Question about 2002 Toyota RAV4
I SERVICED THE TRANS A FEW THOUSAND MILES AGO AND EVERYTHING SEEMED FINE.ORIGINAL OWNER,VEHICLE HAS 245,000 MILES.
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Posted on Jan 02, 2017
SOURCE: Hello, I own a 93
The transmission is controlled by the Transmission Control Unit (TCU).
Throttle position, rpm, and speed are input parameters to the TCU. The TCU has a default set of shift patterns. These shift patterns change over time based on your specific vehicle setup and driving habbits.
The shift patterns are only slightly affected by driving habbits over many driving cycles. But, changing the relationship between the throttle position and the actual speed being reported by the speed sensor can have an immediate effect on shift patterns.
While your speedo may now be correct, the realtionship between rpm and thottle position has not been corrected. That would take a gear change in the differentials.
The TCU can be reset to an inital learn base line. When this is done, the TCU will instantly learn the dynamics of your setup.
Any shop with an advanced ODB scan tool can reset the the TCU. The dealer or a transmission shop would be preferable.
You really should change your differential gears as opposed to resetting the TCU
This information was posted by ftgiles here
Posted on Jan 06, 2009
replace the O2 sensor for cylinder bank #2, that is the sensor before the catalytic converter, bank 2 is the back across from the bank that # 1 cylinder is in, disconnect the battery for 5 minutes and see if that clears the problem. see photo of engine banks
Posted on Apr 07, 2009
SOURCE: Engine oil pressure problem
I would start with dropping the oil pan to check pick-up tube to oil pump could be cloge.Good luck.
Posted on Nov 30, 2009
Testimonial: "Good suggestion -- will try it & report back."
Before you start looking at replacing solenoids, here is something that you need to know:
Toyota has a technical service bulletin regarding this issue.
Changing the solenoids will NOT rectify your situation. Replacing the ECU in the car is what you need to do. The logic/programming is the problem, not the solenoids.
The good news is this: The ECU is covered, under the factory warranty! It will be replaced for free, if your car has less than 80,000 miles on it.
If you have more miles than 80K, call the Toyota Customer Experience Center at 800-331-4331; an analyst may be able to help offset your costs; they do this quite frequently.
This should get you fixed up. Thanks for visiting FixYa!
Posted on Dec 08, 2009
Usually burnt and discolored ATF mean pump or torque converter not doing there job or bands and clutches are worn. Shift solinoid or a pressure problem is the problem with 2nd and 3rd gear, Take it to a transmission shop and have them look it over but like I said earlierdiscolored ATF could mean a rebuild.
Posted on Mar 28, 2010
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