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'98 Legacy 2.2, timing belt woes, cam loading?

timing belt rough idle

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29 replies to this topic

#26 zbrown

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Posted 25 April 2014 - 03:57 PM

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?



#27 zbrown

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Posted 25 April 2014 - 05:38 PM

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.



#28 Gloyale

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Posted 26 April 2014 - 11:03 AM

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.



#29 zbrown

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Posted 26 April 2014 - 07:08 PM

Thanks! going out to give it a try right now!



#30 zbrown

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Posted 26 April 2014 - 09:30 PM

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?







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