Toyota 4Runner Problem Report

Toyota 4Runner Driveability Concerns Due to Throttle Position Sensor Out of Adjustment

(10 reports)

The Throttle Position Sensor can get out of adjustment due to wear in the throttle body or due to carbon build up. This will cause the idle timing to advance more than 30 degrees which will cause very high HC and NOx emissions. Conversely, the Throttle Position Sensors can wear out and not properly advance the timing which causes a lack of power and poor fuel economy.

over heating and no power -
speedometer stops registering, gears slip, over revving and temperary loss of power.. -
Related Items:
I change valve cover and intake gaskets. now she will not stay running. starts for just a few s...
1992 Toyota 4 runner rear brakes lock up while driving with out touching peddle and red brake l...
I read the manual and the idle is supposed to adjust automatically.
notice build up of oil leaking from power do i locate hoses
We installed an electric fan a few years ago that was using 13amps. Installed new one that use...