Rang Jaguar assist this morning, 20 mins AA turned up, auxiliary radiator leaking, told to ring dealer Tuesday for to hopefully get it done under warranty, is it a known issue, 38000miles on the clock. Hope it’s not a 3 month wait for a replacement as if it goes completely and loses all coolant then surely the engine would be fried.
Wedds
Joined
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331 Posts
Could be auxiliary radiator leak, or the notorious crossover pipe on the V6 engines.
Probably should mention the above TSB just in case it hasn't been updated yet.
JLRTB02027NAS3
Technical Service bulletin
28 NOV 2022
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331 Posts
"Well the 3.0D at least the way I drive it has only ever had one active regen"
I'm not sure that's possible. Passive regeneration is extremely rare in these vehicles and active regeneration is triggered around 18 to 20hpa. Maybe you mean forced regeneration?
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331 Posts
You have in fact read it incorrectly...
Later JLR engineering paper releases explain it in depth.
passive regeneration is not possible on transverse mount engines, and some vehicles were the DPF is moved to far back under the vehicle. JLR engineering data shows transverse mount vehicles cannot passively regenerate at all and in-line mounted engines (F-Pace) only passively reduce a percentage of the soot per mile at higher speed very long distances. (has also stated in the article you were quoting above)
passive regeneration: reduces a small amount of continuous soot buildup during continuous driving at temperature.
The buildup is still continuous and this does not clean the DPF to regenerated levels.
Active regeneration: regeneration during drive cycles when soot buildup reaches a specific level and requires post injection fuel while driving the vehicle at temperature.
forced regeneration: using a bi-directional scan tool to turn the regeneration on manually and still requires Post fuel injection to regenerate.
you go through a lot of regeneration cycles with post-injection with no indication that any of it is actually happening at the time. that is how soot buildup in the oil and fuel dilution happen.
Later JLR engineering paper releases explain it in depth.
passive regeneration is not possible on transverse mount engines, and some vehicles were the DPF is moved to far back under the vehicle. JLR engineering data shows transverse mount vehicles cannot passively regenerate at all and in-line mounted engines (F-Pace) only passively reduce a percentage of the soot per mile at higher speed very long distances. (has also stated in the article you were quoting above)
passive regeneration: reduces a small amount of continuous soot buildup during continuous driving at temperature.
The buildup is still continuous and this does not clean the DPF to regenerated levels.
Active regeneration: regeneration during drive cycles when soot buildup reaches a specific level and requires post injection fuel while driving the vehicle at temperature.
forced regeneration: using a bi-directional scan tool to turn the regeneration on manually and still requires Post fuel injection to regenerate.
you go through a lot of regeneration cycles with post-injection with no indication that any of it is actually happening at the time. that is how soot buildup in the oil and fuel dilution happen.
Joined
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331 Posts
not sure what your point is...
there is no such thing as a DPF in any vehicle in manufacture that doesn't use active regeneration, because passive will not clean the DPF when it reaches capacity. every system uses post injection fuel or a vaporizer. there is no other way to regenerate a DPF.
there is no such thing as a DPF in any vehicle in manufacture that doesn't use active regeneration, because passive will not clean the DPF when it reaches capacity. every system uses post injection fuel or a vaporizer. there is no other way to regenerate a DPF.
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