My 4Runner runs perfectly 99% of the time, but lately (within the last 2 weeks) when I'm at a stop light idling for a while, it hesitates when I start going again. I have about 82K on the motor and changed the spark plugs about 10K ago, it runs fine otherwise. Not sure what the culprit could be, I'm thinking of running down the usual suspects (air filter, injectors, fuel filter, etc.) Anyone got any suggestions? Thanks for the help.

 

I had the same issue till I started running a K&N filter.
I contribute this to less air restriction. TPS could be culprit as well.

 

What's TPS?

 

TPS is throttle position sensor. This is an electronic component that tells the ECM where the throttle position is. from the tps and the MAF the ECM decides how much fuel to give the engine.

SEAFOAM is a choice for the injectors. put some in the fuel tank and drive.
simply follow the directions on the bottle.

 

dirty MAF

clean it and tell us problem is fixed

 

I had done this many times thinking it may help but no. just the air filter actually did.
not saying it doesn't help at all but not noticeable in my exp. so what have you found?