mdjdc Posted January 6, 2009 Share Posted January 6, 2009 I just resealed the engine on a 96 outback 2.5 dohc. Now when I start the car it reve a 2 grand until it is finally warm and then drops to 1000 or less. When you put it in gear it goes in just fine, but when I put it in neutral or drive ( automatic tranny) it will surge to 2000 and then come right down. What could be causing this? Vacuum leak or a bad IAC? Coolant temp sensor? Just looking for some advice so I can finish off the car. I'm fixing it for a friend's daughter and i want it to run flawlessly. Thanks guys Mike Link to comment Share on other sites More sharing options...
Gloyale Posted January 6, 2009 Share Posted January 6, 2009 I just resealed the engine on a 96 outback 2.5 dohc. Now when I start the car it reve a 2 grand until it is finally warm and then drops to 1000 or less. When you put it in gear it goes in just fine, but when I put it in neutral or drive ( automatic tranny) it will surge to 2000 and then come right down. What could be causing this? Vacuum leak or a bad IAC? Coolant temp sensor? You nailed the first few things I would think of. Although, it could be that the ECU needs to *relearn* it's parameters. When it surges, does it then drop down and settle? Or does it keep going up and down? Link to comment Share on other sites More sharing options...
mdjdc Posted January 6, 2009 Author Share Posted January 6, 2009 It surges then drops down and stays there. I was thinking about the ecu relearning too. Link to comment Share on other sites More sharing options...
Gloyale Posted January 6, 2009 Share Posted January 6, 2009 Drive it a while. And really that behavior doesn't seem all that odd anyway. As long as it stabalizes realtively quickly and isn't trying to stall I think it is OK. Link to comment Share on other sites More sharing options...
nipper Posted January 6, 2009 Share Posted January 6, 2009 this is not relearning anything, this is something else. Double check the electrical connection and the EGR, IAC and all vacume hoses. nipper Link to comment Share on other sites More sharing options...
mdjdc Posted January 7, 2009 Author Share Posted January 7, 2009 It's funny, yesterday I tookthe car for a drive and the longer I drove it and the warmer it got the less the symptom showed itself. To the point that after 3 miles of driving I put it into neutral and it didn't surge at all. Now the starting rpm's are lower and it kicks down faster when cold. I will check all the connections and especially the egr. Link to comment Share on other sites More sharing options...
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