What qould cause a 2000 isuzu rodeo to shift hard inless u manual shift it we jave replaced transmission speed sensor lus number 4 coil pack

possible dirty transmission oil
could be a problem wire to the servo/solenoid

what isuzu is this, model car or truck
no model stated. (wild guess RODEO)
no year stated, 1991 to 2001 used.
no engine size state or of gas(petrol) or diesel
zero input just 4l30e box, lots of those
so Ill daftly guess.car
it's a car a ,(see list at end)
and has TCM that shifts those solenoids.
check fuses yet?
scan it yet, scan it to see all those TCM errors yet?DTC P07xx errors>
seems not.
why change the solenoids.??? hard work for a guess.


symptoms, decoded
hash shifting.
only when it downs shifts, but all lower gears?
or 3>2 only.
the Tcm SHIFTs the box.
it shifts based on
speed
load
and driver demands.
this are all sensors. every one.

just like on new cars.
the TCM (brain) can go to limphome mode
and guess what?, it will shift funny,for sure.
crude as h3ll and may skip gears (and more)
that you think are harsh but in fact the skipping gear is the cause ,harsh is effects.

All modern car ,needs a scan tool to work all cars
i guess you dont know that.?

scan it
get it scanned
buy the tool.
rent it.
no car stated, so can't wax too savvy!
not at all.
is car in USA?


the book shows this.
"High Flow" Pulse Width Modulated
Solenoid (for 3-2 Downshifts Only)
id bet, limphome mode cancels this modulation...!

runs highest/newest # DEXRON fluid, (VI)
are levels at spec. not overfilled, using correct method of the BOOK.???

fits:
1998–2000 Isuzu Amigo
2002–2003 Isuzu Axiom
1999-2001 Isuzu VehiCROSS
1991–2003 Isuzu Rodeo
2001–2003 Isuzu Rodeo Sport
1990–2002 Isuzu Trooper

From the tear of the car I guess you have the 4-speed automatic. That transmission is not one of the most reliable ones...it has an internal wiring harness with relays attached to it, that are in control of what gear to select, based on input from an internal speed sensor, engine speed sensor and wheel speed sensor. There is also an issue with VW claiming that the transmission "is filled for life", which is absolute B.S. You have to change the transmission fluid and the filter at least every 60K or you will face an expensive rebuild. Have your mechanic scan the computer for fault codes related to the transmission and change the fluid and filter when the problem got fixed.

there are two vehicle speed sensors on the 2000 rodeo 4x4. One on the left side of the transmission case and one on the right side of the transfer case, the one that located on the transfer case

There's a module on side of tranny get repair manual and it will tell u were at but sends signal to tranny to shift they go bad and need replaced easy fix

Hello
The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.

Did you replace the throttle position sensor. this can cause these problems. the only thing I noticed is that it shifts hard in all gears

You need to replace the speedometer gear that drives the sensor.

Did you replace the fuel filter? It sounds like that may be the issue.

Hi, I have a trooper also, I am pretty sure if it has a speed sensor it would ;located on the transmission near the tailshaft. Not sure that will help, but mine is a standard, so I can't look for you.
or the transfer case maybe?