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Re: 98 Buick 3.8 Start Help
Nextxech: I agree, though I havent pressurized the cooling system Im not currently loosing any water. I have also pulled the plugs a few times to ensure that the cylinders are clear. I should at least be able to get it running enough to see that it is running badly.
Mack1:
You are correct concerning the square wave. I dont have a scope or a graphing multi meter (more or less the same) but by turning the engine by hand I am able to do it slow enough to recreate the on/off signals.
As for the harness, I thought of that and pulled the plugs for a continuity test. Thats pretty much how I figured out that the schematic colors were backwards.
I havent pulled the PCM connecters but my mystery is the 3x signal isnt headed towards it as it should be so I believe the problem occurs before that in the ignition control module.
Ill be thinking about that though.
As for the scanner: Yeah I laughed about that myself. It turns out that it came with a book listing the codes and that was his interpretation.
I looked through the codes and if I remember correctly it was 0300 "engine misfire detected"
Not very descriptive but accurate I think.
Last edited by pat mcgroin; 05-24-2009 at 09:33 AM.
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