Hey gang. I'm a new member to this site, but i've visited here ever since i've been having trouble with the rig.(I'm also a first time toyota owner)I've been very happy with it so far,till now.Since it's the first one i've owned,it's probably an easy fix(so I thought)About 2 months ago, i started having a problem with the 95.When I came to a stop, it would idle rough, and as I accelerated, it had no power and would start to buck at 60 mph. The cel came on with a 25 code.I had cleared the code, and then it came on a few days later with a 25 and 26.You could smell unburned: gas at the exhaust.I found this site and started reading the threads.Lots of great reading. I then started to replace parts. Cap,rotor,fuel filter, air filter,plugs ,wiresand recently the MAF sensor with a used one.( NEW...$1400...NOT CHEAP).Even after all this,the cel still flashed a 25.I'm pretty much at wits end.Hopefully you guys can help me try to figure out this very frustrating problem which some of you probably dealt with at some point.

 

Try checking for an O2 sensor wire shorted to ground, I have seen this on other vehicles before. Next spray some wd-40 around the intake to check for intake gasket leaks and make sure the air intake boots are tight and not cracked. If none of this helps, let me know.