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LR4 / D4 - Intermittent failure, multiple codes thrown

- - - - - LR4 D4 Discovery electrical error code performance cruise control parking brake

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58 replies to this topic

#41
DHappel

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Yes, it physically fits because the 3/4 share the same body.  But the engines, and more importantly the intake system, are totally different.  This is why nobody has marketed a snorkel kit of the 4.  I still think you'd have to design a cross-over so both sides would be fed by the snorkel but I don't think there's the room to make it breath correctly without doing some serious mods.

 

(look, I didn't write this on my phone so it actually reads like I wanted it to!)


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Don
'07 LR3 HSE/HD - slightly non-stock

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#42
AlysonH

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Does it make sense to fabricate a crossover or just rock dual snorkels?
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#43
DHappel

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Nobody that I know makes a snorkel to fit the other side.  You'd need a mirror image of what she has now.

 

We could look into building a crossover of some type.  I'm sure it can be done, it's just a question of cost.


Don
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#44
GraemeWare

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Nobody that I know makes a snorkel to fit the other side.  You'd need a mirror image of what she has now.

 

We could look into building a crossover of some type.  I'm sure it can be done, it's just a question of cost.

 

Don,

 

Which side is it currently on?

 

Graeme


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1990 Range Rover Classic - LT230 Transfer box, Warn winch, 2" lift, 235/85-16 Dunlop MUD Rovers, "Blue Submarine"
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#45
Rum_Ham

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Does it make sense to fabricate a crossover or just rock dual snorkels?

 

I like this idea! 

 

Call me crazy, but kydex maybe your friend. It is pretty easy to work with and fairly inexpensive. With a little patience and effort you could make a crossover pipe or a snorkel for the driver side. 


Dave

 

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#46
DHappel

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Don,

 

Which side is it currently on?

 

Graeme

The passenger side.  

(at least on a 'murican rig)


Don
'07 LR3 HSE/HD - slightly non-stock

'96 D1 - even more non-stock


#47
erinw.rrc

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So as far as I know, no one makes a LH side snorkel... besides even if they did, I'd want it want it to match.  With the snorkel turned around it's been running better, although I did get the faults last night because it was windy.  Hypothesis is it's happening during deceleration.  I have to come up with something because I can't keep driving it with the faults.  It requires me to stop, turn of the engine and restart in order to keep driving, otherwise the engine will stall and I just flood it when I hit the acceleration pedal. 


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#48
Rum_Ham

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So as far as I know, no one makes a LH side snorkel... besides even if they did, I'd want it want it to match.  With the snorkel turned around it's been running better, although I did get the faults last night because it was windy.  Hypothesis is it's happening during deceleration.  I have to come up with something because I can't keep driving it with the faults.  It requires me to stop, turn of the engine and restart in order to keep driving, otherwise the engine will stall and I just flood it when I hit the acceleration pedal. 

 

You might consider inserting a secondary filter element somewhere in the snorkel. Restricting the air flow a little bit may solve your problem. The HKS style filters can be had for next to nothing. They are dry filters so no worries of the oily mess for your MAF sensor. Who knows, it may even work.

 

http://www.ebay.com/...s&ul_noapp=true


Dave

 

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#49
Gotrovr

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Is it possible to remove the snorkel temporarily and return to factory air intake system and test for the same faults?


Will

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#50
erinw.rrc

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Is it possible to remove the snorkel temporarily and return to factory air intake system and test for the same faults?

 

Possibly.  I wonder if I'd have to change everything back, or if I can just take the snorkel off and put the side vent back on to test?


Erin W.
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#51
Gotrovr

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keep it simple, just remove the lower portion of the snorkel and reinstall the OEM vent


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Will

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Building a life journey one puzzle piece at a time

 


#52
Gotrovr

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I am curious here.  If mass flow related fault using snorkel, could this be related to design flow required for 4.4 liter vs increase required for 5.0 liter 


Will

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#53
DHappel

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I am curious here.  If mass flow related fault using snorkel, could this be related to design flow required for 4.4 liter vs increase required for 5.0 liter 

The current working theory is that the computers are freaking out over one MAF reading way different than the other.  I don't think a small restriction from the snorkel is itself causing a problem though it could result in a minor drop in performance/mpg if it's enough of a restriction.  

 

I like the idea of just removing the exterior part of the snorkel and snapping the vent back in as a temporary test.


Don
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#54
DiscoDavis

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could you in theory remove one MAF and then rig the remaining one to send two signals, one for each wiring plug? That way you could force the system to accept two identical readings, whatever they might be. 

 

I never ever experienced an air flow issue with my old snorkel. 


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#55
Gotrovr

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thought this youtube video might be helpful

 


Will

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'16 LR4 HSE  "Perseus"

Building a life journey one puzzle piece at a time

 


#56
erinw.rrc

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UPDATE:  Removed the snorkel and returned the truck back to factory spec.  Safari confirmed it won't work with a NAS D4, ARB has updated their website and I had my truck fixed.  If you're thinking about putting a snorkel on your D4, don't.  Over and out.


Erin W.
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#57
DHappel

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So you got a new fender?  That sucks!


Don
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#58
erinw.rrc

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So you got a new fender?  That sucks!

 

Yes.  Fortunately for me, ARB was very understanding, discussed a possible fix with Safari in Australia, and when one couldn't be found, they made things right.


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Erin W.
"Jack Sparrow" 2012 Ipanema Sand LR4 HSE LUX; 18" LR3 Wheels, Johnson Rods, 30mm spacers, LT275/65R18 Cooper Discoverer A/T3, Baja Rack, Custom rear Kaymar bumper, factory Warn Winch kit for LR4, factory brush guard, Iron Man rear light, Hi-lift jack (recently mounted :D)
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#59
DHappel

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Yes.  Fortunately for me, ARB was very understanding, discussed a possible fix with Safari in Australia, and when one couldn't be found, they made things right.

Well that's a win then!


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Don
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Also tagged with one or more of these keywords: LR4, D4, Discovery, electrical, error code, performance, cruise control, parking brake

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