1991 Toyota 4Runner Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Toyota 4Runner
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1991 Toyota 4Runner ProblemsService AC system at 150,000 miles or every two to three years
Usually by 150,000 miles the AC system will need some attention, especially in climates where it is used often. Our technicians tell us that it is best to service the AC system every 2-3 years. This keeps the moisture in the system at a minimum which extends the life of the components.
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.
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 also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.
1991 Toyota 4Runner QuestionsMy Toyota will take awhile to take off after warming up for 20-30 mins what could this be? (1 answer)
If I rev the engine it will hesitate and sputter it will do it no matter what gear I'm in and happens everyday
Is it most likely a bad relay fuse, or solanoid switch.
Which holes in diagnosis
block by fuse box do i put wire ends into to check for code number. I have a 3.0
liter v6 3vze engine.
Wondering if that's true and would that then tell you it's a bad starter if it doesn't start the truck? Thank You
1991 Toyota 4Runner RecallsToyota Recalls 1990-1998 Trucks Due to Cracked Steering Relay Rod
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.