budd_davidhotmail.com Posted November 9, 2013 Share Posted November 9, 2013 Hey -- when my radiator fan kicks on, my idle is really rough. Otherwise she runs perfectly. This started when I had the plugs changed at about 192,000 km. Any thoughts? Link to comment Share on other sites More sharing options...
rob-2 Posted November 10, 2013 Share Posted November 10, 2013 Have you re-learned the idle? Link to comment Share on other sites More sharing options...
budd_davidhotmail.com Posted November 10, 2013 Author Share Posted November 10, 2013 How do I do that? I have disconnected the battery for sometime -- didn't help, just got the seatbelt chime going again! Link to comment Share on other sites More sharing options...
McDowell Performance Tunin Posted November 10, 2013 Share Posted November 10, 2013 Plugs might have the wrong gap. Could also be a dirty MAF sensor or a number of other items. I would start with the easy job. Clean your MAF sensor and make sure your air filter doesn't need replaced. Sent from my SAMSUNG-SGH-I747 using Tapatalk www.facebook.com/mcdowelltuning [sIGPIC][/sIGPIC] Click Here for Stage1, Stage2 and Stage3 Tuning and eTuning Info Link to comment Share on other sites More sharing options...
budd_davidhotmail.com Posted November 10, 2013 Author Share Posted November 10, 2013 MAF has been cleaned, it was dirty but still -- if the fan kicks on, idles really rough, when the fan isn't running, smooth. It's like the fan gets the load on the alternator and a miss develops. No Check Engine Light though. All times the driving is smooth. Idle is smooth just idle when the fan kicks in causes a problem. MPG is the same as always. 550 km per tank. Link to comment Share on other sites More sharing options...
trhull Posted November 10, 2013 Share Posted November 10, 2013 I just replaced my Intake Manifold to TGV gaskets and it fixed the problem for me. The car isn't just reacting to the load from the fans, likely what is happening is that the AC is coming on which at low vehicle speeds also kicks the fans on. Hopefully my problem is fixed for good with the new gaskets. Link to comment Share on other sites More sharing options...
McDowell Performance Tunin Posted November 10, 2013 Share Posted November 10, 2013 Did you replace the plugs with OEM plugs, or something different? Since it started after you changed your plugs, I'm guessing it's related. You can have your alternator checked out as well. Hard to say, but I would have your alternator looked at. www.facebook.com/mcdowelltuning [sIGPIC][/sIGPIC] Click Here for Stage1, Stage2 and Stage3 Tuning and eTuning Info Link to comment Share on other sites More sharing options...
ehsnils Posted November 10, 2013 Share Posted November 10, 2013 How do I do that? I have disconnected the battery for sometime -- didn't help, just got the seatbelt chime going again! The idle is bad for a while after you have disconnected the battery. It requires a few cold to warm cycles to really re-learn. Link to comment Share on other sites More sharing options...
rob-2 Posted November 10, 2013 Share Posted November 10, 2013 How do I do that? I have disconnected the battery for sometime -- didn't help, just got the seatbelt chime going again! Car on, turn all things off. Unplug battery. Tap brake pedal to drain system. Wait 5 min. Re connect battery. Turn key to acc mode, wait 30 seconds and then start. Let idle till fans kick in 2 times. Turn car off. Wait 1 minute and start car. Then drive for a bit. Should have short term idle learn and will improve with time. Assuming something with the learning idle is wrong. Link to comment Share on other sites More sharing options...
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