sesat88
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- Jul 24, 2006
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Sharing some finding and thoughts i went through to solve MY idling issues. If anyone would like to chip in please feel free to do so. 
---------1. vacuum leak - check and maybe change all your air hoses especially the one coming out from the TB. Make sure they are secured tightly and the hoses itself are not cracked.2. ICV - idling control valve may be dirty or jam. Should try cleaning it, else purchase a new one. There are DIY webpages on this.3. The TB(throttlebody) Boot Cover i.e. the J-shape rubber cover thingy that connect the AFM/MAF sensor to the RB. The cracks/holes are not noticible until you take it out and carefully inspect it. You should replace it (quite cheap) if it is old4. Fuel pump / regulator - maybe giving way. Quite common and will affect the idling.5. Fuel Filter - clogged and dirty. Change it and u might beat the idling issue. New ones also decrease your FC and then engine run smoother6. Sparkplugs - one of them may not be firing properly7. Ignition Coils / Sparkplug wires - may not be providing sufficient voltage and malfunctioning8. Cooling system - this one i still cannot figure out(x-files) but some say the clutch fan or the thermo switch may be malfunctioning hence causing low idle. Check your coolant level and cooling system.9. AFM / MAS - malfunctioning causing irregular signals to the ECU hence the incorrect readings causing confusion therefore irregular idling10. Manifold and TB seals - these things are the most difficult to check as you need to take out the whole niamah manifold to do it.
---------1. vacuum leak - check and maybe change all your air hoses especially the one coming out from the TB. Make sure they are secured tightly and the hoses itself are not cracked.2. ICV - idling control valve may be dirty or jam. Should try cleaning it, else purchase a new one. There are DIY webpages on this.3. The TB(throttlebody) Boot Cover i.e. the J-shape rubber cover thingy that connect the AFM/MAF sensor to the RB. The cracks/holes are not noticible until you take it out and carefully inspect it. You should replace it (quite cheap) if it is old4. Fuel pump / regulator - maybe giving way. Quite common and will affect the idling.5. Fuel Filter - clogged and dirty. Change it and u might beat the idling issue. New ones also decrease your FC and then engine run smoother6. Sparkplugs - one of them may not be firing properly7. Ignition Coils / Sparkplug wires - may not be providing sufficient voltage and malfunctioning8. Cooling system - this one i still cannot figure out(x-files) but some say the clutch fan or the thermo switch may be malfunctioning hence causing low idle. Check your coolant level and cooling system.9. AFM / MAS - malfunctioning causing irregular signals to the ECU hence the incorrect readings causing confusion therefore irregular idling10. Manifold and TB seals - these things are the most difficult to check as you need to take out the whole niamah manifold to do it.
