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It is possible that the computer is the culprit. Most cars with computer controlled trannys will keep in 3rd gear and only shift to overdrive when the engine has warmed up sufficiently. It could be a problem with this system. The best place to take it is your local AAMCO or Mr. Transmission, or the dealer. A regular garage will just be guessing in some cases unless the problem is revealed after running the engine codes.
4th gear failure is a common problem with this transmission, assuming it is an automatic. You should have the vehicle checked for codes by a qualified repair center with the proper scan tool. Also, check fluid level and condition. More often than not, the trans loses 3rd and 4th gear, as these are working off the same set of clutches. 3-4 clutches apply in 3rd, and when the 4th shift is made the 2-4 band applies giving you overdrive. If you have no engine braking in manual 3rd, you definitely have a mechanical failure, no 4th could be an electrical, or mechanical fault.
The fluild is suspect as is the compiter controls. Is the check engine lite on ? A bad TPS or air flow meter even if still working can command out of lock up. The fluild is at the right level and is halfway clean? The trans overheating now or in the past can have runied the lockup solinoid or the lock up clutch in the converter. Tranny shops like to rebuild the whole tranny every car as they know thats going to get it and they make more money and have less headaces with broken cars and mad customers. I f the control system cks OK Have your best guess local trusted tranny shop test drive the car and then listen to him say what hes going to do to fix it what hes going to charge and what'll happen if you don't fix it and drive around it. He may say he'll change just the touque converter and cross your fingers that it doesnt **** out too soon
hELLO SUPRA I HAD A 92 ACCORD EXACTLY THE SAME THERE IS A FUSE UNDER THE HOOD (PASSENGERSIDE) THAT WILL FIX THE PROBLEM BUT LOOSE THE AUTO SEATBELTS BUT IT WILL SHIFT PROPERLY . OTHEWISE IT IS A TCM PROBLEM . IF THAT DOESNT WORK EMAIL ME AT MRJLEE1980@YAHOO.COM
I have a s40 1.9d / 2000 plate,
In the last month or so the car loses revs when changing up to 3rd and 4th gear, I can only get 50 mph max in 3rd gear 80mp in 4th.
The car has just clocked 185,000 miles
Its a great car but a pai at the moment, I've had a service including fuel fillter change added fuel cleaners to the deilsel all to no avail
first of all you need to fix the motor mounts drive shaft hangers and the lower control arm bushings and if you still have a transmission problem . it is in the valve body in the transmission you need to bring it to a good transmission shopas this will be a major tranny overhaul
There are to many things that can cause this problem, best thing to is go get the ECM scanned for DTC codes at a transmission shop or Auto zone or Parts Source since they scan for free.
The ECM should have DTC code in it's memory on how the transmission is Performing and have the Transmission line tested for Fluid pressure.
Good luck and hope this helps. Oh and also ways check with more then on transmission shop if there tell you that you need a new Transmission,
It could be a simple as the transmission filter falling off causing the lost of transmission fluid pressure. Check the transmission fluid too.