McLegacy Posted December 27, 2015 Share Posted December 27, 2015 Hi everyone I'm in a 1997 Legacy L wagon. Recently I found that one of the nodes on my coil pack is very corroded, along with its corresponding wire. I assume it is arcing and creating a carbon buildup. I've been experiencing engine lurch while driving, a little more when accelerating, and its smelling a little rich. I account most of it to this problem. I've ordered new wires and a new coil pack to replace these ones. However, I am also getting hesitation and slight lurching accompanied by what sounds like a relay click coming from one by my left leg. I've done some research and found that this happens to people with their A/C relays, but this has all been happening with the heater on. Possible factors/additional notes: - I just replaced an O-ring in my power steering pump. Since it's on the same belt as the alternator, could a loose belt be the issue? -The majority of these clicks happened below freezing temps. Heater was on + defroster. When the click happens the fans fluctuate. - The clicks also seemed to happen when the engine was under stress (accelerating, uphill w/ luggage). - Corroded coil pack-wire connection on piston 1. - CEL is on. Will check the code when I'm home. (On ski vacation right now). -Clicks are always accompanied by lurching, but lurching is not always accompanied by clicking. I assumed the corroded coil pack node causes the lurching (misfire) when there's no click. I turned the heater, fans, A/C off and the clicks still happened, just a lot less. A similar click happens when I turn the fans on or off, but no lurching/hesitation. Can anyone help me understand what's going on? Link to comment Share on other sites More sharing options...
Guest Posted January 2, 2016 Share Posted January 2, 2016 Bump Link to comment Share on other sites More sharing options...
McLegacy Posted January 5, 2016 Author Share Posted January 5, 2016 Found the issue. Severely corroded ignition coil node on coil 1 caused by a bent plug wire connector. Replaced both and the old grandpa wagon is driving happy I don't know what caused the click, but it went away with the new stuff. Link to comment Share on other sites More sharing options...
RustyRuu Posted January 6, 2016 Share Posted January 6, 2016 the a/c is on when the defrost is on. even if its only heat. its suppose to take the moisture out off the air working with the heat to defrost the window. Link to comment Share on other sites More sharing options...
bjkroll Posted January 8, 2016 Share Posted January 8, 2016 ^^^ Also good to run your A/C periodically, as it keeps it lubricated. This method of defrosting kind of forces that. My A/C system is 17yrs old and still works! Link to comment Share on other sites More sharing options...
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