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Showing results for tags 'Intermittent miss'.
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Mostly occurs under very light throttle/cruise while going over bumps. The car will miss for a split second (AFR's go rich) and then pick right back up. I pulled datalogs and the guys at DIY said that I have a 'sync loss' condition. This has also happened a couple times under full boost - so it's not relegated to just light throttle/bumps - it's happened during a bunch of different conditions - but MOSTLY light throttle going over bumps. I have the 83 turbo dizzy with their (DIY) Hall effect wheel in it. No shaft play in the dizzy that I could feel - car only has 2200 miles on it now. Put in a new dizzy pickup/sensor as well. This is a 78 S30 turbo BTW... Just replaced the relay board - thought it may have been a bad fuse holder - that didn't help. Anyone ever encounter this? The DIY folks said I need to put an oscilloscope on it. Doubt I would even know how to hook one up - much less what to look for in the data. Curious if this has happened to anyone, and if so - what you did to fix it.
