Low Idle and Misfire for 6 months... Help Please!

[redback]

Need help on this same issue.... feels like a contant missfire....... came on suddenly

 

[earthman]

G'day Redback

My idle bottomed out when slowing down and stopping for about 2 months. Very strange symptom. Could not work it out for ages and tried everything from least expensive thing to fix to the most expensive, of course it ended up being the most expensive: the alternator.

I tried cleaning ISC, changed AFM, cleaned throttle, checked for vacuum leaks, checked coil and ignitor wiring, checked ECU plugs for corrosion, changed the ECU water temp sensor and the alternator was last on my list but I did not get to it before it died and it left me stranded. The auto sparky said it was irreparable so I got a new one and have not had the problem since.

Here is a couple of threads with people with similar problems, but different causes, they may have some clues.

http://lextreme.com//forums/showthread.php?t=6186&highlight=low+voltage
http://soarercentral.com/sc-forum/messages/51875/274437.html
http://lextreme.com//forums/showthread.php?t=7203
http://www.lextreme.com/forums/showthread.php?p=107002#post107002

Hope this helps.