When climbing a steep incline. The automatic transmission will always try to engage a high gear.
Downshift when going up hills or when you want to slow down
Look at getting a new transmission
If the pcm controls the transmission the shifts could be inaccurate.
Once the computer tells the transmission to downshift the car should in theory downshift just as quickly as it upshifts.
Downshift when going up hills or when you want to slow down
The purpose of the automatic transmission is that is shifts for you. You'll want to lock your transmission into your ideal gear for going up and down steep inclines to prevent it from downshifting, but, other than that, you typically let the computer do the shifting for you.
If it's an automatic, you may have a sticking solenoid INSIDE the transmission.
With a manual transmission you downshift to slow down in situations where in an automatic you would have to use the brakes. Using brakes more = brakes wearing faster.
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.
Gravity does that. Better cruise control systems will downshift an automatic transmission to hold the vehicle back.
A 4l60e transmission uses a series of bands and hydraulic pressure to downshift. This changes the gearing ratio inside of the transmission which is then output to the drive shaft and wheels.
If it is an automatic transmission going uphill it will downshift to a lower gear for more torque.