AE92 Idle Trouble on first start - Toyota Nation Forum : Toyota Car and Truck Forums

kazki · 02-09-2012, 09:53 PM

Hi, i have a problem with my AE92 1.6 Liters Engine.. everytime i start my car in morning my idle goes to 700 then it will down to zero then up again to 700 and so fort.. but if my engine starts to warm up my idle becomes okay.. Please help me to resolve my problem with my idle every first start / warming up my car.

eberbs1 · 02-09-2012, 10:15 PM

is it carb or efi?

kazki · 02-12-2012, 10:43 PM

its a carb.. i changed my ignition coil but it doesnt fix my problem..

90 GP · 02-13-2012, 04:47 AM

Vac leak is likely the problem and in particular in vac lines going to/at the throttle positioner. It's located on right side of carb and has multiple vac lines attached and is designed to engage on deceleration from speed and when a load is placed on engine (a/c turning wheel/ turning on lights etc). It has two separate speed settings and when you get a vac leak at the positioner it ends up fluctuationg the idle speed like you are experiencing. Fix the vac leak and that should take care of it. Here's a link to give more info on the positioner.

http://www.autozone.com/autozone/rep...00c1528006f1cc

kazki · 02-14-2012, 04:03 AM

ok thanks i'll see to that.. i'll post for any changes thank you