No idle
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No idle
For some reason my MY97 STi won't idle. I've swapped the idle control valve complete and still it won't. It idles when cold, but as soon as it warms up it drops out.
Apexi ecu commander shows open O on ICS and 0.57v on throttle position, is this correct? Thinking that the control valve isn't getting a signal to operate if the tps doesn't tell it to?
Checked ohms of old and new solenoids and both give the same readings across any pair of pins.
Apexi ecu commander shows open O on ICS and 0.57v on throttle position, is this correct? Thinking that the control valve isn't getting a signal to operate if the tps doesn't tell it to?
Checked ohms of old and new solenoids and both give the same readings across any pair of pins.
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Hi Gerry, my car 97 uk has begun to have idle issues, I adjusted the ICV, it idles ok when warm, but is poor when cold with a reluctant fast idle(choke). My car from memory had 0.47v on tps. I would be interested to see if you manage to cure yours before I do mine.
Andy
Andy
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Is your commander giving the correct water temp reading? Could be a dead water temp sender
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I cant remember if there are three wires or two going to the ICV. iI it's 2 wires then the voltage will pulse rapidly between 0volts and what ever it needs to control idle upto supply line 5v or 12volts. If it's 3 wires then the voltage should swing postively and negatively to control idle. Time to dig out my oscilloscope and see whats happening.
Andy
Andy
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I cant remember if there are three wires or two going to the ICV. iI it's 2 wires then the voltage will pulse rapidly between 0volts and what ever it needs to control idle upto supply line 5v or 12volts. If it's 3 wires then the voltage should swing postively and negatively to control idle. Time to dig out my oscilloscope and see whats happening.
Andy
Andy
Jay, Water temp on commander is as you'd expect, gradually rises with engine warm up.
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Idle is now back where it should be
It turned out to be the connector to the 02 sensor. I guess that the heavy rain of late has found it's way into the connector and caused a poor connection. Gave it all a liberal spray of WD40 and it now idles sweet as a nut.
Odd that it coincided with my trip into the tyres a couple of weeks back
It turned out to be the connector to the 02 sensor. I guess that the heavy rain of late has found it's way into the connector and caused a poor connection. Gave it all a liberal spray of WD40 and it now idles sweet as a nut.
Odd that it coincided with my trip into the tyres a couple of weeks back
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