subaruVWnut Posted February 18, 2006 Share Posted February 18, 2006 Had this problem a few months back.....swapped ignitor, coil, checked wiring continuity in between coil, ignitor, and to the ECU.....all OK.. Installed new ECU and that seemed to be a cure.... Now the problem is back? Absolutely no spark on the 3-4 bank. One suggestion was a bad spark plug or wire on 3 or 4. Still checking on that ...but not clear on the concept....how would this cause no spark at all on these two cyls. Any other suggestions appreciated..... Not sure if I now have two dead ECU's....and something that blows them out ?????? or some other problem. NEED HELP ! TIA. Warren C. Link to comment Share on other sites More sharing options...
OB99W Posted February 18, 2006 Share Posted February 18, 2006 [...]Now the problem is back? Absolutely no spark on the 3-4 bank. One suggestion was a bad spark plug or wire on 3 or 4. Still checking on that ...but not clear on the concept....how would this cause no spark at all on these two cyls.[...] Perhaps the following links will help provide some insight concerning the relationship between spark for two cylinders and the coil pack, as well as some troubleshooting info. http://endwrench.com/images/pdfs/IgnitionCoil.pdf http://endwrench.com/images/pdfs/DirectIgnition.pdf http://endwrench.com/images/pdfs/IgnitionCoilSum04.pdf Link to comment Share on other sites More sharing options...
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