Seems like when my check engine light comes on my tranny starts too studder back an forth in first an 2nd gear only going about 10 to 15 mph when check engine light is off it seems to be fine

It could be a loose/failed engine or transmission mount. Look at the tranny rear mount and check the bolts and condition. Also check the bell housing bolts AND the bolts connecting the engine flywheel to the clutch pressure plate.

look at fluid levels and color of fluid.. if brown instead of reddish take to transmission service and do fluid and filter change..may have a clogged filter..

tune the engine...bad jgnition parts can cause the trans to shift improprerly...my 4 cyl. camry was not going into 1st gear or studdering on first.. corrected with tune-up and cleaned egr valve.. found a lot of carbon in intake manifold.. also replaced canister purge from tank to intake...still need to correct carbon ...but car shifts perfectly.!!!

I have a 2007 Dodge Charger won't go over 35-40 mph and once you get up to that speed it jumps back and forth and when you start it and put it in gear to go it jumps real hard. My mechanic and a transmission specialist said it was a bad tranny I bought a used tranny and the used one wouldn't even shift into gear so now putting another tranny and another computer system in it. Does anyone know anything else it could be I'm so tired of this vehicle

the transmittion keeps shifting in & out of gear between 45 & 50 mph it shifts to a higher gear then a lower then higher then lower till I get above 50 mph whats the problem & how to fix it

yes sounds like the one of your transmission shift solenoids is out or going out on you check them out see if can see if wires loose or if they are faulty try get a diagram see if can find out which solenoid controls 1 and 2 gear theres 4 solenoids total i believe but this is your problem

I have the same vehicle, is your engine light on or flashing? Put your key in the ignition, turn back and forth 3 cycles of on off. End in the on position. If you have a 0700 code come up, your transmission is "done". Sounds like it is in "limp mode". Thats what happened to me. Had tranny overhauled, $1800.

first things first. have you identified whether or not it is using a kick down cable? if it is, chances are this is your issue. if the colar breaks or the cable gets freyed and sticks inside the sheath, it will cause definate shift issues. let me know

Go to auto zone to check for code it is fee.

your transmission oil is likely burnt,there by losing it's viscosity. check for brown rather than red fluid on dipstick.have transmission oil & filter changed.it is possible overheating will have caused additional damage.