Question about 1992 Toyota Cressida
I apologize for the Cressida Moniker but the Crown is not listed. If I've broken a rule let me know and I will back off.
My 93 Crown has a 1JZ 2491cc fuel injected inline 6 engine and an A340E auto transmission. Factory bone stock, no modifications, Right Hand Drive, 106K miles on the odometer. At will, at a steady speed, the car will drop out of O/D. It doesn't seem to matter if I'm going 50 mph or 25 mph. It is disconcerting at times because it will cycle in and out of O/D - I turn off O/D to stop it. I'll go to the store and it won't go into O/D and then, on the way home, it works fine. Had it to the Toyota dealer garage twice and they don't find anything wrong - they DID change the fluid the first visit. After the second visit the mechanic pulled me aside and suggested I take it to a tranny shop to have the inside looked at. I'm not sure it's serious because it shifts thru the first 3 gears smoothly and when it wants to go into O/D it also does smoothly. Sometimes pressing PWR on the ECT button will get it to shift into O/D when it is fussy, but it will exhibit the same symptoms whether PWR or NORM is selected. I have never had the O/D lamp flashing during or after it's antics.
Thanks in advance for your assistance.
well it didn't hurt anything to put the new fluids in. Always good to keep up on those some of the time forgotten routine maintenance. The erratic idle could be caused by a number of things. A leaking intake manifold gasket is one but usually is a steady higher racing idle. Could be clogged injector/s, not sure if you have a throttle body which would house a single injector or a fuel rail which would house 4, one by each cylinder. The other possibilities are any of the sensors that feed the information needed to the brain/on board computer to control the air and fuel to the engine under all conditions for optimal performance, and the emission control system.
Trouble shooting comes with several options. Fortunately most vehicles since the start of the electronic fuel injection systems, that would be everything since the end of the carburetor, comes with some description of an on board diagnostic system for trouble shooting the sensors and such.You can purchase a diagnostic tool, and you will need to purchase a Haynes or Chiltons Manual for your year make and model which will tell you what all of the different codes mean. You can find these at any of the auto part chains such as Auto Zone, Discount Auto Parts, Pep Boys etc. Most of these stores will test your on board diagnostics with their tool free of charge. The Manual never hurts to have in your possession as it covers mostly everything from A to Z for mechanical and electrical repair and troubleshooting. Some vehicles have a way of giving you error msg's by a series of turning the ignition key on and off a certain number of times, and giving a code by a series of an in dash light blinking and pausing, this would also be covered in the manual for your make and model.
Hope this helps,
Posted on Nov 25, 2008
Sounds like you need the updated engine computer for harsh shifting. Look up under the glove box at the computer. Number should be 89661-02K21 if not, you need the update. It is an 8/80 warranty item.
Posted on Dec 31, 2008
MMMMMMM sounds like you lost a sincro in the tranny. Is the fluid over filled? I really recommend lucas tranny solution it works wonders. hope you find your way.
Posted on Feb 03, 2009
check you ignition components to see if they are worn or faulty, this is usually the cheapest part that can cause this problem since your tach runs off the ignition.check fuel filter before fuel pump as this could be clogged and also not as expensive as a pump or oxy sensor. a faulty oxy sensor will set a code.
Posted on Feb 06, 2009
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