GM dis (ecotech) question

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subie4me
Experienced MS/Extra'er
Posts: 177
Joined: Sat Jun 19, 2004 2:20 pm
Location: southern California

GM dis (ecotech) question

Post by subie4me »

I'm trying to run an eco tech with the dis setup. The motor starts and idles well, but there is no timing control from the ms. If I scope the bypass line and the timing control line, they look identical. There are pulses that have the same shape, frequency and phasing. The bypass line should just go to 5 volts after startup. I am using 24s9 code. Is there a known problem with this code and GM dis (or hei) ?
subie4me
Experienced MS/Extra'er
Posts: 177
Joined: Sat Jun 19, 2004 2:20 pm
Location: southern California

more info

Post by subie4me »

I useda two channel scope to look at the reference pulse, and the est signal. I do see a phase shift between the two. That would indicate that the timing control portion is working ok. When I scope the bypass line, It is exactly like the est line. I have scoped both est and bypass outputs right at the cpu pins , and they are identical there also. Later today,I may reflash to the latest code to see if that helps.
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