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If it is an automatic transmission going uphill it will downshift to a lower gear for more torque.
If your transmission is manual, you will have to change gear. If it is automatic, you won't.
see if the transmission is downshifting properly
Our Kia has an automatic transmission, on the side of the shift lever there is a button. when going uphill you can push this button and it keeps the transmission from shifting out. When this is engaged hold appears on the instrument panel. Hope this helps.
Means that the transmission is delaying going into the next gear.
You need to downshift to reduce load and drag on the transmission. Ideally, you should downshift before or as soon as you hear the engine being put under a strain. Continuing to drive uphill without downshifting puts undue stress on the engine and slows the vehicle down under the load.An automatic transmission downshifts "automatically" (which is why it is called an automatic transmission).Note: Going downhill driving a manual stick, you don't want to let your speed get too high. You can downshift on dangerous hills or hills with curves to keep your descent within the speed limit.
Automatic transmissions lose acceleration driving uphill because of the torque converter. The engine turns one side of the torque converter and the other side is splined into the input set of the planetary gears. The torque converter uses fluid to turn the input shaft in the transmission. When the transmission is locked into gear and going uphill the torque converter has to work against power losses from the tires on the road and when the engine is working harder the torque converter cuts or "shears" the fluid and it causes the transmission to overheat. Always make sure you have enough fluid in the transmission
A drop in speed while going uphill is normal for most vehicles. If the speed is more than 20 mph slower than when first ascending the hill, there could still be a problem with the transmission or an oxygen sensor.
the automatic transmission don't need the fluid to be changed never if you change the fluid with a new one you going to lost your transmission
The automatic transmission temperature sensor, on your 1990 Mitsubishi, is located on the top of the transmission. The sensor will have to electrical wires going to it.
because the transmission is going out, it need rebuilt or replaced
727 automatic.