Idles up and down and stalls sometimes .it does not sputter.check engine light goes off and comes on
Yes on a Toyota 1az it usually do that after you've exceeded the major service time frame of every 50k so the timing chain slips to a better pos that is tdc instead of 10degreesbtdc so that causes flooding and preignition that with confuse the throttle and start to point on accelarator pedal position code you need a qualified mec to correct that
SOURCE: Loping and high idle
You are really onto it! Either the TPS or the cable from the peddle. Do check the cable first. Frankster016
SOURCE: Idle jumping up and down
MAKE SURE WHEN YOU PLUGGED THE SPARK PLUGS IN THAT YOU GOT THEM IN THE RIGHT FIREING ORDER,ALSO MAKE SURE THAT YOUR THROTTLE BODY IS OPERATING NORMALY WATCH IT WHILE THE CAR IS RUNNING TRY MOVING THE THROTTLE BODY ROD BY HAND
SOURCE: 2003 toyota sienna idle problem
After about 100K + miles the idle air control valve (IAC) begins to collect carbon deposits that interfere with the movement of the spring-loaded valve. You will not be able to clean this without removal and dissembly of the IAC body. Use an emory cloth or fine sandpaper to remove the build up around the valve. This should free it up to rotate without binding. This is a temporary fix, of course, and will either require cleaning again or replacement of the valve. Getting to the IAC requires removal of most of the intake upto, but not including, the intake manifold. Total time is approximately 3-4 hours, but worth it. Good luck, and I hope this helps.
SOURCE: how do you clean a throttle body on 1999 s70?
try this b4 taking things apart... redexe/wynns fuel additive and using high octane fuel the computer will adjust running accordingly...
SOURCE: idles speed adjustment to low in Toyota Camry 2004
Try cleaning the inside of the throttle body using a stiff brush and a can of air intake cleaner, remove all the carbon, make sure battery is disconnected while doing this, then reconnect and drive it for about 15 minutes this should restore the idle.
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