As i said , car will drive as long as O/D is not engaged. meaning only using its low gears. Once O/D is turned on, after a sec or to engine just starts to sputter and die.
The
engine and the automatic transmission in this vehicle are computer
controlled and in most cases when a fault occurs a fault code is
stored in the memory of the computer control module. There are
exception to this, such as the Mass Airflow Meter and fuel pressure
problems. What must be done is to have all the basic testing done
such as a scan of the system for fault codes as well as a check with
a live data scanner tool for engine functions that are not within
range of normal, a trained technician is required to know what is
correct and what isn't, then based on careful diagnostics done from
a factory repair manual the correct part is replaced or the wiring
repaired or the computer replaced (known as the PCM), which is very
rarely the problem. Other basic checks must be done as well such as
mechanical problems with the engine as well as engine state of tune
and mileage on the engine. The transmission can have mechanical
issues as well such as no gear engagement at all or a failed pump or
other pressure related problems.
SOURCE: rav4 gear problem
You need a new 5th gear- luckily this is easy to replace- I did it myself following online directions for 5th gear replacement. The 5th gear is not in the box with the other gears- its off to the side so you can access it very easily by removing the left front wheel. Just don't let the idler assembly come apart, lots of tiny parts and springs...
The 5th gear can ware out prematurely if you rest your hand on the shifter- do not rest your hand on the shifter in the future.
SOURCE: 1998 corolla sputters sometimes in first gear
sounds to me like the Maf sensor is going bad map is the
mass air flow located right after the air box
SOURCE: 1994 toyota paseo: overdrive problem
I would start with replacing your tranny fluid. black is no good. your tranny should hold about 7 qts of fluid. The tranny fluid runs through your radiator to help keep it cool. If your thermostat is stuck closed your eng coolant won't circulate and the coolant will get hotter inside your radiator. thus making your tranny fluid hotter and breaking it down. After time it will turn black from getting too hot. Let your car warm up to normal operating temperture then grab your upper radiator hose. It should be very warm. If not your thermostat is stuck closed.
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