Discovery 2 2002 high low range issue
- Thread starter Jake20
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1988smithy
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High and low...? Fuel pressure?
Goes a long way if you pop a post in here mate https://www.landyzone.co.uk/forum/introduce-yourself.20/
Goes a long way if you pop a post in here mate https://www.landyzone.co.uk/forum/introduce-yourself.20/
That’s all been checked
the only thing they missed was the hi and low readings on the scanner are fluctuating between the two one second it’s reading high then reading low range
Hi Welcome 
Dont know (but would suspect similar) there are different engine maps for Hi/low on a p38, if it’s flicking between the 2 maybe it’s causing your issue.
so I guess first port of call would be the actual switch then the wiring to it.
Auto or manual?
J
Oh and please add the “range” to your Fred title cos it don’t really tell us much without it.
Dont know (but would suspect similar) there are different engine maps for Hi/low on a p38, if it’s flicking between the 2 maybe it’s causing your issue.
so I guess first port of call would be the actual switch then the wiring to it.
Auto or manual?
J
Oh and please add the “range” to your Fred title cos it don’t really tell us much without it.
ManualHi Welcome
Dont know (but would suspect similar) there are different engine maps for Hi/low on a p38, if it’s flicking between the 2 maybe it’s causing your issue.
so I guess first port of call would be the actual switch then the wiring to it.
Auto or manual?
J
got under the car today and the switch has been unplugged
problem is the wiring to it has gone
this must have been done when the garage done the gearbox repair
it was there before
See all this info that comes out.
I would say the plug is there somewhere, but as they were messing with the gearbox it’s been trapped somewhere on the top and not dangling in view.
suggest you take it back and ask them to find it and plug it back in
You are looking at the right switch I take it?
I don’t know the D2 at all so am sort of gut feeling it you really need someone who knows the disco.
@sierrafery will know.
J
Last edited:
sierrafery
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Hi, yes cos the ECU is mixed up and it switches the fuel maps as it's a more "rich" fuelling when low is selected, the switch is on top of the transfer box and the plug must have a red/pink wire, when earth is switched to this wire the ECU goes to the low setup so maybe that wire being cut it touches earth now and then... untill you find where it is the problem unpin or cut the red/pink wire from pin 8 of C0448 then the engine will run normally like on high input...be aware that the scanner will show hi when low is selected and vice-versa as it's about earth input strenght not about the gear selection, it's a known glich nothing to do about that
Thank you so much have just done what u suggested and after 8 weeks and 800 pound bill which didn’t even fix the problem and telling me to scrap it
she is now running sweet as a nut
I’m so happy
thank you again
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Pardon my usual ignorance, but could this be the dreaded P clip problem?
PopPops
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Don’t think so, it’s a manual, but I wait to be corrected!
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It's just that @sierrafery mentioned a wire that was on top of the transfer box and that is where the P clip is, unless it isn't, on a manual, if you see what I mean.
So often on the forum there have been indecipherable problems which eventually were resolved when some one removed it and examined the worn insulation inside the outer insulation under the P clip.
sierrafery
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I excuse your ignorance cos i have to reveal mine in this particular case which means that i have no f00ckin ideea
sierrafery
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- Arad/Romania
Welcome but you'll still have to find that wire and connect it properly to the switch or rewire the circuit otherwise when you'll select low it will have no guts for that gearing being underfuelled
