rweddy Posted September 5, 2009 Share Posted September 5, 2009 My roo has an erratic idle from time to time. I have new plugs wires, pcv, etc. It is fine 90% of the but occasionally idle will drop below 500 & barley run,sometime even die. Any ideas? Link to comment Share on other sites More sharing options...
lmdew Posted September 5, 2009 Share Posted September 5, 2009 IAC sticking. Try Seafoam down the 1" air tube, let is soak and then start it up. The only other way to clean them is to pull it off the intake. Link to comment Share on other sites More sharing options...
Durania Posted September 6, 2009 Share Posted September 6, 2009 I had a bad MAF cause some of the symptoms that you are mentioning. Any check engine lights? Link to comment Share on other sites More sharing options...
idosubaru Posted September 6, 2009 Share Posted September 6, 2009 is this a legacy or what? idle control are notorious for issues with age/mileage/dirt, though i don't have personal experience with this in legacy's so i'm not familiar with how their idle control is set up. typically they only need cleaned. Link to comment Share on other sites More sharing options...
Durania Posted September 6, 2009 Share Posted September 6, 2009 Kinda had to assume it was a legacy since it was said to be a 91, or a misplaced Loyale or XT6. Link to comment Share on other sites More sharing options...
rweddy Posted September 6, 2009 Author Share Posted September 6, 2009 IAC sticking. Try Seafoam down the 1" air tube, let is soak and then start it up. The only other way to clean them is to pull it off the intake. What tube is this Larry? Link to comment Share on other sites More sharing options...
rweddy Posted September 6, 2009 Author Share Posted September 6, 2009 is this a legacy or what? idle control are notorious for issues with age/mileage/dirt, though i don't have personal experience with this in legacy's so i'm not familiar with how their idle control is set up. typically they only need cleaned. Sorry forgot I don't have signature anymore. 91 Legacy LS 2.2 Link to comment Share on other sites More sharing options...
lmdew Posted September 6, 2009 Share Posted September 6, 2009 1" black hose comes off just after the air cleaner on the bottom of the 3" air duct. It's about 8" long and goes to the IAC on the manifold. Cleaning the MAF with the MAF cleaner would also be a good idea if it has not been done. Link to comment Share on other sites More sharing options...
rweddy Posted September 6, 2009 Author Share Posted September 6, 2009 1" black hose comes off just after the air cleaner on the bottom of the 3" air duct. It's about 8" long and goes to the IAC on the manifold. Cleaning the MAF with the MAF cleaner would also be a good idea if it has not been done. Great I will do both, is there actually a MAF cleaner? I have done it on other cars with carb cleaner. Anyone have a write up on cleaning the MAF? Link to comment Share on other sites More sharing options...
lmdew Posted September 6, 2009 Share Posted September 6, 2009 Yes, they do sell MAF cleaner at most auto parts stores. If I could not find it, I'd use electrical contact cleaner. Pull the filter box off, if you pull the air tube off you can spray the MAF from both sides. Spray it good and then let it air dry. Put it all back together. Larry Link to comment Share on other sites More sharing options...
shadetreemech Posted September 6, 2009 Share Posted September 6, 2009 If your 2.2 is hard starting, rough idle, black smoke at start (too rich), you should check the fuel pressure regulator vacuum line. It should be dry, if there is gas in it, the regulator has internal leak and can give these symptoms. Link to comment Share on other sites More sharing options...
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