirculating the gasses the combustion temperatures will be higher and therefore the turbo will operate at a higher temperature and fail quicker due to the constant high operating temperature.
Pretty sure that having slightly cooled exhaust gas passing through the cold side of the turbo would be more detrimental to your turbo/performance than having slightly higher temps on the hot side…
The way i see it anyway
You may well be right buddy, thats just what i've heard, i'm certainly no expert on the matter
Ahhh fair enough!
Either way, I don't think this is an EGR fault, however, i'll unplug mine tomorrow and see if it makes a difference!
#24: Re: 1.4 HDI fault....the last thing i need this year! Author: Rob2859, Location: HalifaxPosted: Fri Dec 30, 2011 6:52 pm ----
Walberino wrote:
propaintballa wrote:
Walberino wrote:
Apparently the recirculation of the exhaust gasses through the engine create lower combustion temperatures, therefore if you block the EGR from recirculating the gasses the combustion temperatures will be higher and therefore the turbo will operate at a higher temperature and fail quicker due to the constant high operating temperature.
Pretty sure that having slightly cooled exhaust gas passing through the cold side of the turbo would be more detrimental to your turbo/performance than having slightly higher temps on the hot side…
The way i see it anyway
You may well be right buddy, thats just what i've heard, i'm certainly no expert on the matter
I would have thought something like water wet or whatever its called would compensate for the higher temperature. Worth it for the extra power if the mileage is not too high.
#25: Re: 1.4 HDI fault....the last thing i need this year! Author: Abzynthe, Posted: Sat Dec 31, 2011 1:26 am ----
Walberino wrote:
Abzynthe wrote:
Id dont know if its the same, but on a 1.4 petrol, it was doing similar and the fault was the temp sensors on the inlet manifold and somewhere else werent communicating properly causing the engine to run rich?
So how did you fix this? Just change both of the sensors??
Yeah changing both the sensors fixed the problem.
#26: Re: 1.4 HDI fault....the last thing i need this year! Author: MrBSI, Location: What's it to you? ? ?Posted: Sat Dec 31, 2011 4:30 am ----
Walberino wrote:
Apparently the recirculation of the exhaust gasses through the engine create lower combustion temperatures, therefore if you block the EGR from recirculating the gasses the combustion temperatures will be higher and therefore the turbo will operate at a higher temperature and fail quicker due to the constant high operating temperature.
Correct
At last, someone who understands one of the functions of the EGR valve on a turbo diesel
#27: Re: 1.4 HDI fault....the last thing i need this year! Author: Royster, Location: belfastPosted: Sun Jan 01, 2012 5:57 am ---- Hi guys,
So the brother in law took the car and changed the fuel filter which was completely full of sludge, said he took it out for a run and everything was fine.... Until the 33 mile when it did the same thing and stranded him .
I'll tell him about the sensors and see what he says.
Cheers so far guys.
#28: Re: 1.4 HDI fault....the last thing i need this year! Author: Royster, Location: belfastPosted: Sun Jan 01, 2012 6:04 am ---- I just reread propaintbellas post about the injectors ticking, Claire's car was doing the same when she started it on boxing day.
Could I have injector/sensor fault ?
#29: Re: 1.4 HDI fault....the last thing i need this year! Author: propaintballa, Location: Weymouth/Leamington SpaPosted: Sun Jan 01, 2012 6:26 am ----
Royster wrote:
I just reread propaintbellas post about the injectors ticking, Claire's car was doing the same when she started it on boxing day.
Could I have injector/sensor fault ?
I can only really hear mine when it's under load, between like 1.5 and 3k rpm…
#30: Re: 1.4 HDI fault....the last thing i need this year! Author: cosmicdance, Location: Leeds, UKPosted: Thu Jan 05, 2012 11:58 am ---- |I also have a 1.4 HDI and it was cutting out similar to yours.
It turned out to be the crankshaft sensor and once I got that replaced, which was very cheap, it has been fine ever since.
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