CEL...Common causes on '00 models?

[Ebbsnflows]

Ok, out of nowhere my check engine light popped up on my 2000 4Runner. Initially I suspected the Gas gap. But that was 4 tanks of gas ago...and it's still on.

Vehicles specs:
-2000
-72,000 miles
-SR5 V-6

-No perceived change in performance or fuel economy. Just the damned annoying light. The 2 Autozones I've tried say that they don't offer the free code checks. So please give me the most common causes that you guys have experienced or read about. 02 Sensors? Catalytic converters? This is my first Toyota (and my first "non-performance vehicle"). I am very mechanically inclined (built my own 10 Second street/Drag car, work on my own bike, and do all the suspension/motor work on my SVT Lightning...and I have diagnostic software/hardware for all of those....just not the 'Yota).

so if you could at least give me some places to start looking I'd appreciate it. Thanks!

 

[lee]

dude, get the code pulled.

its most likely the Mass Airflow Sensor.

http://www.4x4wire.com/toyota/maintenance/tacoma_4runner_30k/maintenancep5.html

that page will tell you how to clean it.

 

[mikes4runner]

yes the MAF, clean it with electronics cleaner and you are good to go. reset the ECU(disconnect the battery for a couple min.) and wait and see.

If it comes back on I would take it to Toyota to have the codes pulled.

Mike

 

[Ebbsnflows]

Thanks for the help guys. I'll do that this afternoon. Hopefully that's exactly what it is.