zbrown Posted April 25, 2014 Share Posted April 25, 2014 Only pulled 1 sprocket to change the water pump. My chilton tells me how to test a 3 wire coil, but this one is a 4 wire coil. Can't figure why this one has a 4 wire coil unless it has something to do with the EGR? Any suggestions? Link to comment Share on other sites More sharing options...
zbrown Posted April 25, 2014 Share Posted April 25, 2014 I talked to a Subaru mechanic & he said the 4 wire coil is only on California models (emissions ?) & he couldn't find anywhere that told him how to test it. Go figure. Link to comment Share on other sites More sharing options...
Gloyale Posted April 26, 2014 Share Posted April 26, 2014 One wire is 12v One wire is ground the other 2 are the signal from transistor. You can figure the ground and 12v by unpluggint the connector and probing for 12v and continuity to ground. After that......hook a test light to 12v and probe the remaining 2 wires during cranking.....you should see pulse in the light......If there is no pulse...the transistor is supect.....If the light pulses....but you don't get spark......your coil is bad. I Would disconnect and reconnect the main engine connectors to make sure you don't just have a loose connection. Link to comment Share on other sites More sharing options...
zbrown Posted April 27, 2014 Share Posted April 27, 2014 Thanks! going out to give it a try right now! Link to comment Share on other sites More sharing options...
zbrown Posted April 27, 2014 Share Posted April 27, 2014 We did the test & we have ground & continuity to ground. We see pulse during cranking on one wire. We have no pulse on the greyish blue wire.We have dim glow before cranking.You said the transistor is suspect, Where is the transistor & how do you test it? Link to comment Share on other sites More sharing options...
hawthorne378 Posted August 23, 2015 Share Posted August 23, 2015 have the same problem. but i replaced head gaskets . had it towed to local garage which they did get it started with new coil pack wires wnd plugs . but the car has no power at all. car ran fine when i took it apart now they want to replace the catalyic converter,think theg are just throwing parts at it hoping for the best. Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted August 23, 2015 Share Posted August 23, 2015 hawthorne - start a new thread asking for a mechanic near your city. maybe someone will suggest a good shop for you. Link to comment Share on other sites More sharing options...
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