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william crosby

New Member

• Jul 29, 2008

• #1

hi any one know where the rpm signal wire is on a 2002 4.4 v8 range rover i think its connected to the ecu in the engine bay

 

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Mtechuk

New Member

• Jul 29, 2008

• #2

The Rpm is worked out by the Engine ecu and then transmitted over the can network to the instrument cluster, transmission ect.
Have you got a fault or are you playing with LPG

 

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william crosby

New Member

• Jul 29, 2008

• #3

Mtechuk said:

The Rpm is worked out by the Engine ecu and then transmitted over the can network to the instrument cluster, transmission ect.
Have you got a fault or are you playing with LPG

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yes its for a lpg conversion can you help thanks for reply

 

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Mtechuk

New Member

• Jul 29, 2008

• #4

What kit are you fitting because you can normally take a feed off the trigger side of a coil and then use the settings in the gas software to tell it what rpm source you are using.

 

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william crosby

New Member

• Jul 29, 2008

• #5

Mtechuk said:

What kit are you fitting because you can normally take a feed off the trigger side of a coil and then use the settings in the gas software to tell it what rpm source you are using.

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hi cheers i have fitted a dream 21 kit i have the coil trigger wire but i have been told that this can cut off some times thats why i would rather fit direct to ecu thanks

 

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Mtechuk

New Member

• Jul 30, 2008

• #6

They are telling pork pies. It only cuts the injectors on over run not the coils. The coil connection works perfect. With your dream kit you dont need a multiplier either the software does it for you.

 

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william crosby

New Member

• Jul 30, 2008

• #7

Mtechuk said:

They are telling pork pies. It only cuts the injectors on over run not the coils. The coil connection works perfect. With your dream kit you dont need a multiplier either the software does it for you.

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thanks for that information have you fitted them to the coil wires do you know which one you connected to as i have found the white wire gives rpm signal but again been told the white is 12v

 

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Mtechuk

New Member

• Jul 30, 2008

• #8

That’s right the white wires are the trigger wires from coil 1 and coil 5 both on pin 1 of each coil. You can use either. When probed with a voltmeter they will show 12 volts but if you switch to Hertz or Rmp you will then get a sensible trigger reading.

 

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william crosby

New Member

• Jul 31, 2008

• #9

Mtechuk said:

That’s right the white wires are the trigger wires from coil 1 and coil 5 both on pin 1 of each coil. You can use either. When probed with a voltmeter they will show 12 volts but if you switch to Hertz or Rmp you will then get a sensible trigger reading.

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thanks again

 

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Mtechuk

New Member

• Jul 31, 2008

• #10

No problem at all. Hope it all goes smooth for you.