estcon Posted June 2, 2012 Share Posted June 2, 2012 I have a 91 Subaru Legacy 2.2 non turbo. After replacing head gaskets , I am getting no spark.I took great care getting the timing belt exactly lined up as specified. According to the on board diagnostics, the cam position sensor was bad. I replaced it. The new one doesn't produce any better results. Any thoughts? Link to comment Share on other sites More sharing options...
Gloyale Posted June 2, 2012 Share Posted June 2, 2012 I have a 91 Subaru Legacy 2.2 non turbo. After replacing head gaskets , I am getting no spark.I took great care getting the timing belt exactly lined up as specified. Did you use the notches or the arrows. Notches = yes Arrows = no Link to comment Share on other sites More sharing options...
mikaleda Posted June 2, 2012 Share Posted June 2, 2012 do the wires that go to the cam positioning sensor have power? you might have accidentally broke them when you replaced the head gasket. Link to comment Share on other sites More sharing options...
estcon Posted June 2, 2012 Author Share Posted June 2, 2012 Did you use the notches or the arrows. Notches = yes Arrows = no Notches... the second time Link to comment Share on other sites More sharing options...
Ricearu Posted June 2, 2012 Share Posted June 2, 2012 check the cam position sensor (driver side head) and its wire that hooks below the throttle body, also, make sure you use the notch on the trigger wheel BEHIND the crank timing sprocket. If it's off time, the computer won't trigger spark. Link to comment Share on other sites More sharing options...
Cougar Posted June 2, 2012 Share Posted June 2, 2012 If you haven't yet made sure there aren't any blown fuses you need to do that. Link to comment Share on other sites More sharing options...
estcon Posted June 2, 2012 Author Share Posted June 2, 2012 Wires& plugs are intact Link to comment Share on other sites More sharing options...
estcon Posted June 2, 2012 Author Share Posted June 2, 2012 Fuses good Link to comment Share on other sites More sharing options...
Cougar Posted June 2, 2012 Share Posted June 2, 2012 If you haven't verified power is getting to the ignition system first you may waste a lot of time in hunting down the trouble. Whenever the ignition system isn't working, making sure power is getting to it is the first thing to check. Even though wires are intack it doesn't mean they are live. Link to comment Share on other sites More sharing options...
chucktile Posted June 3, 2012 Share Posted June 3, 2012 check the cam position sensor (driver side head) and its wire that hooks below the throttle body, also, make sure you use the notch on the trigger wheel BEHIND the crank timing sprocket. If it's off time, the computer won't trigger spark. What Ricearu said. Link to comment Share on other sites More sharing options...
Fairtax4me Posted June 3, 2012 Share Posted June 3, 2012 Cam sprockets could be on the wrong sides. The one on the drivers side is marked with an L, and has a few notches on the back that the cam sensor reads to determine fuel injection timing. Without the notches the ECU sees no signal from the cam sensor, you get no fire. The passenger "R" cam sprocket has no notches. Link to comment Share on other sites More sharing options...
estcon Posted June 4, 2012 Author Share Posted June 4, 2012 Cam sprockets could be on the wrong sides. The one on the drivers side is marked with an L, and has a few notches on the back that the cam sensor reads to determine fuel injection timing. Without the notches the ECU sees no signal from the cam sensor, you get no fire. The passenger "R" cam sprocket has no notches. I thought that I kept them in the proper order, but I'll check again, Thanks Link to comment Share on other sites More sharing options...
estcon Posted June 7, 2012 Author Share Posted June 7, 2012 Cam sprockets could be on the wrong sides. The one on the drivers side is marked with an L, and has a few notches on the back that the cam sensor reads to determine fuel injection timing. Without the notches the ECU sees no signal from the cam sensor, you get no fire. The passenger "R" cam sprocket has no notches. That was my bad, I foolishly thought that the "L" meant left as I was looking at the engine... THANKS! Link to comment Share on other sites More sharing options...
Fairtax4me Posted June 7, 2012 Share Posted June 7, 2012 Always keep in mind that parts marked with L or R will be referring to position based on sitting in the car. Are we to assume this fixed the problem and it now runs flawlessly? Link to comment Share on other sites More sharing options...
mikaleda Posted June 7, 2012 Share Posted June 7, 2012 wow good to know i would probably do the same thing. Link to comment Share on other sites More sharing options...
estcon Posted June 8, 2012 Author Share Posted June 8, 2012 Always keep in mind that parts marked with L or R will be referring to position based on sitting in the car. Are we to assume this fixed the problem and it now runs flawlessly? Why, yes it does, thanks for the help! Link to comment Share on other sites More sharing options...
ivans imports Posted June 8, 2012 Share Posted June 8, 2012 was going to say cam sprockets on wrong sides Link to comment Share on other sites More sharing options...
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