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1995-2002 Range Rover P38A
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Discussion Starter #1
On a 1996 p38 4.0, both my temperature and fuel gauges are acting erratically, the first shows car overheating ( even the red light comes on for few seconds) as I have just started driving in a blizzard.

The fuel gauge shows 1/4 of a tank when I just filled gas, but it corrects itself later as I am driving ( luckily not the other way around and risking running out of gas).

Is this a sensor issue? Or instrument panel one?




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1995-2002 Range Rover P38A
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On a 96, you have loose connection issues most likely......
1- Check fusebox CAREFULLY for burn't connections, loose plugs on the underside, Burn't pins on underside coloured plugs. If it is the factory fusebox, it may be time for a new one

2- Bad earth connection. (Most likely) Get RAVE, find locations for earth points and remove, clean, and tighten ALL of them. The AC issue is a bit of a pointer for that one,

Beyond that, there are any number of plugs that could be causing issues, but start with the 2 above.
 

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1995-2002 Range Rover P38A
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1970-1995 Range Rover Classic
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Do as Bolt says... if that doesn't help check this
another favourite is the plug under the expansion tank, various lines for the sensors are in there.
your tank could be simply a loose connector on top of the tank
 

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1995-2002 Range Rover P38A
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64 Posts
Discussion Starter #6
Do as Bolt says... if that doesn't help check this
another favourite is the plug under the expansion tank, various lines for the sensors are in there.
your tank could be simply a loose connector on top of the tank
I have done that already.


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1995-2002 Range Rover P38A
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Discussion Starter #7
On a 96, you have loose connection issues most likely......
1- Check fusebox CAREFULLY for burn't connections, loose plugs on the underside, Burn't pins on underside coloured plugs. If it is the factory fusebox, it may be time for a new one

2- Bad earth connection. (Most likely) Get RAVE, find locations for earth points and remove, clean, and tighten ALL of them. The AC issue is a bit of a pointer for that one,

Beyond that, there are any number of plugs that could be causing issues, but start with the 2 above.
Did that too, no luck.


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Registered
1995-2002 Range Rover P38A
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64 Posts
Discussion Starter #8
On a 96, you have loose connection issues most likely......
1- Check fusebox CAREFULLY for burn't connections, loose plugs on the underside, Burn't pins on underside coloured plugs. If it is the factory fusebox, it may be time for a new one

2- Bad earth connection. (Most likely) Get RAVE, find locations for earth points and remove, clean, and tighten ALL of them. The AC issue is a bit of a pointer for that one,

Beyond that, there are any number of plugs that could be causing issues, but start with the 2 above.
Choice 2 did the trick after a thorough inspection, the only earth photographed on RAVE that I couldn’t find, was the one on the LH of the engine ( the photo looked alien in direct comparison to my engine 96 SE 4.0), but I am glad it was not the source.


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1995-2002 Range Rover P38A
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Glad that is sorted!
Which of the many earth points do you believe was the culprit?
 

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1995-2002 Range Rover P38A
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Discussion Starter #10
Thank you Bolt for the follow up.

I am suspecting the thick metal wire between the engine block and the chassis with an earth point on either end ( black one in photo) tons of road grime and dirt baked on, due to mixing with engine oil ( I have a slow oil leak).

The fuel gauge is still acting up though, so I am suspecting a sensor issue, thoughts?


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