Throttle position sensor help

1998 prerunner 3.4.My CEL is on, getting a 0120 code. I've replaced the TPS, and cleaned the throttle body. Any suggestions on what to do next?

 

MAS...is it running rough?

 

Did the CEL go out?

Did you search www.google.com for any of this?
I did - and in a matter of 2 minutes found this:
http://www.toyotanation.com/forum/showthread.php?t=214564
http://www.tacomaterritory.com/forum/showthread.php?t=7553
http://www.tankota.net/repair/Repair_Manual/03tacoma/di/eg2rzfe3/cip0120.pdf
http://www.yotatech.com/f2/p0120-throttle-position-sensor-switch-circuit-malfunction-138869/

And lastely...have you ever changed your Oxygen sensors?

 

Code does not always=replace part. Check the wiring and connections for shorts/opens and corrosion. Put dielectric grease in connectors as you go.
Good luck

 

The cel would come and go until I replaced the tps, now it seems to stay on most of the time. Starts hard, dies,won't shift correctly.
I did do a search about this, but there seems to be no consistent cure for the problem. I have checked for loose connections, tried moving the tps slightly, cleaning the throttle body, and finally replacing the tps. Now in the proccess of checking voltage and resistance.
I have never replaced the oxygen sensors. Wouldn't that be giving me a different code?
I will clean the mas. Probably needs cleaning again anyway.

Thanks for the help!

 

Are you running a cold air intake? If so, def clean the MAS. But be careful. I just did my 03, but I think the earlier MAS are a different design.

 

I did the deck plate mod. Does that have anything to do with it?

 

what type of tps sensor did you put back in...oem or aftermarket?

 

Aftermarket from NAPA.

 

honestly....that could be the problem.