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| Futura_XR |
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has anyone done this so that u can turn it on for wen u start the car and then turn it off once its warmed up? how would u go about whihc wire to put the switch on?
_________________ Past: 150rwkw 5spd EF Futura - 4499's, 2.5" exh, Intake, Filter, Wade 1636, Head and Valve Work, Raised Comp.
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| uglybob |
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pretty sure voxace has done it - maybe shoot him a PM and he'll be able to point you in the right direction
_________________ R.I.P. Scotty |
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| Disco Frank |
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would be easy but why?
isc=idle speed controller... it is there to help with the cars idle
_________________ RIP SCOTT |
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| justfordima |
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they tend to make the car linger with revs instead of dropping down after revving, or inbetween gears sometimes. I would recommend putting it on a thermo switch or something... save you the hassle.
Cheers
_________________ ;++JustForDimSim++;
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| ebman40 |
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Futura_XR wrote: has anyone done this so that u can turn it on for wen u start the car and then turn it off once its warmed up? how would u go about whihc wire to put the switch on? I have done this and it works quite well, my suggestion is find the 2 wires going to the ISC there should a red which is ingnition sourced and a wire which is controlled by the ecu, this is the wire that u must trace at the ecu and cut it about 50mm back from ecu then solder a wires to each of the cut wires and run to switch
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| tomcolahan |
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Dont forget that when the ISC has no power (ie is disconnected or switched off) an error code is logged with the ECU..
_________________ We'll keep our cow s**t in the country, you keep your bull s**t in the city. |
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| fordgt290 |
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wouldnt the signal wire from the ecu be a voltage from 0 to 5 volts not just on off. i cant see why u would want to put it on a switch.
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| justfordima |
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justfordima wrote: they tend to make the car linger with revs instead of dropping down after revving, or inbetween gears sometimes. I would recommend putting it on a thermo switch or something... save you the hassle.
Cheers as above.. it only happens sometimes... sometimes it helps cleaning them, but other times, the ECU decides that it needs the extra revs. Cheers
_________________ ;++JustForDimSim++;
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| falconea |
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The signal to the ISC is pulsed so that it can vary the amount of time the valve is open and so control the rpm
_________________ Drive safe, arrive alive
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| justfordima |
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.. technically it's the ground that is "pusled".
Cheers
_________________ ;++JustForDimSim++;
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
got to jaycar and get an RPM switch.
have it switch on at 1500rpm. i just leave mine unpluged all the time. Have not trouble with it at all |
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| unclewoja |
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You could get one of the old Bosch extra air valves.
They've got a disc with a whole in it and a bi-metallic strip. Just hooks up to 12V power. When the bi-metallic strip heats up, it slowly moves the disc closing off the hole and stopping air getting into the engine. It's a bit of a step backwards in technology, but it does exactally what you want. I've got a couple lying round off old Lucas L-Jetronic injection systems. |
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| unclewoja |
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tickford_6 wrote: got to jaycar and get an RPM switch.
have it switch on at 1500rpm. i just leave mine unpluged all the time. Have not trouble with it at all I find it odd that an "F1 bred" ECU can't even handle an ISC correctly. |
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| 4.9 EF Futura |
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This is quite a good idea. Probably more suited to the T5 users amoungst us.
Perhaps a simple relay on one of the ISC wires? So when switched on, relay allows EEC to control ISC as per usual. When off, relay is disconnected...
_________________ I promise..... I will never die. |
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| The_Jackal |
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i had the same prob, put in a xr computer and problem solved, revs dropped nice and quickly
_________________ EF XR8 - 5speed, Extractors & Exhaust |
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