Which of these is my coolant temp sensor for the ECU?
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15 March 2008, 08:15 PM
#8
Cheers for the info guys. I am replacing mine soon and just wanted to know which one it is.
FAO Simon,
Ok, carrying on from this, I was going to use a resistor to fool the ECU into thinking that it was running a coolant temp of 60-70c but have since remembered that I can change the water temp correction via datalogit. If I use the resistor I can switch it in and out, but if I alter the PFC settings I can't unless the laptop is connected.
What would be the effect of having a value of 1 in ALL of the boxes above 10c? Would the car still run or would it stall (using petrol).
The reason I ask is this. I can start the car on LPG and as long as I don't go daft the vaporiser doesn't freeze and the runs ok, although using the PFC's enrichment its a little rich. It doesn't need the enrichment on gas and is simply using more gas than is needed. So it's an economy thing really.
Any thoughts?
Wayne.
FAO Simon,
Ok, carrying on from this, I was going to use a resistor to fool the ECU into thinking that it was running a coolant temp of 60-70c but have since remembered that I can change the water temp correction via datalogit. If I use the resistor I can switch it in and out, but if I alter the PFC settings I can't unless the laptop is connected.
What would be the effect of having a value of 1 in ALL of the boxes above 10c? Would the car still run or would it stall (using petrol).
The reason I ask is this. I can start the car on LPG and as long as I don't go daft the vaporiser doesn't freeze and the runs ok, although using the PFC's enrichment its a little rich. It doesn't need the enrichment on gas and is simply using more gas than is needed. So it's an economy thing really.
Any thoughts?
Wayne.
15 March 2008, 11:45 PM
#12
Yes, exactly that. The gas ecu simply mirrors the injection signals from the PFC and adapts the signal to provide the equivalent gas injection times. So by shutting off the water temp correction the gas ecu follows suit.
Many of the LPG users I have spoken to do the resistor trick to save some petrol on cold starts. It also has the added benifit of reducing the wear associated with petrol enrichment.
Wayne.
Many of the LPG users I have spoken to do the resistor trick to save some petrol on cold starts. It also has the added benifit of reducing the wear associated with petrol enrichment.
Wayne.
16 March 2008, 12:25 AM
#15
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you can probably get away with leaner on cold start except the idle.. the idle is usually the pain..
if you are intending running lpg 99% of the time.. you could just add a couple of % to the injectors until warmed up if you had to use petrol on a cold start when out of lpg?
Simon
if you are intending running lpg 99% of the time.. you could just add a couple of % to the injectors until warmed up if you had to use petrol on a cold start when out of lpg?
Simon
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