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.
Resources for the Repair and Maintenance of your 1998 Toyota T100
1998 Toyota T100
1998 Toyota T100 Problems
On vehicles with a manual transmission, worn shift bushings can cause the transmission to pop out of gear, especially when coasting down in 1st or 2nd gear. Replacing all the shift linkage bushings is pretty straight forward and not expensive and will commonly correct this concern.
At higher mileages, (125,000-150,000) the automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to be replaced. Typically the transmission does not need to be completely overhauled.
At higher mileages (125,00+) the Engine Coolant Temperature Sensor may intermittently stop working, especially when the vehicle is fully warmed up. This can result in illumination of the Check Engine Light and/or an engine stalling problem.
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is al...
1998 Toyota T100 Recalls (Recent)
RepairPal Expert Overview:
Toyota is recalling 1990-1995 4Runner, 1990-1995 pickup, and 1993-1998 Toyota T100 trucks because the steering relay rod may crack under stress. This may increase the risk of a crash. Dealers will replace the steering relay rod.
1998 Toyota T100 Questions and Answers
noise coming from rear end. might be axle bearings.are the bearings preased on can job be done at home.also does the rear gear come out in one peace. i have exper. with amer. type veh not to sure a...
JUST STARED ONE DAY ON THE ROAD. WHEN YOU GET UP TO 40 IT STARTES MAKING NOISE AND VEBRATION,UP TO 60 65 ITS SLOWES DOWN A LITTLE BIT . IF YOU TURN TO THE RIGHT IT STOPES TILL YOU STRIGHT UP AND B...
I have a 98 t-100 4 wd works at times and does not at others. If the 4wd indicator light was on 4wd worked. If i shifted in and the indicator did not light 4wd did not work. I pulled the switch ...
Where do you find the brake fluid module on a 1998 t100 v6 and is there anything special I should know?
I am looking to buy a 98 t100 4x4 187k. All looks good except that when braking quickly, truck pops out of gear. Pops back in when you start back up. Owner said needs a new silenoid. I am a lit...