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A/t 96 vit. hot and gold engine;/trans both?
slow upshift.
the most common is this.:
TV cable to box is jammed at any point of cable or kinked.
low pump pressure in the box or filter in box pan clogged.
scanning the TCM shows errors ignored? oops
the OD lamp flashing odd , means TCM errors. so get them.
normal is the shift lever, rocker switch (?N?P?) normal or power shift mode, power shift mode delays shifts for sure. so switch it back.
internal transmission leaks can cause #2
low (super) low tranny ATF (done hot,in park and engine running never overfill any box or use the wrong ATF. ask. first or read the glove box guide (IIRC,Dexron 3 to max #). RTM manual,
if TCM sees speed error from speed sensors ,the VSS sensor at rear of tranny reads slow, the shifts will be late. speedsensors
Im assuming it is a 4 speed transmission and if you are using the "tap shift" which is for performance situations and you wouldnt typically need 4th gear. What speeds are you trying to go into 4th? If you are going too slow it wont upshot because you rpms might drop too low. Will it not go into 4th at highway speeds?
Driver Shift Control (DSC) or Electronic Range Selection (ERS): This position (M-Manual / L-Low) allows the driver to utilize the DSC/ERS system. When the shift selector lever is moved to this position, the driver may select upshifts or downshifts by using the paddle switches located on the steering wheel/shifter. An upshift is requested by pushing either + button. Refer to the vehicle owner's manual for more specific DSC/ERS information.
Driver Shift Control (DSC)/Electronic Range Selection (ERS)
Refer to the owner's manual for specific instructions on DSC. The TCM will override shift commands when maximum engine speed is achieved and will protect from any downshift which may cause excessive engine RPMs.
it can, in fact newer cars do it even more.. .saves fuel....
if fact new cars have fast 1 to 4 gear jump, (no load) MPG feature.
what is it doing and when, and under what loads?????
do you mean downshifting too soon?
OD is top gear. and TCC is torque converter lockup
down shifting happens 3 ways
1: you do it. shifter.
2: low vacuum this is the Load sense, hills cause low vacuum and it down shifts.
3: TV, this is throttle valve , sensed, you stab throttle to pass.
aka; detent, TV. passing gear.
on some cars there is an OD switch to cut out OD, say pulling trailer
pulling any heavy load, may case the OD to hunt, or the TCC to hunt
and is a real pain....
btw the FSM covers all 100 A/T issues, up shifts, down, slips. flare, early ,late. ... its complex device, tend to not own them.
Try putting the transmission in low or 1st gear manually shift it down and try taking off as you accelerate shift it manually to 2 then drive. Did it take off like it should when you put it into low and then shift up or did you feel more power when it was in low if so it sounds like the transmission is not going into low gear but taking off in maybe second gear or even drive. When it takes off in any other gear but low it will start slow and sluggish and as you begain to gain speed it will start feel normal but thats because the speed matches the gear you in at that point.If my assistance was helpful please take the time to rate my assistance thank you.
With normal acceleration the 1st to second shift point should be around 2500-3000 rpm. Most of your shifts under moderate acceleration will take place at this same point or when there a light load on the transmission. Under hard acceleration the RPMs will climp higher due to increased power needs and the computer will shift when less power is needed or the RPMs climb to an unsafe speed say5000-6000rpms (depending on where yours redlines). Also going up a steep hill will raise the RPMs higher and goind down a hill will cause a faster shift at lower RPMs. These can always be altered by an individual owner by adjusting shift points, using performance parts and if you have problems (low tranny fluid/trans issues). Your trans RPMS are fine and will vary depening on how your foot accelerates. The shift pattern should be the same every time you drive slow/medium/fast/, look for changes in those patterns you will also catch a problem early.
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