Redhill Posted February 10, 2018 Share Posted February 10, 2018 Hello- I have a 1998 forrester with an unknowned year 2.2 engine (it's a frankencar). I've had this car for almost ten years and it has ran good untill now. The problem is a no spark issue. I have changed the crank position sensor and coil and am thinking about the icm. Searching online I found a vendor that listed two for my engine, both looked like they would plug in and work. One cost $30 and the other was $160. I was just wondering what the differance is between them? Thanks, Red. BTW, the car runs good it's just hard to start at times. 1 Link to comment Share on other sites More sharing options...
Gloyale Posted February 10, 2018 Share Posted February 10, 2018 I suggest you check the Coolant Temp Sensor. Hard start intermittently is often this. ICM or "Ignition Transistor" seldom fail. And if they do, it's usually a hard fail, not intermittent. Link to comment Share on other sites More sharing options...
Redhill Posted February 10, 2018 Author Share Posted February 10, 2018 thanks for the reply Gloyale, I have replaced the coolant temp sensor. would the cam position sensor be worth a try to replace? Thanks Link to comment Share on other sites More sharing options...
rocketman Posted February 10, 2018 Share Posted February 10, 2018 How are you testing for spark? NGK plugs and wires? Link to comment Share on other sites More sharing options...
Redhill Posted February 11, 2018 Author Share Posted February 11, 2018 the plugs are NGK, the wires are a napa brand. In a no start condition, I use a good NGK plug and pull a plug wire off and make sure the plug threads are grounded. Eventually the plug will start sparking and sometimes the engine will start on three cylinders. Sometimes when this happens, the spark looks weak (orange). The car has never left me stranded, just once a week is hard to start. It has never been hard to start cold. I just thought I would try a ICM for $30, if I need the $160 ICM, I'll have to think that over. Thanks for your thoughts, Red. Link to comment Share on other sites More sharing options...
rocketman Posted February 11, 2018 Share Posted February 11, 2018 How old is plugs and wires? Link to comment Share on other sites More sharing options...
Redhill Posted February 11, 2018 Author Share Posted February 11, 2018 The plugs are new, the wires are two or three years old. Link to comment Share on other sites More sharing options...
rocketman Posted February 11, 2018 Share Posted February 11, 2018 Have you measure how much resistance in plug wires? Link to comment Share on other sites More sharing options...
rocketman Posted February 11, 2018 Share Posted February 11, 2018 I may be wrong on this,but I put dielectric grease on my boot connections,maybe some else will chime in here. Link to comment Share on other sites More sharing options...
heartless Posted February 11, 2018 Share Posted February 11, 2018 get some better wires - NGK wires or OEM I have used the parts store brand of wires before and had issues with them, as have others. They just don't last Link to comment Share on other sites More sharing options...
Redhill Posted February 11, 2018 Author Share Posted February 11, 2018 thanks for the replys, I'll get some new plug wires and try that Link to comment Share on other sites More sharing options...
lmdew Posted February 11, 2018 Share Posted February 11, 2018 Subaru or NGK Wires and NGK copper core plug highly recommended. Link to comment Share on other sites More sharing options...
Redhill Posted February 12, 2018 Author Share Posted February 12, 2018 subaru plug wires are supposed to be here by friday, thanks again for your thoughts, red Link to comment Share on other sites More sharing options...
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