Jason B
Member
Hey Guys!!!
I have a ZX200LC Hitachi that is driving me crazy. The engine RPM was not correct when the customer brought it to me. High Idle was 2400 and low Idle was 1500. I adjusted the high idle stop to bring rpm down to 2250 and then attempted the EC motor calibration. Every time I calibrate I end up with a different result. Sometimes it goes straight to high idle and then won't shut off with the key. Sometimes its at 900 rpm idle but then won't rev above 1100. This is just repeating the calibration, not adjusting anything manually.
I have DR.ZX on palm pilot and have been watching the readings. The dial voltage is perfect from 0.6 volts at idle to 4.5 volts at full throttle consistently when turning. The EC motor position voltage is getting a reading and shows 2.6 volts at idle and 3.1 volts at full throttle when I luck out and happen to get full throttle. I just cannot get a good calibration to stick. If I get a calibration where I get full throttle, then low idle is way too high. I cannot achieve a calibration where i get a good enough range of RPM to hit low and high idle properly. The throttle cable is in the furthest hole out on the lever. Any ideas would be great. Going to go after the throttle cable right now and verify that it isn't causing it by being sticky or stretched.
I have a ZX200LC Hitachi that is driving me crazy. The engine RPM was not correct when the customer brought it to me. High Idle was 2400 and low Idle was 1500. I adjusted the high idle stop to bring rpm down to 2250 and then attempted the EC motor calibration. Every time I calibrate I end up with a different result. Sometimes it goes straight to high idle and then won't shut off with the key. Sometimes its at 900 rpm idle but then won't rev above 1100. This is just repeating the calibration, not adjusting anything manually.
I have DR.ZX on palm pilot and have been watching the readings. The dial voltage is perfect from 0.6 volts at idle to 4.5 volts at full throttle consistently when turning. The EC motor position voltage is getting a reading and shows 2.6 volts at idle and 3.1 volts at full throttle when I luck out and happen to get full throttle. I just cannot get a good calibration to stick. If I get a calibration where I get full throttle, then low idle is way too high. I cannot achieve a calibration where i get a good enough range of RPM to hit low and high idle properly. The throttle cable is in the furthest hole out on the lever. Any ideas would be great. Going to go after the throttle cable right now and verify that it isn't causing it by being sticky or stretched.
