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

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.

RepairPal Verified
Average mileage: 186,500 (131,000–225,000)
6 model years affected: 1992, 1993, 1994, 1995, more1996, 1997
11 people reported this problem
2 people shared problem details
1994 Toyota 4Runner190,000
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 steering...how do i locate hoses
We installed an electric fan a few years ago that was using 13amps. Installed new one that use...

Related Content