Kirkster Posted July 8, 2014 Share Posted July 8, 2014 Well I have it up and "running" finally. Besides the spider in fuel line that clogged my original filter (which was also too fine) I remedied that with a 100 micron filter with a removable element and the need to figure out the IAC valve things are going pretty good My only other issues is that my Optical Dizzy seems to be cutting out. I get signal and it works ok for a while but then it just drops the signal then comes back on a bit later... Here is a composite log. https://dl.dropboxusercontent.com/u/100607326/2014-07-07_16.36.50.csv I am not currently running any noise filtering in my MS3Pro. The guy I am going to be taking it to for tuning wants me to verify that it is working correctly, and wants me to put a scope on it. Of course I don't have a scope and would not know what to do with one if I did... Any Ideas guys? Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 8, 2014 Share Posted July 8, 2014 By "Optical Dizzy" do you mean the CAS in a 280ZX turbo distributor? How long is "a while" and how long is "a bit later"? Is there heat involved? Your details are vague. Quote Link to comment Share on other sites More sharing options...
cgsheen Posted July 8, 2014 Share Posted July 8, 2014 Ya, if you're talking about a nissan optical module, I had the same thing happen. Turned out to be a broken solder joint on one of the pins (blades) that the harness connector plugs into. I had an intermittant drop out of the CAS signal to the ECU. I could have just replaced the optical unit but I resoldered all the pins and it's worked just fine for the last 2 or 3 years. Quote Link to comment Share on other sites More sharing options...
Kirkster Posted July 8, 2014 Author Share Posted July 8, 2014 NewZed. It ran fine for the first 22 seconds then cut out for 4 seconds then ran for 1 second then cut out for 3 seconds and ran for 1 second then cut out for 17 seconds then ran for a second then cut out for 4 seconds then ran for 1 second then cut out for ten seconds then ran fine for 4 seconds... Then at the end of the log file it was ok for a while. cgsheen. That is exactly what seems to be happening. I pulled the optical module and it seems that the four pins you are talking about are protruding from the epoxy bedding. The four pins that just seem to be tack welded together in two spots for each pin? They are the only pins that are above the epoxy right above the connector. I will solder them and put it back in the car and see what happens... Quote Link to comment Share on other sites More sharing options...
cgsheen Posted July 8, 2014 Share Posted July 8, 2014 Yup, that's them. You may need to clean off the coating before you'll be able to re-solder and re-do all 4 to be safe. Quote Link to comment Share on other sites More sharing options...
ihavearustedz Posted July 8, 2014 Share Posted July 8, 2014 I had the same thing happen. I bought a new one from my local parts store, it's been good for the past year. Quote Link to comment Share on other sites More sharing options...
Kirkster Posted July 10, 2014 Author Share Posted July 10, 2014 I would like to say that I soldered it up and fixed it, but I just could not get it de gooped enough to solder the pins up. So I ordered a reman one and it came with the new style sensor. That fixed the problem. No sync loss at all any longer. She finally runs well enough to get her to the tuner. Quote Link to comment Share on other sites More sharing options...
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