surftaz

Hello,
I have a 97 sr5 4 runner.
It has 135Kon it, It just started to idle roughly, I cleaned the Mass air flow, the air box and tube, I have replaced the spark plugs, the Fuel filter and it still seem to idle poorly,
Any suggestions? Can the catylic converter mess up the idle, my converter seems to smeel a lot more than it did,
Thanks,
Surftaz

rimpainter.com

Give us a little more description...

does the engine have a timed shudder? Is it just a distant vibration? Is it a miss?

Take a dollar bill and hold it up to your exhaust pipe while the motor is idling, hold it about 1/4 inch from the pipe. If you have a miss, it will pop the dollar bill. Let us know what you find out.

MTL_4runner

Use some carb cleaner and an old toothbrush to clean your throttle body.
The TB is the most common cause for poor idle.

If you have a clogged converter the performance of the truck at highway would be lacking all power.

evilcow

Have you checked the PCV valve? Also check for vacum hose crack's/leaks.