aceofhearts
Active Member
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- 64
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- Biggleswade
What is the idle speed supposed to be on a 12j? Tried looking online with no luck.
Currently it sits at 620rpm
Currently it sits at 620rpm
idle speed
- Thread starter aceofhearts
- Start date
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discool
Well-Known Member
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- 13,482
As slow as possible, as fast as necessary 
Turboman
Mab An Gov
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- Lathrowda, Kernow
Just out of interest, how do you know?
I would say that is a bit too slow, think about 800 rpm would be as standard.
A low or falling idle speed is often a sign of a tired injector pump.
zeaphod
Well-Known Member
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- 3,103
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- Belfast, Norn Iron
According to Haynes, it's 650 + or - 20. I've set mine a bit higher to eliminate bonnet vibration when cold.
Flossie
Well-Known Member
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- 10,612
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- Shropshire
I set mine at 4k when I couldn't afford to replace a bust throttle cable .
Richard Seddon
Member
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- 28
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- Ash Vale
Discool's answer, "As slow aspossible, as fast asnecessary" needs a little explanation.
"As slow aspossible", so a warm engine doesn't stall or become lumpy on tickover. That's applicable to all cars.
Where things are different on the Landy is in how fast is "as fast asnecessary". In 1st High, the engine tickover of the 2.5 N/A Diesel should creep the truck forward with your feet off the pedals. A slow forward creep, on flat ground, just enough so it won't if on an un-mettled road, is what my REME trained dad says.
Alternatively, you could fit a hand throttle, so you can 'tune' the tickover to allow you to creep when off roading or when you want slow creeping capability, and just set to "As slow aspossible", so it doesn't stall in normal road use.
Rick
"As slow aspossible", so a warm engine doesn't stall or become lumpy on tickover. That's applicable to all cars.
Where things are different on the Landy is in how fast is "as fast asnecessary". In 1st High, the engine tickover of the 2.5 N/A Diesel should creep the truck forward with your feet off the pedals. A slow forward creep, on flat ground, just enough so it won't if on an un-mettled road, is what my REME trained dad says.
Alternatively, you could fit a hand throttle, so you can 'tune' the tickover to allow you to creep when off roading or when you want slow creeping capability, and just set to "As slow aspossible", so it doesn't stall in normal road use.
Rick
